CORE GUIDES

Practical guides, tutorials & best practices

Complete knowledge base for IT professionals. Manuals, checklists, comparisons and guides — from security to AI/ML.

653

ARTICLES

Kubernetes Security Best Practices 2026

A complete guide to securing Kubernetes clusters in 2026. From supply chain security through eBPF runtime protection...

aiintermediate09. 02. 2026

Planning Algorithms for Agents

A complete guide to planning algorithms for AI agents. Learn how to implement efficient task planning and...

aiintermediate07. 02. 2026

Speculative Decoding — Faster LLMs

Speculative Decoding is a technique for accelerating large language models using a smaller draft model for token...

aiintermediate06. 02. 2026

Fine-tuning — Adapting an AI Model to Your Data

Learn how to adapt an AI model to your specific data through fine-tuning. A practical guide to techniques and...

aiintermediate27. 01. 2026

Git Branching Strategies

Comparison of Git branching strategies — Git Flow, GitHub Flow and Trunk-Based Development. Pros, cons and when to...

aiintermediate20. 01. 2026

Claude vs GPT vs Gemini

Comparison of the major LLMs — Claude (Anthropic), GPT (OpenAI), Gemini (Google).

aiintermediate18. 01. 2026

Memory for AI Agents

Discover how memory works in AI agents and LLM models. A practical guide to context storage techniques, long-term...

aiintermediate15. 01. 2026

Snowflake Schema — Normalized Dimensional Modeling

Snowflake schema normalizes dimension tables into multiple levels. Storage savings at cost of complex queries.

aiintermediate09. 01. 2026

Soda — Declarative Data Quality Monitoring with YAML

Soda is a data quality monitoring tool with YAML configuration. Soda Checks Language and alerting.

aiintermediate06. 01. 2026

rsync and Backup Strategies

Incremental backups with rsync, rotation and disaster recovery.

aiintermediate22. 12. 2025

AI Agents — Architecture and Design

A comprehensive guide to the architecture of LLM-based AI agents. Learn to design and implement intelligent systems...

aiintermediate19. 12. 2025

Supply Chain Security

Software supply chain protection. Signed commits, verified builds, SLSA.

securityintermediate17. 12. 2025

Encryption in Transit — Encrypting Data in Motion

TLS, mTLS, VPN, WireGuard. Protecting data in transit.

aiintermediate05. 12. 2025

Async Job Queues

Celery, BullMQ, background jobs. How to process tasks asynchronously.

aiintermediate04. 12. 2025

SSE for AI Streaming — Real-time LLM Responses

How to implement streaming LLM responses using Server-Sent Events. Token-by-token rendering, backpressure, error...

aiintermediate04. 12. 2025

Burp Suite Basics — Web Security Testing

How to use Burp Suite for web application testing.

aiintermediate30. 11. 2025

Compliance Frameworks — SOC 2, ISO 27001

Overview of compliance frameworks. What they require and how to prepare.

aiintermediate28. 11. 2025

Idempotency — Safe Operation Retries

Implementing idempotent APIs. Idempotency keys and database techniques.

aiintermediate28. 11. 2025

Redis Data Structures

Strings, Lists, Sets, Sorted Sets, Hashes, Streams.

aiintermediate28. 11. 2025

HTTP Security Headers — Complete Overview

Complete reference for HTTP security headers — CSP, HSTS, X-Frame-Options, and more with Nginx examples.

aiintermediate27. 11. 2025

Bulkhead Pattern — Failure Isolation

Resource isolation to prevent cascading failures. Thread pools, connection pools.

developmentintermediate27. 11. 2025

Nuxt 3 — Full-Stack Development with Vue and Nitro Engine

A complete guide to full-stack development with Nuxt 3. Server routes, API layer, Nitro engine, auto-imports and...

aiintermediate27. 11. 2025

Caching Strategies

Cache-aside, write-through, CDN, HTTP cache headers, Redis.

aiintermediate26. 11. 2025

Prompt Injection — Protecting LLMs

Prompt Injection is a serious security threat to LLM models. Learn how the attack works, its consequences and how to...

aiintermediate26. 11. 2025

How to Ace a Technical Interview

Preparing for a technical interview — coding, system design, behavioral questions.

aiintermediate25. 11. 2025

Elasticsearch Mapping

Guide to Elasticsearch mapping — defining field types, configuring analyzers, dynamic vs. explicit mapping and...

developmentintermediate24. 11. 2025

GraphQL Server Implementation

How to build a GraphQL API. Schema, resolvers, N+1 solution.

aiintermediate22. 11. 2025

Career path: junior → senior → staff

A programmer's career path — what is expected at each level.

aiintermediate21. 11. 2025

Elasticsearch Queries

Match, bool, range, aggregations and full-text search.

developmentintermediate21. 11. 2025

Infrastructure as Code Principles

Fundamental IaC principles. Why, how and best practices.

cloudintermediate20. 11. 2025

Azure Key Vault — Secrets Management

Key Vault for secrets, keys, certificates. RBAC, Managed Identity and rotation.

aiintermediate20. 11. 2025

cert-manager — Automatic TLS Certificates

Automatic Let's Encrypt certificates in Kubernetes with cert-manager.

developmentintermediate20. 11. 2025

Secrets Management — Vault, SOPS, and Secure Storage

HashiCorp Vault, Mozilla SOPS, AWS Secrets Manager.

aiintermediate19. 11. 2025

Kibana Dashboards

Building interactive dashboards in Kibana — visualizing Elasticsearch data with Discover, Lens, log analysis and alerting.

aiintermediate19. 11. 2025

N+1 Problem — Detection and Solutions

How to identify and solve the N+1 query problem. Eager loading, DataLoader.

aiintermediate19. 11. 2025

Image Signing — Cosign and Sigstore

How to sign container images. Cosign, keyless signing, verify in CI/CD.

aiintermediate18. 11. 2025

RLHF — How LLMs Learn to Be Helpful

RLHF (Reinforcement Learning from Human Feedback) is the key technique that teaches large language models to respond...

developmentintermediate18. 11. 2025

Mutation Testing — Real Quality of Your Tests

Mutation testing reveals weaknesses in tests that code coverage misses. Stryker, PIT and practical deployment for...

aiintermediate17. 11. 2025

Svelte Tutorial — Compile-Time Framework

Svelte basics. Reactivity without Virtual DOM, stores, SvelteKit.

aiintermediate17. 11. 2025

MFA Implementation — Multi-Factor Authentication

How to implement TOTP, WebAuthn/FIDO2, SMS fallback.

developmentintermediate14. 11. 2025

SvelteKit v produkci — routing, loading a deployment

A practical guide to deploying a SvelteKit application to production. Load functions, form actions, hooks, error...

aiintermediate13. 11. 2025

CrewAI Tutorial

Learn to build AI agents with the CrewAI framework. A practical guide to creating teams of autonomous agents with...

aiintermediate13. 11. 2025

API Error Handling

How to properly handle and return API errors. Error format, logging, retry.

developmentintermediate13. 11. 2025

Deno/Bun Overview — Alternatives to Node.js

Deno and Bun vs Node.js. Runtime comparison, compatibility, performance.

aiintermediate12. 11. 2025

Vector Databases — Comparison

A complete comparison of the most popular vector databases for AI applications and RAG systems. Comparing...

dataintermediate12. 11. 2025

MongoDB Aggregation Pipeline

How to query MongoDB efficiently. $match, $group, $lookup, $unwind.

aiintermediate11. 11. 2025

What Is a Neural Network — Principles and Your First Model in Python

Learn the fundamentals of neural networks and build your first model in Python. A practical beginner's guide with...

aiintermediate10. 11. 2025

Cloud Migration — 7R Strategy

Rehost, Replatform, Refactor, Repurchase, Retire, Retain, Relocate. Assessment and planning.

cloudintermediate10. 11. 2025

Network Segmentation

How to divide a network into security zones. VLANs, subnets, microsegmentation.

aiintermediate08. 11. 2025

API Design Checklist

REST API design checklist — naming, versioning, error handling, pagination.

aiintermediate08. 11. 2025

Vim and Neovim

Modes, navigation, editing, macros, and Neovim with Lua.

aiintermediate08. 11. 2025

Next.js Tutorial — Fullstack React

Server Components, App Router, API routes, SSR/SSG.

developmentintermediate07. 11. 2025

GitOps — Patterns and Anti-patterns

GitOps architectural patterns. Monorepo vs polyrepo, environment promotion, secrets management.

aiintermediate06. 11. 2025

Event-Driven Programming

Event sourcing, CQRS, message brokers. Event-driven architecture.

aiintermediate05. 11. 2025

OpenTelemetry — Unified Observability

OpenTelemetry as the standard for traces, metrics and logs. Instrumentation, Collector and backend integration.

cloudintermediate04. 11. 2025

Hybrid Cloud — On-premise and Cloud

Hybrid architecture, Azure Arc, AWS Outposts, Anthos and networking.

aiintermediate04. 11. 2025

On-call Engineering — Best Practices

Effective on-call rotations. Alert quality, escalation, compensation, and burnout prevention.

developmentintermediate04. 11. 2025

Python Typing — Type Annotations

How to use type hints in Python. Generics, Protocol, TypeVar, mypy.

aiintermediate03. 11. 2025

Prompt Engineering — Best Practices

Learn prompt engineering best practices for working with LLMs and AI agents. Tips and tricks for effective...

devopsintermediate03. 11. 2025

SRE — Four Golden Signals in Practice

Implementing the Four Golden Signals: Latency, Traffic, Errors, Saturation with PromQL queries and alerting.

aiintermediate03. 11. 2025

Log Aggregation in 10 Minutes

Centralized logging in 10 minutes with Loki + Promtail + Grafana.

aiintermediate31. 10. 2025

Azure Blob Storage — Object Storage

Blob Storage access tiers, lifecycle management, SAS tokens and immutable storage.

aiintermediate31. 10. 2025

Data Contracts — Formal Agreements on Data Quality and Structure

Data contracts define agreement between data producers and consumers. Schema, SLA and versioning.

cloudintermediate30. 10. 2025

Kubernetes Operators

Custom controllers for automating application lifecycle in Kubernetes.

dataintermediate30. 10. 2025

ETL vs ELT — When to Use Which Approach for Data Pipelines

Comparison of ETL and ELT approaches to data pipelines. When to choose extraction before transformation and when not.

aiintermediate30. 10. 2025

SSH Hardening

SSH hardening — key authentication, sshd configuration, fail2ban.

aiintermediate29. 10. 2025

Regularization — Dropout, L1/L2 and Fighting Overfitting

Learn to effectively combat overfitting with regularization techniques. Dropout, L1 and L2 regularization explained...

cloudintermediate29. 10. 2025

Helm Charts from Scratch

Kubernetes package manager. Creating, configuring and deploying Helm charts.

aiintermediate29. 10. 2025

Forensic Analysis Basics

How to perform digital forensic analysis. Evidence, memory dump, disk image.

aiintermediate28. 10. 2025

Docker Security Best Practices

Docker container security. Image scanning, rootless containers, read-only filesystem and runtime security.

infrastructureintermediate28. 10. 2025

Wireshark Basics

GUI packet analysis — display filters, TCP streams, statistics.

aiintermediate27. 10. 2025

Circuit Breaker Pattern — Protection Against Cascading Failures

Implementing the Circuit Breaker pattern for resilient microservices. States, configuration, and practical examples.

aiintermediate27. 10. 2025

SRE — Toil Reduction

Identifying and eliminating toil. Automating repetitive tasks, measurement and strategies for reduction.

aiintermediate27. 10. 2025

The Complete Guide to Python

Python from basics to advanced — syntax, OOP, async, virtual environments, best practices.

aiintermediate24. 10. 2025

Caching Strategies — Where and How to Cache

Cache-aside, write-through, write-behind and cache invalidation. A complete guide.

aiintermediate23. 10. 2025

The Complete Guide to Redis

Redis — cache, sessions, queues, pub/sub. A complete guide.

aiintermediate23. 10. 2025

Postmortem: How to Do It Right

How to write effective postmortems — blameless culture, timeline, root cause, action items.

cloudadvanced22. 10. 2025

CloudFormation vs Terraform

Comparison of AWS CloudFormation and Terraform. When to use which.

developmentintermediate22. 10. 2025

Java JVM Tuning: Cheat Sheet

JVM tuning — heap sizing, garbage collectors, JFR, diagnostic flags.

dataintermediate21. 10. 2025

ChromaDB Tutorial

Getting started with ChromaDB — an open-source vector database for Python. Installation, creating collections,...

developmentintermediate21. 10. 2025

Python Debugging — Techniques and Tools

pdb, debugpy, logging, profiling. How to debug Python effectively.

aiintermediate20. 10. 2025

SAML vs OIDC — When to Use Which Protocol

Detailed comparison of SAML and OpenID Connect. Architecture, use cases, security, mobile support and migration...

dataintermediate20. 10. 2025

The Complete Guide to PostgreSQL

PostgreSQL complete — installation, SQL, indexes, JSONB, replication, backup.

developmentintermediate17. 10. 2025

Svelte 5 Runes — New Reactive System

Svelte 5 introduces Runes — a new explicit reactive system. Learn $state, $derived, $effect and migration from...

aiintermediate17. 10. 2025

JSON/YAML: 10 Tools for Daily Work

10 tools for JSON and YAML — jq, yq, fx, gron and more.

developmentintermediate17. 10. 2025

GitHub Actions vs GitLab CI

The two most popular CI/CD platforms for modern development.

cloudintermediate16. 10. 2025

ArgoCD GitOps

GitOps deployment with ArgoCD. Automatic synchronization of K8s clusters with Git repositories.

aiintermediate16. 10. 2025

Python Testing — pytest Guide

How to test Python code. pytest, fixtures, mocking, coverage.

aiadvanced16. 10. 2025

Ansible vs Terraform

Configuration Management vs Infrastructure as Code.

aiintermediate15. 10. 2025

Optimizers — Adam, SGD and How to Choose the Right One

Comparison of Adam vs SGD optimizers for neural network training. How to choose the right optimizer based on task...

aiintermediate15. 10. 2025

VPC Networking — Peering, Transit GW, PrivateLink

VPC connectivity: peering, Transit Gateway, PrivateLink, VPN and Direct Connect.

infrastructureintermediate15. 10. 2025

Systemd — Service Management

A complete guide to systemd — service management, unit files, dependencies and troubleshooting.

developmentadvanced14. 10. 2025

React Native New Architecture — Fabric, TurboModules and JSI

React Native New Architecture brings Fabric renderer, TurboModules and JSI. Learn migration, performance benefits...

aiintermediate14. 10. 2025

Database Indexing Strategies

How to index properly. B-tree, GIN, partial, covering indexes.

dataintermediate14. 10. 2025

SQL vs NoSQL

Relational vs non-relational databases — CAP theorem and use cases.

devopsintermediate12. 10. 2025

GitLab CI Pipeline

CI/CD with GitLab CI. Stages, jobs, cache, artifacts and deployment.

aiintermediate12. 10. 2025

OWASP Top 10: Software and Data Integrity Failures

Protecting software supply chain integrity — CI/CD pipeline, auto-update, signatures.

aiintermediate10. 10. 2025

Throttling and Rate Limiting

Rate limiting implementation to protect APIs. Token bucket, sliding window and HTTP headers.

aiintermediate10. 10. 2025

2FA/MFA: Why and How to Set Up

Two-factor authentication guide — TOTP, hardware keys, backup codes.

aiintermediate09. 10. 2025

Star Schema — Dimensional Modeling for Analytical Warehouse

Star schema is foundation of dimensional modeling. Fact and dimension tables for analytical queries.

aiintermediate09. 10. 2025

Container Orchestration Patterns

Design patterns for container orchestration. Sidecar, Ambassador, Adapter, Init Container and more.

aiintermediate09. 10. 2025

How to Build a Developer Portfolio

How to create a portfolio that helps you get a job — projects, design, content.

aiintermediate08. 10. 2025

10 Bash Tricks That Will Save You Hours of Work

10 practical bash tricks — history search, brace expansion, process substitution. Save hours daily.

aiintermediate08. 10. 2025

OWASP Top 10: Identification and Authentication Failures

Secure authentication — session management, MFA, protection against credential stuffing.

aiintermediate07. 10. 2025

BuildKit — Modern Docker Build Engine

BuildKit as next-gen build engine. Parallel builds, cache mount, secret mount and multi-platform builds.

devopsintermediate05. 10. 2025

Jenkins Pipeline

Jenkins Declarative Pipeline. Stages, agents, post actions.

aiintermediate03. 10. 2025

Attention Mechanism — The Key to Modern AI

Discover the attention mechanism — the revolutionary technology that changed artificial intelligence. Understand how...

aiintermediate02. 10. 2025

AutoGen Tutorial

Learn to build intelligent agents with the AutoGen framework. A complete tutorial for working with LLM agents, their...

developmentadvanced02. 10. 2025

Zero Trust Identity — Identity-Centric Security Model

Zero Trust Identity approach to security. Continuous verification, device trust, conditional access policies and...

dataintermediate01. 10. 2025

How to Scale an Application from 0 to 1M Users

Progressive web application scaling — from a single server to a million users.

architectureintermediate30. 09. 2025

Microservices Checklist

Checklist for microservices architecture — boundaries, communication, observability.

aiintermediate30. 09. 2025

Disk Management — LVM and ZFS

Disk management — partitioning, LVM, ZFS and monitoring.

aiintermediate29. 09. 2025

Docker Security Checklist

Docker security checklist — image scanning, non-root, read-only filesystem.

aiintermediate29. 09. 2025

Flutter Platform Channels — Native Integration for iOS and Android

How to communicate with native code from Flutter via Platform Channels. Method channels, event channels, Pigeon code...

aiintermediate28. 09. 2025

Progressive Delivery

Gradual deployment. Canary, feature flags, automated rollback.

aiintermediate28. 09. 2025

Password Hashing — bcrypt, Argon2

How to properly hash passwords. Comparison of bcrypt, Argon2id, scrypt.

cloudintermediate26. 09. 2025

Multi-Cloud Strategy — When and How

Multi-cloud architecture, vendor lock-in, abstraction layers, and real trade-offs.

aiintermediate26. 09. 2025

10 Most Common Junior Developer Mistakes

10 mistakes every junior developer makes — and how to avoid them.

infrastructureintermediate26. 09. 2025

DDoS Protection — How to Defend

Types of DDoS attacks, mitigation, CDN, rate limiting, Cloudflare.

dataintermediate25. 09. 2025

Lakehouse Architecture — Merging Data Lake and Warehouse

Lakehouse combines the flexibility of a data lake with the reliability of a warehouse. Medallion architecture.

dataintermediate24. 09. 2025

Parquet, Avro, ORC — Serialization Formats for Data Engineering

Comparison of data formats Parquet, Avro, ORC and JSON. When to use which in data pipeline.

developmentintermediate23. 09. 2025

React Native Performance — Optimization for 60 FPS

How to achieve 60 FPS in React Native applications. FlashList, memo optimizations, Reanimated, bridge overhead, and...

securityintermediate23. 09. 2025

Nmap Tutorial — Network Scanning

A complete guide to Nmap. Port scanning, service detection, scripting engine.

aiintermediate22. 09. 2025

OWASP Top 10: Security Logging and Monitoring Failures

How to properly log security events and detect attacks.

aiintermediate19. 09. 2025

Chain-of-Thought Prompting

Discover Chain-of-Thought prompting — a technique that teaches AI models to solve complex problems step by step....

infrastructureintermediate19. 09. 2025

Load Balancing Algorithms

Round Robin, Least Connections, Consistent Hashing a konfigurace v Nginx.

aiintermediate17. 09. 2025

Database Migrations

How to manage database schema. Alembic, Flyway, Prisma migrations.

aiintermediate17. 09. 2025

gRPC Service in Go

How to build a gRPC service in Go. Protobuf, streaming, interceptors.

dataintermediate17. 09. 2025

MongoDB vs PostgreSQL

Document vs relational database — when to choose which.

cloudintermediate16. 09. 2025

Kubernetes — Stateful Workloads in Practice

Running stateful applications on Kubernetes. Databases, message brokers, storage classes and data persistence.

cloudintermediate16. 09. 2025

Traefik Tutorial

Service auto-discovery, Docker/K8s integration, Let's Encrypt.

aiintermediate15. 09. 2025

Error Budget

Error budget concept in SRE. Balancing reliability and speed.

developmentintermediate15. 09. 2025

pip vs poetry vs uv — Python Dependency Management

Comparison of Python package managers. When to use which.

cloudintermediate14. 09. 2025

Network Policies in Kubernetes

How to isolate pods in Kubernetes. Ingress, egress rules.

aiintermediate12. 09. 2025

Docker Multi-stage Builds

Optimizing Docker images with multi-stage builds. Smaller images, faster deploys, more secure containers.

cloudintermediate11. 09. 2025

Azure AKS — Managed Kubernetes

Azure Kubernetes Service. Node pools, Azure CNI, Workload Identity and monitoring.

aiintermediate11. 09. 2025

How to Build a Home Lab

A guide to building a home lab — hardware, OS, services, networking.

aiintermediate10. 09. 2025

Chunking Strategies for RAG

Discover effective chunking strategies for RAG systems. Learn to optimally split text for better retrieval and...

cloudintermediate10. 09. 2025

Flux CD Tutorial

GitOps with Flux. Automatic synchronization, image automation and Helm releases.

aiintermediate10. 09. 2025

WebSocket vs SSE vs Long Polling

Real-time communication technologies — comparison.

dataintermediate07. 09. 2025

The Complete Guide to Elasticsearch

Elasticsearch — full-text search, agregace, logging, monitoring.

cloudintermediate05. 09. 2025

CI/CD for Kubernetes — Pipeline Design

Build, test, scan, push, deploy. GitHub Actions + ArgoCD.

aiintermediate05. 09. 2025

Password Manager: A Complete Guide

Why and how to use a password manager — Bitwarden, 1Password, KeePass.

aiintermediate05. 09. 2025

DNS — How Domain Name Resolution Works

Complete DNS explanation — hierarchy, record types, resolving, and DNSSEC.

aiintermediate04. 09. 2025

Chaos Engineering — Advanced Techniques

Advanced chaos engineering experiments. Litmus, Chaos Mesh, steady state hypothesis and blast radius.

aiintermediate04. 09. 2025

VPN Overview — WireGuard, OpenVPN, Tailscale

WireGuard for performance, OpenVPN for compatibility, Tailscale for simplicity.

observabilityintermediate04. 09. 2025

How to Deploy OpenTelemetry in Kubernetes

Step-by-step guide to deploying OpenTelemetry Collector in a Kubernetes cluster with export to the Grafana stack.

aiintermediate03. 09. 2025

SOLID Principles in Practice

5 OOP design principles with practical examples in Python.

aiintermediate02. 09. 2025

New project setup checklist

Checklist pro setup newho projektu — repo, CI/CD, monitoring, documentation.

cloudintermediate01. 09. 2025

Cloud Disaster Recovery — Strategies

DR strategies, RTO/RPO, multi-region setup and testing.

cloudintermediate01. 09. 2025

Kubernetes Monitoring Stack

Complete monitoring for Kubernetes. Prometheus, Grafana, alerting.

cloudintermediate30. 08. 2025

Google GKE — Managed Kubernetes

GKE Autopilot vs Standard, Workload Identity, Config Connector and Gateway API.

developmentintermediate29. 08. 2025

The Complete Guide to CI/CD

CI/CD od teorie po praxi — continuous integration, delivery, deployment.

aiintermediate29. 08. 2025

OWASP Top 10: Broken Access Control

A practical guide to the most common web vulnerability — Broken Access Control. Examples, prevention and code.

aiintermediate29. 08. 2025

Playwright — A Complete Guide to E2E Testing

A complete guide to E2E testing with Playwright. Auto-waiting, locators, fixtures, parallel execution, visual...

aiintermediate27. 08. 2025

InfluxDB — Time Series

Introduction to InfluxDB — a time series database for metrics, IoT and monitoring. Installation, writing data, Flux...

infrastructureintermediate27. 08. 2025

Certbot and SSL Certificates

Free automated SSL certificates with Let's Encrypt and Certbot — installation, renewal, and Nginx configuration.

aiintermediate26. 08. 2025

Cloud Migration Checklist

Cloud migration checklist — assessment, planning, migration, optimization.

cloudintermediate26. 08. 2025

Docker Tutorial from Scratch

Complete introduction to Docker. Containers, images, volumes, and first deployment.

aiintermediate26. 08. 2025

Audit Logging — What, How, and Why to Log

Security audit logs. What to log, format, retention, compliance.

aiintermediate25. 08. 2025

Data Lake — Architecture for Storing Raw Data

Data lake is central repository for raw data in all formats. Architecture and best practices.

aiintermediate25. 08. 2025

SRE — Game Days

Simulated incidents for testing team readiness. Planning, scenarios and lessons learned.

developmentintermediate25. 08. 2025

React vs Vue vs Svelte

Three major frontend frameworks — approach, performance, and ecosystem.

cloudintermediate22. 08. 2025

Kubernetes Security — Hardening

Pod Security Standards, network policies, image scanning a RBAC.

dataintermediate22. 08. 2025

Spark Structured Streaming — Unified Batch and Stream Processing

Spark Structured Streaming combines batch and stream in one API. Micro-batch and Delta Lake integration.

aibeginner21. 08. 2025

OpenID Connect (OIDC) — Complete Authentication Guide

Complete guide to the OpenID Connect protocol. Authorization Code Flow, PKCE, ID tokens, claims, discovery endpoint...

securityintermediate21. 08. 2025

Linkerd — Lightweight Service Mesh

Linkerd architektura, zero-config mTLS, traffic split a observabilita.

dataintermediate21. 08. 2025

Batch Processing

How to efficiently process large data volumes. Chunks, streaming, parallel.

devopsintermediate20. 08. 2025

Tekton — Cloud-Native CI/CD Pipelines

Tekton as a Kubernetes-native CI/CD framework. Tasks, Pipelines, Triggers and ecosystem integration.

cloudintermediate19. 08. 2025

GCP Cloud Run

Serverless containers on Google Cloud Run. Deploy, autoscaling and configuration.

aiintermediate19. 08. 2025

Free vs Paid Tools for Developers

Overview of free and paid tools for developers — when it pays to pay.

securityintermediate19. 08. 2025

Network Troubleshooting

Systematic approach to diagnosing network problems.

aiintermediate18. 08. 2025

The Complete Guide to Git

A complete guide to Git from basics to advanced techniques — branches, merge, rebase, hooks.

aiintermediate17. 08. 2025

strace and ltrace — debugging

Tracing system calls and library calls with strace and ltrace — debugging performance issues and errors on Linux.

devopsintermediate15. 08. 2025

Loki + Grafana — Centralized Logs

Lightweight log agregace s Loki a vizualizace v Grafana.

aiintermediate15. 08. 2025

Medallion Architecture — Bronze, Silver, Gold Data Layers

Medallion architecture organizes data into three quality layers. Bronze (raw), Silver (clean), Gold (business).

securityintermediate15. 08. 2025

Let's Encrypt Tutorial — Automatic HTTPS Certificates

Setting up Let's Encrypt with certbot. Automatic renewal, wildcard certificates.

aiintermediate14. 08. 2025

Production deployment checklist

Complete production deployment checklist — before, during, and after deployment.

aiintermediate14. 08. 2025

Linux Filesystem Hierarchy

A guide to the Linux directory structure — FHS standard.

aiintermediate14. 08. 2025

Firewall Rules — Best Practices

How to properly configure a firewall. iptables, nftables, cloud security groups.

dataintermediate13. 08. 2025

System Design Interview: Preparation

How to prepare for a system design interview — framework, examples, resources.

cloudintermediate13. 08. 2025

Podman vs Docker

Podman — daemonless, rootless alternative to Docker.

dataintermediate13. 08. 2025

Looker — BI Platform with LookML Modeling Layer

Google's Looker with LookML layer. Central metric definitions and governance.

aiintermediate12. 08. 2025

Delta Lake — ACID Transactions for Data Lake

Delta Lake adds ACID transactions, schema enforcement and time travel over Parquet files.

dataintermediate12. 08. 2025

OWASP Top 10: Injection

SQL injection, NoSQL injection, OS command injection — how they work and how to defend against them.

aiintermediate11. 08. 2025

A/B Testing Backend

Server-side A/B testing. Assignment, tracking, statistical significance.

infrastructureintermediate11. 08. 2025

Nginx vs Caddy

Nginx — performance and flexibility. Caddy — automatic HTTPS.

aiintermediate10. 08. 2025

Jaeger — Distributed Tracing System

Jaeger for distributed tracing. Architecture, deployment, sampling strategies and latency analysis.

aiintermediate08. 08. 2025

Data Governance — Managing Data Assets in Organization

Complete guide to data governance. Policies, roles, data classification and lineage.

aiintermediate08. 08. 2025

Great Expectations — Automated Data Quality Validation

Great Expectations is a Python framework for data validation. Expectations, suites and pipeline integration.

securityintermediate07. 08. 2025

The Complete Guide to Nginx

Nginx as web server, reverse proxy, load balancer. Complete configuration.

aiintermediate07. 08. 2025

jq — JSON Processing on the Command Line

A complete guide to jq for filtering, transforming and analysing JSON data.

aiintermediate06. 08. 2025

How to Write a Good README

How to write a README that convinces people to use your project.

aiintermediate05. 08. 2025

Design Patterns Overview (GoF)

Most important design patterns. Factory, Observer, Strategy, Singleton.

dataintermediate04. 08. 2025

Read Replicas — Scaling Reads

Scaling databases with read replicas. Master-slave replication and routing.

aiintermediate03. 08. 2025

Passkeys in Enterprise — Migration from Passwords and MFA

Strategy for deploying passkeys in enterprise environments. Migration from passwords, coexistence with MFA, device...

developmentintermediate03. 08. 2025

Redis Clustering

Guide to Redis Cluster — horizontal scaling via hash slots, automatic failover, adding nodes and production configuration.

aiintermediate02. 08. 2025

Firewalld vs nftables

Modern Linux firewall with nftables and firewalld — rules, zones, NAT, and practical configuration examples.

aiintermediate31. 07. 2025

SLO, SLI and Error Budgets — Deep Dive

A practical guide to implementing SLOs and SLIs. Metric selection, error budget calculation, alerting and burn rate.

aiintermediate29. 07. 2025

Tailscale Tutorial

Painless mesh VPN — installation, subnet routing, exit nodes, ACL.

developmentintermediate29. 07. 2025

Spring Boot 3 Tutorial

Modern Java backend. REST API, JPA, Security, native image.

aiintermediate29. 07. 2025

Contract Testing with Pact — Reliable Microservices Integration

Contract testing with the Pact framework. Consumer-driven contracts, provider verification, Pact Broker, and...

cloudintermediate27. 07. 2025

Crossplane — Kubernetes-Native IaC

Crossplane compositions, claims, XRDs and GitOps workflow.

aiintermediate25. 07. 2025

Incident Management — A Complete Guide

Incident management process from detection to resolution. Severity levels, roles, communication and escalation.

aiintermediate25. 07. 2025

htop, btop, glances — Monitoring

Interactive system resource monitoring on Linux — comparing htop, btop, and glances with tips for effective use.

aiintermediate23. 07. 2025

Apache Superset — Enterprise Open-Source BI Platform

Apache Superset is an open-source BI by Airbnb. SQL Lab, 40+ visualizations and enterprise security.

architectureintermediate23. 07. 2025

Distributed Transactions — Overview

How to handle transactions across microservices. 2PC, Saga, Outbox pattern, and TCC.

aiintermediate22. 07. 2025

ChromaDB vs Pinecone

Open-source embedded vs managed serverless vector DB.

architectureintermediate21. 07. 2025

Ambassador Pattern — Proxy for External Services

Ambassador as a proxy between your application and external services. Retry, circuit breaking, monitoring.

aiintermediate21. 07. 2025

Disaster Recovery Checklist

Disaster recovery checklist — RTO/RPO, failover, communication, testing.

cloudintermediate21. 07. 2025

StatefulSets for Databases

StatefulSets for stateful applications in Kubernetes. Ordered deployment, stable network identity.

aiintermediate18. 07. 2025

WebSocket at Scale — Horizontal Scaling and Session Management

How to scale WebSocket connections to millions of users. Redis Pub/Sub, sticky sessions, connection pooling and...

aiintermediate18. 07. 2025

Data Partitioning Strategies for Optimal Query Performance

Data partitioning is key for performance. Time-based, hash and range partitioning in data lake and warehouse.

devopsintermediate17. 07. 2025

Data Observability — Monitoring Data Pipeline Health

Data observability monitors freshness, volume, schema and data quality. Monte Carlo, Elementary and custom solutions.

aiintermediate17. 07. 2025

Rust Ownership System

Ownership, borrowing, lifetimes. How Rust guarantees memory safety without GC.

aiintermediate16. 07. 2025

AI Project Checklist

Checklist for AI/ML projects — data, model, deployment, monitoring, ethics.

cloudintermediate15. 07. 2025

Multi-stage Docker Builds

Optimizing Docker images with multi-stage builds. Smaller images, more secure production.

aiintermediate15. 07. 2025

On-Call Best Practices

Effective on-call. Alerting, runbooks, sustainability.

aiadvanced14. 07. 2025

Hexagonal Architecture — Ports and Adapters

Separating business logic from infrastructure. Ports, adapters, and testable code.

developmentintermediate13. 07. 2025

GraphQL vs REST — Decision Guide

Comparing GraphQL and REST API. Over-fetching, performance, tooling, and decision criteria.

aiintermediate11. 07. 2025

The Complete Guide to REST API

REST API design a implementace — principy, CRUD, autentizace, versioning, best practices.

aiintermediate10. 07. 2025

Apache Airflow — Data Pipeline Orchestration in Practice

A complete guide to Apache Airflow. DAGs, operators, scheduling and best practices for production deployment.

developmentintermediate08. 07. 2025

CSS :has() Selector — Most Powerful CSS Feature of the Decade

A practical guide to the CSS :has() selector. Learn parent selection, conditional styling and advanced patterns...

developmentintermediate08. 07. 2025

React Server Components — A Complete Guide

A complete guide to React Server Components (RSC). Learn the difference between server and client components,...

aiintermediate07. 07. 2025

Few-shot vs Zero-shot Learning

Understand the difference between few-shot and zero-shot learning in AI. Practical examples of both approaches in...

aiintermediate07. 07. 2025

Accessibility Checklist

Web accessibility checklist (WCAG 2.1) — navigation, colors, forms, screen readers.

aiintermediate07. 07. 2025

Chaos Engineering Basics

Introduction to chaos engineering. Principles, experiments, tools.

dataintermediate05. 07. 2025

ClickHouse — Columnar Database for Lightning-Fast Analytical Queries

ClickHouse is an open-source columnar OLAP database. MergeTree engine and materialized views.

cloudintermediate04. 07. 2025

Kubernetes RBAC

Role-Based Access Control v Kubernetes. Roles, ClusterRoles, bindings a service accounts.

aiintermediate04. 07. 2025

Cypress vs Playwright — Detailed E2E Framework Comparison

Cypress vs Playwright in 2025. Architecture, speed, debugging, cross-browser support, and decision criteria for your project.

aiintermediate02. 07. 2025

Server-Sent Events (SSE) — One-Way Real-Time Stream

Server-Sent Events as a simpler alternative to WebSockets. Implementation, reconnection, event types and comparison...

aiintermediate02. 07. 2025

Postmortem Template

Effective postmortem. Template and blameless culture.

aiintermediate02. 07. 2025

REST API Design Best Practices

How to design REST APIs. URL conventions, HTTP methods, status codes, HATEOAS.

aiintermediate01. 07. 2025

Sidecar Pattern — Extension Without Code Changes

Sidecar container for cross-cutting concerns. Logging, monitoring, service mesh.

cloudintermediate01. 07. 2025

AWS CloudFront — CDN and Edge Computing

CloudFront distributions, cache policies, Lambda@Edge, CloudFront Functions and origin failover.

developmentintermediate01. 07. 2025

Pinia — Advanced State Management for Vue 3

Advanced patterns with Pinia — plugins, composition stores, SSR hydration, persistence, and store testing in...

aiintermediate28. 06. 2025

GitOps Principles

Git as the single source of truth for infrastructure — declarative config, reconciliation, and automation.

cloudintermediate27. 06. 2025

Kaniko — Docker Build without Docker

Kaniko enables building Docker images in Kubernetes without Docker daemon. Secure CI/CD in containers.

developmentintermediate26. 06. 2025

GitHub Actions from Scratch

CI/CD with GitHub Actions. Workflows, jobs, steps and first pipeline.

aiintermediate25. 06. 2025

SRE — Runbooks and Operational Documentation

Effective runbooks for incident response. Structure, automation and operational documentation maintenance.

aiintermediate24. 06. 2025

Multi-tenancy — Multiple Customers in a Single Application

Architectural approaches to multi-tenancy. Shared DB, schema per tenant, DB per tenant.

aiintermediate24. 06. 2025

Mac Terminal: 20 Tricks for Power Users

20 tricks for Mac terminal — pbcopy, caffeinate, mdfind, defaults and more.

aiintermediate23. 06. 2025

Message Queue Patterns

Design patterns for message queues. Work queues, dead letter queues and examples with RabbitMQ.

securityadvanced23. 06. 2025

Service Mesh Explained

Sidecar proxy, traffic management, observability, and security.

aibeginner23. 06. 2025

Go for Beginners

Go basics. Structs, interfaces, error handling, goroutines.

aiintermediate21. 06. 2025

Linux: 10 Commands That Save the Day

10 Linux commands for emergency situations — full disk, zombie processes, network debugging.

aiintermediate21. 06. 2025

Async/Await in Python

Asynchronous programming in Python. asyncio, aiohttp, practical examples.

aiintermediate20. 06. 2025

tmux and screen

Session management, split panes, surviving SSH disconnections.

aiintermediate20. 06. 2025

Rate Limiting Algorithms

Overview of rate limiting algorithms — Token Bucket, Leaky Bucket, Fixed and Sliding Window for API protection.

aiintermediate19. 06. 2025

Function Calling Tutorial

Learn to use Function Calling in LLM models and agents. A complete tutorial with practical examples and...

architectureintermediate19. 06. 2025

Materialized Views — Precomputed Query Results

Materialized views for read performance. PostgreSQL and event-driven updates.

aiintermediate19. 06. 2025

TCP vs UDP Deep Dive

Reliability vs speed — when to use which protocol.

aiintermediate18. 06. 2025

RAG Architecture from Scratch

A complete guide to RAG architecture — from basic principles to practical implementation. Learn to build intelligent...

cloudintermediate17. 06. 2025

Serverless Framework

Multi-cloud serverless deployment. Lambda, Azure Functions, Cloud Functions with a single tool.

aiintermediate16. 06. 2025

AWS EC2 — Complete Guide

Elastic Compute Cloud on AWS. Instance types, AMI, Auto Scaling, Spot and Reserved instances.

cloudintermediate13. 06. 2025

Kubernetes Multi-tenancy

Tenant isolation in Kubernetes. Namespace isolation, Network Policies, OPA Gatekeeper and virtual clusters.

cloudintermediate12. 06. 2025

Kubernetes Services and Networking

ClusterIP, NodePort, LoadBalancer and the Kubernetes networking model.

aiintermediate11. 06. 2025

Mixture of Experts — Efficient Scaling

Mixture of Experts (MoE) is an advanced neural network architecture that enables efficient scaling of AI models. It...

aiintermediate11. 06. 2025

Kubernetes: 20 kubectl Commands for Daily Work

20 kubectl commands for everyday Kubernetes work. From basics to debugging.

aiintermediate11. 06. 2025

Chaos Engineering in Practice — From Theory to Implementation

A practical guide to chaos engineering. Steady state hypothesis, blast radius, game days, Litmus Chaos and...

dataintermediate10. 06. 2025

Docker Compose for Development

Local development with docker-compose. Multi-container setup, volumes and networking.

cloudintermediate10. 06. 2025

Kubernetes Deployment Strategies

RollingUpdate, Recreate, Blue-Green a Canary v Kubernetes.

developmentintermediate09. 06. 2025

Docker Multi-Stage Builds

Optimizing images with multi-stage builds — smaller and more secure.

infrastructureintermediate07. 06. 2025

Load Balancing — L4 vs L7

Difference between L4 and L7, algorithms, and when to use which.

developmentintermediate06. 06. 2025

Express.js Tutorial — Node.js Web Framework

How to build an API with Express.js. Routing, middleware, error handling.

cloudintermediate05. 06. 2025

Serverless: When It Makes Sense

Serverless pros and cons — Lambda, Functions, when to use and when not.

aiintermediate04. 06. 2025

C# .NET 8 New Features

Latest C# features. Primary constructors, collection expressions, AOT.

aiintermediate03. 06. 2025

MCP — Model Context Protocol

Model Context Protocol (MCP) enables AI agents to securely access external data and services. Learn how MCP is...

devopsintermediate02. 06. 2025

Cloud Observability — Metrics, Logs, Traces

Three pillars of observability: Prometheus, Loki, Jaeger, and OpenTelemetry.

dataintermediate02. 06. 2025

Trino — Distributed SQL Engine for Federated Queries

Trino is a distributed SQL engine for querying heterogeneous sources without moving data.

aiintermediate01. 06. 2025

Embedding Models — Production Comparison

Comparison of embedding models for production deployment — performance, speed, cost and quality of text vector...

aiintermediate28. 05. 2025

OpenTelemetry Collector — Advanced Configuration

Advanced OTel Collector deployment. Tail sampling, processors, connectors and deployment patterns.

aiintermediate27. 05. 2025

Docker Compose Advanced Techniques

Advanced Compose — profiles, health checks, secrets, resources.

aiintermediate26. 05. 2025

The Complete Guide to Ollama + Local AI

Ollama — local AI models, installation, API, models, integration.

developmentintermediate25. 05. 2025

Docker Compose: 10 Advanced Techniques

Advanced Docker Compose — profiles, extends, health checks, networking.

developmentintermediate25. 05. 2025

CDN — How It Works

How CDN works, when to deploy, and how to configure caching.

cloudintermediate24. 05. 2025

Kustomize — K8s Configuration without Templates

Kustomize pro overlay-based Kubernetes konfigurace. Base, overlays a patches.

developmentintermediate24. 05. 2025

Chrome DevTools: 20 Hidden Features

20 hidden Chrome DevTools features — copy as fetch, CSS overview, performance.

aiintermediate23. 05. 2025

API Versioning Strategies — URL, Header or Content Negotiation?

A complete guide to API versioning strategies. URL versioning, header versioning, content negotiation, sunset...

aiintermediate22. 05. 2025

Data Mesh — Decentralized Data Architecture

Data mesh is architectural approach based on domain ownership and data products.

aiintermediate19. 05. 2025

JWT Best Practices — JSON Web Tokens Done Right

Secure use of JWT. Signatures, expiration, refresh tokens, common mistakes.

devopsintermediate17. 05. 2025

Distributed Tracing — Patterns and Best Practices

Principles of distributed tracing. Context propagation, span design, correlation IDs and debugging in practice.

aiintermediate15. 05. 2025

Embedding Models — How AI Understands Text

Discover how AI understands text through embedding models. Learn the basics of vector representations, semantic...

cloudintermediate12. 05. 2025

Mac vs Linux for Developers

Mac vs Linux for developers — hardware, software, terminal, ecosystem.

aiintermediate11. 05. 2025

Vector Database Overview

What are vector DBs, how they work and when to use.

aiintermediate10. 05. 2025

LLM Hallucination Detection

How to detect and prevent hallucinations in large language models (LLMs). Practical methods and techniques for...

aiintermediate02. 05. 2025

Passkeys Implementation — Passwordless Authentication with WebAuthn

How to implement passkeys (WebAuthn/FIDO2) in web applications. Registration, authentication, platform vs...

cloudintermediate02. 05. 2025

Kubernetes Debugging

How to debug problems in Kubernetes. Kubectl commands, events, logs and ephemeral containers.

aiintermediate01. 05. 2025

ORM vs Raw SQL

When to use ORM and when raw SQL. Advantages, disadvantages, hybrid approach.

aiintermediate28. 04. 2025

Blue-Green Deployment

Zero-downtime release using two identical environments.

devopsintermediate22. 04. 2025

How to Become a DevOps Engineer

Roadmap to become a DevOps engineer — Linux, cloud, CI/CD, Kubernetes, IaC.

devopsintermediate16. 04. 2025

The Complete Guide to Monitoring

Monitoring a observability — metriky, logy, traces, alerting, SLO/SLI.

aiintermediate15. 04. 2025

DPO — Direct Preference Optimization

DPO (Direct Preference Optimization) is an advanced method for training AI models based on human preferences. A more...

aiintermediate11. 04. 2025

Data Quality Framework — Systematic Approach to Data Quality

How to build data quality framework. Quality dimensions, metrics, processes and tools.

aiintermediate08. 04. 2025

Canary Releases — Gradual Rollout

Gradual deployment of a new version to a small subset of users. Monitoring, rollback, and automation.

aiintermediate06. 04. 2025

VS Code: 30 Keyboard Shortcuts for Developers

30 VS Code shortcuts — navigation, multi-cursor, refactoring, debugging.

aiintermediate05. 04. 2025

Jailbreak Prevention

Jailbreak prevention for LLMs and AI agents — security measures against misuse, detection of harmful prompts and...

dataintermediate05. 04. 2025

Hadoop Ecosystem — HDFS, YARN and Modern Alternatives

The Hadoop ecosystem from HDFS to Hive. History and the transition to modern cloud solutions.

aiintermediate05. 04. 2025

Sed and Awk — A Practical Tutorial

A practical guide to sed and awk — text editing, data extraction and log transformation.

dataintermediate22. 03. 2025

PostgreSQL Replication

Setting up PostgreSQL replication — streaming and logical replication, automatic failover, read replicas and high...

devopsintermediate20. 03. 2025

Raspberry Pi Projects for Developers

Best Raspberry Pi projects for developers — Pi-hole, NAS, K3s, monitoring.

aiintermediate06. 03. 2025

LoRA and QLoRA — Efficient Fine-tuning

Discover LoRA and QLoRA techniques for efficient AI model fine-tuning. Learn how to adapt large language models with...

developmentintermediate02. 03. 2025

Memory Leak Hunting in Node.js

How to find memory leaks in Node.js — heap snapshots, --inspect, common patterns.

aiintermediate26. 02. 2025

Semantic Versioning

How to version software correctly using MAJOR.MINOR.PATCH — rules, examples, and automation.

aiintermediate25. 02. 2025

Feature Flags Implementation

Gradual rollout of new features. Kill switches, percentage rollout, and A/B testing.

dataintermediate23. 02. 2025

DataHub — Open Data Catalog for Modern Data Stack

DataHub from LinkedIn is open-source data catalog. Metadata, lineage and governance.

aiintermediate19. 02. 2025

Backpropagation — How Neural Networks Learn

Discover how backpropagation works — the key algorithm that enables neural networks to learn from errors and...

aiintermediate19. 02. 2025

FIDO2/Passkeys — The Future of Authentication

Passwordless authentication with WebAuthn and passkeys. Implementation and UX.

developmentintermediate15. 02. 2025

tRPC + Next.js — A Practical Integration Guide

How to integrate tRPC with Next.js App Router. Server-side calls, React Query integration, subscriptions and...

aiintermediate15. 02. 2025

Redis vs Memcached

In-memory store comparison of Redis and Memcached — data structures, persistence, performance, and when to choose which.

securityadvanced12. 02. 2025

Istio Tutorial

Istio on Kubernetes — traffic management, mTLS, observability.

aiintermediate11. 02. 2025

Certificate Management — Managing Certificates

Certificate lifecycle. Automatic renewal, monitoring, cert-manager.

dataintermediate03. 02. 2025

Redis Patterns — Cache, Session, Queue

Redis as cache, session store, pub/sub, rate limiter.

aiintermediate27. 01. 2025

Container Security — Trivy, Falco

Secure containers. Image scanning, runtime security, best practices.

aiintermediate25. 01. 2025

Airflow vs Dagster vs Prefect — Orchestration Tools Comparison

A detailed comparison of three major orchestration tools. Architecture, strengths and when to choose each.

cloudintermediate19. 01. 2025

Azure Service Bus — Enterprise Messaging

Service Bus queues, topics, sessions, dead-letter queue and transactions.

cloudadvanced15. 01. 2025

Istio — Service Mesh Guide

Istio architektura, traffic management, mTLS a observabilita.

cloudintermediate14. 01. 2025

Kubernetes Resource Limits and Requests

Proper CPU and memory configuration for pods. Requests, limits, QoS and OOMKill.

aiintermediate12. 01. 2025

LLM Evaluation — Metrics and Methods

A complete guide to evaluating large language models. Metrics, methods and tools for assessing LLM performance in practice.

cloudadvanced11. 01. 2025

Terraform Testing — Infrastructure Validation

Native terraform test, Terratest, OPA policy-as-code and plan validation.

developmentintermediate11. 01. 2025

TypeScript vs JavaScript

TypeScript adds types to JavaScript — when it pays off.

developmentintermediate09. 01. 2025

API Key Management

How to securely generate, store, rotate, and revoke API keys.

developmentintermediate05. 01. 2025

Vue 3 Reactivity System Deep Dive — Proxy, Effect and Computed

Detailed analysis of Vue 3 reactivity system built on ES6 Proxy. Understand how ref, reactive, computed and...

aiintermediate23. 12. 2024

LangChain Tutorial

Learn to work with the LangChain framework for building AI agents and applications with large language models. A...

developmentintermediate16. 12. 2024

FastAPI vs Django

FastAPI vs Django compared — async API framework vs batteries-included full-stack, with performance and decision guide.

dataintermediate12. 12. 2024

PostgreSQL JSON Operations

JSONB type, operators, indexes and practical examples.

aiintermediate11. 12. 2024

Data Vault 2.0 — Scalable Model for Enterprise Warehouse

Data Vault 2.0 — hubs, links, satellites and auditability principles for enterprise warehouse.

cloudintermediate10. 12. 2024

Flux CD — Advanced GitOps

Flux CD v2: multi-tenancy, Helm releases, image automation and notifications.

securityadvanced08. 12. 2024

Zero Trust Microsegmentation — Identity as the New Perimeter

Microsegmentation in zero trust architecture. Service mesh identity, mTLS, SPIFFE/SPIRE and policy-based access...

aiintermediate08. 12. 2024

ClickHouse Analytics

Columnar analytical database — billions of rows per second.

cloudintermediate05. 12. 2024

Kubernetes Security Hardening

Secure K8s cluster. RBAC, network policies, pod security, secrets.

cloudintermediate04. 12. 2024

AWS CloudWatch — Monitoring and Observability

CloudWatch metrics, logs, alarms, Logs Insights and Synthetics.

cloudintermediate04. 12. 2024

Kubernetes vs Docker Swarm

K8s vs Swarm — complexity, features, ecosystem, and when to use which.

cloudintermediate27. 11. 2024

Kubernetes Network Policies

Network firewall in Kubernetes. Ingress and egress rules, namespace isolation.

cloudadvanced21. 11. 2024

Service Mesh Comparison — Istio vs Linkerd vs Consul

Performance, features, complexity and when to choose which mesh.

developmentintermediate14. 11. 2024

Python Best Practices

Modern Python — type hints, project structure, linting, formatting.

dataintermediate13. 11. 2024

PostgreSQL Indexes Deep Dive

B-tree, GIN, GiST, BRIN, partial and expression indexes.

devopsintermediate12. 11. 2024

Flutter — Production Application Architecture

A complete guide to Flutter application architecture for production. BLoC pattern, dependency injection, routing,...

aiintermediate10. 11. 2024

Multi-Agent Orchestration

Discover the power of multi-agent orchestration with LLMs and AI agents. Learn to coordinate multiple intelligent...

aiadvanced10. 11. 2024

Penetration Testing — Practical Guide

How to perform a pentest. Methodology, tools, reporting.

aiintermediate09. 11. 2024

Grafana Loki — Log Aggregation

Grafana Loki for centralized log collection. Architecture, LogQL queries, label design and integration.

devopsintermediate09. 11. 2024

Observability Strategy — Metrics, Logs, Traces

Observability strategy for modern systems. Three pillars, correlation, tools and implementation plan.

dataintermediate06. 11. 2024

PostgreSQL vs MySQL

Comparing the two most popular open-source SQL databases — PostgreSQL vs MySQL, features, performance, and when to...

aiadvanced05. 11. 2024

Incident Response — A Practical Guide to Incident Management

Production incident procedure. Severity, roles, communication.

aiadvanced03. 11. 2024

Incident Response Checklist

Incident response checklist — detection, communication, mitigation, postmortem.

aiintermediate28. 10. 2024

Go Concurrency — Goroutines and Channels

Goroutines, channels, select, sync. Concurrent programming in Go.

aiintermediate24. 10. 2024

Apache Hudi — Incremental Processing in Data Lake

Apache Hudi is a table format optimised for upserts and CDC. Copy-on-write and merge-on-read.

aiintermediate14. 10. 2024

Code Review Checklist

Code review checklist — what to focus on when reviewing pull requests.

cloudintermediate14. 10. 2024

Pinecone Tutorial

Pinecone as a managed vector database — serverless setup, indexing embeddings, similarity search and integration...

aiintermediate11. 10. 2024

Regex: Cheat Sheet with Practical Examples

Regex cheat sheet — basic characters, quantifiers, lookahead, practical examples.

architectureadvanced08. 10. 2024

CQRS — Separating Reads and Writes

Command Query Responsibility Segregation for better scalability. Implementation with practical examples.

aiintermediate05. 10. 2024

Brute Force Prevention

How to protect login, API, and forms against brute force attacks.

architectureadvanced27. 09. 2024

Saga Pattern — Distributed Transactions Without 2PC

Saga pattern implementation for data consistency across microservices. Choreography vs orchestration.

aiintermediate27. 09. 2024

The Complete Guide to SQL

SQL from basics to advanced — SELECT, JOIN, subqueries, window functions, CTEs.

aiintermediate25. 09. 2024

Rate Limiting Implementation

How to implement rate limiting. Token bucket, sliding window, distributed rate limiting.

developmentintermediate23. 09. 2024

gRPC Tutorial — Fast Internal Communication

gRPC for communication between microservices. Protocol Buffers, streaming and examples in Node.js.

developmentintermediate23. 09. 2024

Conventional Commits

Standardized commit messages. Automatic changelog and versioning.

aiintermediate23. 09. 2024

Platform Engineering — Internal Developer Platform

Building an internal developer platform. Self-service, golden paths, developer experience and Backstage.

aiintermediate21. 09. 2024

Batch Normalization — Stable Network Training

Batch Normalization is a key technique for stabilising deep neural network training. It accelerates convergence and...

aiintermediate15. 09. 2024

Transformer Architecture — A Complete Guide

A complete guide to the Transformer architecture — the revolutionary AI technology behind GPT, BERT and other...

cloudintermediate13. 09. 2024

Azure Front Door — Global Load Balancer

Front Door routing, WAF policies, caching and Private Link origins.

aiintermediate10. 09. 2024

Performance testing checklist

Performance testing checklist — load testing, stress testing, baseline, metrics.

dataintermediate08. 09. 2024

Apache Flink — Real-time Stream Processing Engine

Apache Flink is a framework for stateful stream processing. Windowing, event time and exactly-once semantics.

aiintermediate03. 09. 2024

SBOM Generation — Software Bill of Materials

What is SBOM, why you need it, and how to generate it.

aiintermediate01. 09. 2024

Horizontal Pod Autoscaler

Automatic pod scaling based on CPU, memory or custom metrics.

aiintermediate26. 08. 2024

Artifact Management

Build artifact management. Docker registry, npm, Maven.

devopsintermediate23. 08. 2024

SRE Golden Signals

Ctyri golden signals: Latency, Traffic, Errors, Saturation.

cloudadvanced17. 08. 2024

IaC Comparison — Terraform vs Pulumi vs CDK vs Crossplane

Comparison of IaC tools: language, state, ecosystem and when to choose which.

cloudintermediate12. 08. 2024

Azure Event Grid — Event-Driven Architecture

Event Grid topics, subscriptions, filtering, dead-lettering and CloudEvents.

aiintermediate12. 08. 2024

Pagination Patterns

Offset vs cursor pagination. Keyset pagination, infinite scroll.

aiintermediate10. 08. 2024

Transfer Learning — Leveraging Pre-trained Models

Transfer Learning enables leveraging pre-trained models for new tasks with less data. Learn how to effectively apply...

developmentintermediate10. 08. 2024

Python Profiling: A Complete Guide

Python profiling — cProfile, snakeviz, line_profiler, memory_profiler, py-spy.

aiintermediate08. 08. 2024

FinOps — Cloud Financial Management

FinOps framework, showback/chargeback, budgeting and cultural change.

aiintermediate08. 08. 2024

Distroless Container Images

Minimalistic container images without OS. Maximum security, minimal attack surface.

cloudintermediate04. 08. 2024

Kubernetes Admission Webhooks

Validating and Mutating admission webhooks. Policy enforcement, auto-injection, and security in K8s clusters.

securityintermediate03. 08. 2024

SSL/TLS checklist

SSL/TLS checklist — certificates, protocols, HSTS, certificate transparency.

developmentintermediate01. 08. 2024

React Hooks Tutorial

useState, useEffect, useContext, custom hooks. Modern React.

cloudintermediate28. 07. 2024

Container Networking in Kubernetes

Kubernetes networking model. CNI plugins, Service types, Ingress controllers and DNS.

aiintermediate23. 07. 2024

Riverpod — State Management for Flutter

Riverpod is a modern state management solution for Flutter. Learn providers, code generation, AsyncValue and...

aiintermediate22. 07. 2024

Loss Functions — Overview and Selection for Your Model

A complete guide to loss functions for machine learning. Learn to choose the right loss function for classification,...

securityintermediate22. 07. 2024

OAuth 2.0 — A Complete Guide to Flows

Authorization Code, PKCE, Client Credentials. When to use which.

developmentintermediate12. 07. 2024

API Versioning Strategies

How to version REST APIs without breaking clients. URL, header, and query parameter versioning.

aiintermediate12. 07. 2024

Bash One-Liners for Daily Work

A collection of practical Bash one-liners for everyday administration.

dataintermediate10. 07. 2024

PostgreSQL Advanced Features

JSONB, CTE, window functions, partitioning, extensions.

developmentintermediate08. 07. 2024

nginx: 10 Configuration Hacks

nginx hacks — rate limiting, caching, security headers, gzip, reverse proxy.

cloudintermediate06. 07. 2024

Serverless Patterns — Architectural Patterns

Fan-out, Step Functions orchestration, CQRS and event sourcing on serverless.

aiintermediate06. 07. 2024

PWA Offline Strategies — Cache Patterns and Data Synchronization

Advanced offline strategies for PWA. Cache-first, network-first, stale-while-revalidate, background sync and...

aiintermediate23. 06. 2024

Go Profiling with pprof: A Practical Guide

Go profiling with pprof — CPU, memory, goroutine profiling, flame graphs.

developmentintermediate21. 06. 2024

Weaviate Tutorial

Weaviate tutorial — hybrid search combining vectors and keywords, schema definition, GraphQL queries and Docker deployment.

cloudintermediate17. 06. 2024

Dockerfile Best Practices

Dockerfile optimization for smaller images, faster builds and security.

devopsintermediate17. 06. 2024

Monitoring Stack in 15 Minutes

A working monitoring stack in 15 minutes — Prometheus + Grafana in Docker Compose.

aiintermediate13. 06. 2024

Slowly Changing Dimensions — Managing Historical Changes

Slowly Changing Dimensions (SCD) Type 1, 2, and 3. Implementation in dbt and warehouse.

aiintermediate10. 06. 2024

GDPR Technical Implementation

How to comply with GDPR technically. Pseudonymization, encryption, data retention, data subject rights.

developmentintermediate27. 05. 2024

Django REST Framework

How to build an API with Django REST Framework. Serializers, viewsets, permissions.

developmentintermediate26. 05. 2024

How to Learn Programming in 6 Months

A realistic plan for learning programming in 6 months and finding your first job.

cloudintermediate26. 05. 2024

Kubernetes Troubleshooting: Complete Flowchart

Kubernetes troubleshooting flowchart — Pod not starting, CrashLoopBackOff, networking.

securityadvanced25. 05. 2024

Zero Trust Networking in Cloud

Zero Trust principles, identity-based access, micro-segmentation and BeyondCorp.

cloudintermediate21. 05. 2024

Kubernetes Cost Optimization

Kubernetes cost optimization. Right-sizing, spot instances, resource quotas and cost visibility tools.

cloudintermediate19. 05. 2024

Cloud Cost Optimisation — A Practical Guide

Right-sizing, reserved capacity, spot instances, tagging and governance.

developmentintermediate18. 05. 2024

How to Choose Your First Programming Language

A guide to choosing your first programming language — by goal, not by hype.

developmentintermediate17. 05. 2024

Pod Security Standards — Kubernetes

Privileged, Baseline, Restricted. How to enforce security standards on pods.

devopsintermediate15. 05. 2024

Data Pipeline Testing — Strategies and Tools

How to test data pipelines. Unit tests, integration tests and data quality checks in CI/CD.

aiintermediate15. 05. 2024

OWASP Top 10: Security Misconfiguration

Most common mistakes in server, framework, and cloud service configuration.

aiintermediate08. 05. 2024

System Prompt Design

A complete guide to system prompt design for LLMs and AI agents. Learn to create effective instructions that improve...

aiintermediate03. 05. 2024

OpenMetadata — Data Catalog with Collaboration and Active Metadata

OpenMetadata is an open-source catalog focused on collaboration. Active metadata, profiler, and governance.

aiintermediate02. 05. 2024

AWS Route 53 — DNS and Traffic Management

Route 53 routing policies, health checks, DNS failover and DNSSEC.

aiintermediate28. 04. 2024

Model Quantization — GPTQ, GGUF, AWQ

A guide to AI model quantization: GPTQ, GGUF and AWQ methods for running large language models efficiently with...

aiintermediate27. 04. 2024

API Design First — OpenAPI, Code Generation and Governance

Design-first approach to API development. OpenAPI specifications, automatic code generation, API linting, style...

dataintermediate27. 04. 2024

Connection Pooling

How to properly pool database connections. PgBouncer, HikariCP, SQLAlchemy.

aiintermediate26. 04. 2024

SRE — Postmortems Best Practices

Blameless postmortems in practice. Structure, facilitation, action plans and building a learning culture.

developmentintermediate26. 04. 2024

Envoy Proxy

High-performance L7 proxy — architecture, configuration, filters.

aibeginner20. 04. 2024

SIEM Basics — Security Information and Event Management

What is SIEM, how it works, open-source vs commercial solutions.

aiintermediate13. 04. 2024

Pub/Sub vs Point-to-Point

Difference between pub/sub and point-to-point messaging. When to use which model.

aiintermediate11. 04. 2024

Load Testing Strategies — From Smoke Tests to Stress Testing

A complete overview of load testing strategies. Smoke, load, stress, spike, soak tests — when to use each type and...

developmentintermediate07. 04. 2024

How Much Does a Programmer Earn in the Czech Republic (2025)

Real programmer salaries in the Czech Republic 2025 — junior, mid-level, senior.

aiintermediate05. 04. 2024

MongoDB Indexing

Guide to MongoDB indexing — index types, compound and multikey indexes, explain plans and query performance optimization.

aiintermediate05. 04. 2024

Deployment Strategies — A Complete Guide

Overview of deployment strategies. Rolling update, Recreate, Blue-Green, Canary, A/B testing and Shadow deployment.

aiintermediate28. 03. 2024

OWASP Top 10: Cryptographic Failures

How to properly encrypt data and avoid cryptographic mistakes.

dataintermediate24. 03. 2024

OLAP vs OLTP — Analytical vs Transactional Databases

Difference between OLAP and OLTP databases. Columnar vs row storage and choosing for different use cases.

developmentintermediate23. 03. 2024

SQL Injection Prevention — A Complete Guide

How to prevent SQL injection in various languages. Prepared statements, ORM, WAF.

aiintermediate22. 03. 2024

Query Optimization

How to optimize database queries. EXPLAIN, rewrite, materialized views.

aiintermediate18. 03. 2024

Human-in-the-Loop Patterns

Discover Human-in-the-Loop patterns for LLMs and AI agents. Practical approaches for combining human intelligence...

dataintermediate16. 03. 2024

Dagster — Modern Orchestration with Asset-Based Approach

Dagster brings asset-oriented approach to orchestration. Software-defined assets, type system and monitoring.

developmentintermediate14. 03. 2024

Docker Image: From 5 GB to 50 MB

How to shrink a Docker image from 5 GB to 50 MB. Multi-stage builds, Alpine, distroless.

aiintermediate14. 03. 2024

Ollama vs vLLM

Local LLM inference — Ollama for simplicity, vLLM for performance.

aiintermediate09. 03. 2024

Key Rotation — Rotating Cryptographic Keys

Why and how to rotate encryption keys. Automation, grace period, re-encryption.

aiintermediate08. 03. 2024

Kubernetes Persistent Volumes

Persistent storage in Kubernetes. PV, PVC, StorageClass and cloud provider integration.

aiintermediate05. 03. 2024

Hybrid Search — BM25 + Vector

Discover the power of hybrid search combining BM25 and vector embeddings. Learn to implement advanced search systems...

cloudadvanced04. 03. 2024

Service Mesh — Istio and Linkerd

Service mesh for microservice architectures. Istio vs Linkerd, mTLS, traffic management and observability.

dataintermediate02. 03. 2024

WebSocket — Real-Time Communication

WebSocket server implementation for chat, notifications and live dashboards. Scaling with Redis.

aibeginner28. 02. 2024

MongoDB Installation and Basics

Getting started with MongoDB — Docker installation, basic CRUD operations, document schema design and creating indexes.

developmentintermediate27. 02. 2024

DAST Tools — Dynamic Analysis

OWASP ZAP, Nuclei, Nikto. Testing a running application.

aiintermediate25. 02. 2024

Release Management

Managing releases. Release trains, feature flags, rollback.

aiintermediate24. 02. 2024

Retry Pattern — Smart Retries

Proper implementation of retry logic. Exponential backoff, jitter and when NOT to retry.

aiintermediate23. 02. 2024

Tokenization — BPE, WordPiece and Text Processing

A complete guide to text tokenisation in AI — BPE, WordPiece algorithms and their use in modern language models....

devopsintermediate17. 02. 2024

GitLab CI — Advanced Pipelines

GitLab CI advanced techniques: DAG pipelines, child pipelines, includes and review apps.

aiintermediate06. 02. 2024

CI/CD Pipeline Checklist

CI/CD pipeline checklist — build, test, security, deploy, monitoring.

aiintermediate01. 02. 2024

Linux Performance Tuning

Performance optimization — CPU, memory, I/O, network, kernel parameters.

developmentintermediate25. 01. 2024

Self-hosting: What Makes Sense to Host Yourself

What's worth self-hosting and what isn't. A practical service overview.

aiintermediate23. 01. 2024

Eventual Consistency in Practice

What is eventual consistency and how to work with it in UI and backend.

aiintermediate23. 01. 2024

SQLite for Prototyping

SQLite as an embedded SQL database in a single file — no server needed, full SQL with CTE and window functions,...

aiintermediate20. 01. 2024

Will AI Replace Programmers? Reality vs Hype

Will AI replace programmers? A realistic look at Copilot, GPT and the future of programming.

dataintermediate12. 01. 2024

AWS RDS — Managed Databases

Relational Database Service. Multi-AZ, Read Replicas, Aurora, backup, and performance tuning.

aiintermediate03. 01. 2024

DDD Bounded Contexts — Domain Boundaries

How to define bounded contexts in Domain-Driven Design. Context mapping and ubiquitous language.

cloudintermediate24. 12. 2023

Consul Connect — Service Mesh by HashiCorp

Consul service discovery, Connect proxy, intentions and multi-datacenter.

aiintermediate21. 12. 2023

SQL Optimization

How to write fast SQL queries. EXPLAIN, indexes, query patterns.

developmentintermediate17. 12. 2023

The Complete Guide to GraphQL

GraphQL — schema, queries, mutations, subscriptions, vs REST.

aiintermediate15. 12. 2023

Batch vs Stream Processing — How to Choose the Right Approach

Comparison of batch and stream processing. Latency, throughput and typical use cases.

aiintermediate11. 12. 2023

Runtime Security — Protecting Running Applications

Falco, Tetragon, runtime threat detection and response.

developmentintermediate10. 12. 2023

Expo — Modern React Native Development Without Xcode or Android Studio

Expo simplifies React Native development. Expo Router, EAS Build, Config Plugins, prebuild workflow and deployment...

devopsintermediate04. 12. 2023

Prometheus vs Datadog

Open-source pull-based monitoring vs managed SaaS platform.

securityintermediate03. 12. 2023

CSRF Protection — Cross-Site Request Forgery

How CSRF attacks work and how to defend against them. Token, SameSite cookies, Double Submit.

aiintermediate27. 11. 2023

Visual Regression Testing — Automated UI Control

How to implement visual regression testing. Playwright screenshots, Percy, Chromatic, pixel comparison and...

dataintermediate26. 11. 2023

Real-Time Analytics — Architecture for Real-Time Analysis

Real-time analytics architecture. Lambda vs Kappa, streaming pipelines and OLAP engines.

cloudintermediate25. 11. 2023

AWS S3 — Advanced Features

S3 lifecycle policies, replication, event notifications, Object Lock and access policies.

developmentintermediate21. 11. 2023

ArgoCD — Advanced Configuration

ArgoCD ApplicationSets, multi-cluster management, Sync Waves and hook-based deployments.

architectureintermediate17. 11. 2023

Service Discovery — How Services Find Each Other

Service discovery mechanisms in microservice architecture. Client-side vs server-side discovery, Consul and Kubernetes DNS.

cloudintermediate15. 11. 2023

Encryption at Rest — Encrypting Stored Data

How to encrypt data on disk. AES-256, LUKS, cloud KMS, database encryption.

architectureadvanced12. 11. 2023

Event Sourcing — State as a History of Events

Store state as a sequence of events. Event store, projections, snapshots and implementation.

aiintermediate11. 11. 2023

Modern Data Stack — Tool Overview for Modern Data Platforms

Modern Data Stack overview. Ingestion, warehouse, transformation, orchestration, quality and visualization.

aiintermediate06. 11. 2023

Reverse ETL — Data Activation from Warehouse to Operational Systems

Reverse ETL syncs data from the warehouse back to CRM and marketing tools.

cloudintermediate01. 11. 2023

API Gateway Patterns

Routing, aggregation, authentication, rate limiting.

cloudintermediate24. 10. 2023

Google Cloud Pub/Sub — Messaging

Pub/Sub topics, subscriptions, exactly-once delivery and BigQuery export.

developmentintermediate23. 10. 2023

Next.js vs Nuxt vs SvelteKit

Meta-frameworks for SSR, SSG, and full-stack development.

devopsintermediate22. 10. 2023

CI/CD Security — Pipeline Security

Security best practices for CI/CD pipeline. Secret management, supply chain security and SLSA.

developmentintermediate20. 10. 2023

Azure App Service

Deploying web applications on Azure App Service. Configuration, scaling and CI/CD.

developmentintermediate18. 10. 2023

The Complete Guide to WebSocket

WebSocket — real-time komunikace, protokol, implementace, scaling.

cloudintermediate03. 10. 2023

Apache Pulsar — Cloud-Native Messaging and Streaming

Apache Pulsar separates compute from storage. Multi-tenancy, tiered storage and Pulsar Functions.

infrastructureintermediate26. 09. 2023

OWASP Top 10: Server-Side Request Forgery (SSRF)

SSRF attacks — how an attacker exploits a server to access internal services.

dataintermediate20. 09. 2023

Debezium — Change Data Capture for Real-time Replication

Debezium is open-source CDC platform. Capturing database changes via Kafka Connect.

aiintermediate12. 09. 2023

ECS Fargate — Production Patterns

Fargate autoscaling, EFS volumes, blue-green deploy and pricing.

aiintermediate11. 09. 2023

Alerting That Makes Sense

How to set up alerting that doesn't cause alert fatigue — symptoms vs causes, severity, runbooks.

cloudintermediate08. 09. 2023

Pulumi Tutorial — IaC in a Programming Language

Infrastructure as Code in TypeScript, Python or Go. An alternative to Terraform.

aiintermediate28. 08. 2023

The Complete Guide to Kubernetes

Kubernetes from the basics — pods, services, deployments, ingress, monitoring.

aiintermediate22. 08. 2023

Python vs Go for Backend

Python for productivity, Go for performance and simplicity.

aiintermediate18. 08. 2023

How to Write Technical Documentation

How to write documentation people will actually read — types, structure, tools.

dataintermediate07. 08. 2023

When to Use NoSQL vs SQL

SQL vs NoSQL — PostgreSQL vs MongoDB vs Redis. When to use what.

cloudintermediate07. 08. 2023

ArgoCD vs FluxCD

GitOps on Kubernetes — ArgoCD with UI vs FluxCD native in K8s.

dataintermediate28. 07. 2023

Azure Cosmos DB — Global NoSQL

Cosmos DB API models, consistency levels, partitioning and RU optimization.

cloudadvanced28. 07. 2023

Istio Traffic — Advanced Patterns

Fault injection, circuit breaking, request mirroring and header-based routing.

devopsintermediate16. 07. 2023

Prometheus — Advanced Metrics and PromQL

Advanced PromQL queries, recording rules, federation and long-term storage with Thanos/Mimir.

infrastructureintermediate11. 07. 2023

How to Secure Your Home Network

A practical guide to securing your home network — router, DNS, VPN, segmentation.

developmentintermediate07. 07. 2023

Node.js Best Practices

Production Node.js — error handling, logging, security, performance.

dataintermediate04. 07. 2023

PostgreSQL Partitioning

Declarative partitioning in PostgreSQL for large tables — range, list and hash strategies, partition maintenance and...

cloudintermediate01. 07. 2023

Secrets in Kubernetes

How to properly manage secrets in K8s. External Secrets, Sealed Secrets, Vault.

cloudintermediate28. 06. 2023

kubectl Cheat Sheet

The most commonly used kubectl commands for everyday work with Kubernetes.

aiintermediate10. 06. 2023

Tool Use Patterns

Discover effective tool use patterns for large language models and AI agents. Practical approaches for optimising...

dataintermediate10. 06. 2023

Redis Pub/Sub

Real-time messaging with Redis Pub/Sub — publish, subscribe, pattern matching, limitations and comparison with Redis Streams.

cloudintermediate09. 06. 2023

Google Cloud Functions — Serverless v2

Cloud Functions 2nd gen, Eventarc triggers, concurrency and secrets.

developmentintermediate09. 06. 2023

Prefect — Workflow Orchestration Without Boilerplate

Prefect offers a Pythonic approach to orchestration with minimal configuration. Flows, tasks, and retry logic.

cloudintermediate06. 06. 2023

Google Firestore — Serverless NoSQL

Firestore data model, real-time listeners, security rules and offline support.

dataintermediate26. 05. 2023

How Much Does Web Application Hosting Cost (2025)

Real costs of web application hosting — from free tier to enterprise.

aiintermediate23. 05. 2023

Container Security — Build to Runtime

Image hardening, supply chain, runtime protection and scanning.

cloudintermediate18. 05. 2023

AWS CDK — Cloud Development Kit

CDK constructs L1/L2/L3, stacks, aspects and testing.

architectureintermediate14. 05. 2023

Strangler Fig Pattern — Migrating from a Monolith

Gradual migration from monolith to microservices. A safe, incremental approach.

securityintermediate02. 05. 2023

SSL/TLS Configuration — Secure HTTPS

Proper TLS 1.3 configuration, cipher suites, certificates.

cloudadvanced22. 04. 2023

Terraform — Advanced Patterns

Remote state, locking, moved blocks, import and CI/CD pipeline.

aiintermediate19. 04. 2023

SLO/SLI Definitions

Service Level Indicators and Objectives. Measuring reliability.

aiintermediate17. 04. 2023

Progressive Delivery — Canary, Blue-Green and Feature Flags

Progressive delivery strategies. Canary with metrics, blue-green with rollback and feature flags.

aiintermediate16. 04. 2023

Flask vs FastAPI — When to Use Which Framework

Comparison of Flask and FastAPI. Performance, ecosystem, learning curve.

infrastructureintermediate13. 04. 2023

SSH Tunnels and Port Forwarding

A practical guide to SSH tunnels — local, remote, dynamic, jump host.

aiintermediate10. 04. 2023

PWA vs Native Apps — When to Choose Which Technology

Detailed comparison of PWA and native applications. Performance, features, distribution, UX and decision framework...

aiintermediate02. 04. 2023

Cron and Systemd Timers

Comparing cron and systemd timers for task scheduling.

developmentintermediate27. 03. 2023

15 Git Commands Every Developer Should Know

15 Git commands from interactive rebase to bisect. Complete overview for developers.

aiintermediate23. 03. 2023

SSH: 12 Tricks You Probably Don't Know

Advanced SSH tricks — tunnelling, multiplexing, jump hosts, SOCKS proxy.

dataintermediate09. 03. 2023

Apache Kafka — Distributed Streaming Platform

Apache Kafka is a distributed event streaming system. Topics, partitioning and consumer groups.

developmentintermediate27. 02. 2023

GitHub Actions — Advanced Workflows

Advanced GitHub Actions techniques: matrix builds, reusable workflows, composite actions and self-hosted runners.

aiintermediate22. 02. 2023

OWASP Top 10: Insecure Design

Secure application design from the start. Threat modeling, security requirements and secure by design principles.

cloudintermediate12. 02. 2023

AWS IAM — Identity & Access Management

IAM policies, roles, STS, permission boundaries and least privilege best practices.

aiintermediate09. 02. 2023

SAML 2.0 — Enterprise Single Sign-On in Practice

SAML 2.0 for enterprise SSO. Assertion flow, metadata, SP-initiated vs IdP-initiated login, certificates and...

aiintermediate08. 02. 2023

OpenID Connect — Authentication on Top of OAuth 2.0

How OIDC extends OAuth with identity. ID Token, UserInfo, discovery.

aiintermediate02. 02. 2023

WebSocket Real-Time App

WebSocket server and client. Chat, notifications, live updates.

dataintermediate01. 02. 2023

Elasticsearch Tutorial

Full-text search, indexing, queries, aggregations.

dataintermediate28. 01. 2023

Apache Iceberg — Open Table Format for Data Lake

Apache Iceberg — hidden partitioning, schema evolution and time travel. Vendor-neutral.

infrastructureintermediate22. 01. 2023

Linux Networking — ip, ss, iptables

Network management — ip, ss, iptables commands, routing and diagnostics.

cloudadvanced07. 01. 2023

Terraform State Management

Managing Terraform state in team. Remote backend, locking, state operations.

developmentintermediate26. 12. 2022

API Debugging: Complete Toolkit

Complete toolkit for API debugging — curl, httpie, Postman, mitmproxy.

cloudintermediate25. 12. 2022

Kubernetes Operators — Writing a Custom Operator

Developing a Kubernetes operator with the Operator SDK. Reconciliation loop, finalizers and status management.

cloudintermediate13. 12. 2022

Kubernetes Cluster Checklist

Checklist for production Kubernetes cluster — networking, security, monitoring.

cloudintermediate11. 11. 2022

Container Registry

Managing Docker images in a container registry — comparing Docker Hub, ECR, ACR, GCR and Harbor, security, tagging...

dataintermediate06. 11. 2022

dbt — Data Transformation in Warehouse Using SQL

dbt enables data transformation in warehouse using SQL. Models, tests, documentation and versioning.

cloudintermediate01. 11. 2022

Crossplane — K8s-Native IaC

Infrastructure as Kubernetes resources. Crossplane compositions and claims.

cloudadvanced19. 10. 2022

Terraform from Scratch

Infrastructure as Code with Terraform. Providers, resources, state, and first deployment.

securityintermediate15. 10. 2022

Content Security Policy (CSP) — A Practical Guide

CSP header for XSS protection. Directives, nonce, reporting.

cloudintermediate14. 10. 2022

external-dns — Automatic DNS Records

Automatic DNS record synchronization from Kubernetes Services and Ingress.

developmentintermediate02. 10. 2022

tRPC — End-to-End Type-Safe API Without Extra Code

tRPC eliminates the need for REST/GraphQL schemas. Learn type-safe API with automatic type inference between server...

cloudintermediate02. 10. 2022

Azure Logic Apps — Workflow Automation

Logic Apps designer, connectors, Standard vs Consumption and error handling.

developmentintermediate13. 09. 2022

Elasticsearch Installation

Complete guide to installing Elasticsearch with Docker. Cluster configuration, creating your first index, inserting...

cloudadvanced05. 09. 2022

Terraform Modules

Reusable Terraform modules. Structure, registry and best practices.

infrastructureintermediate03. 09. 2022

Journalctl — Debugging and Log Analysis

A practical guide to journalctl — filtering, service monitoring and log rotation.

devopsintermediate23. 08. 2022

Grafana — Effective Dashboards

Best practices for Grafana dashboards. Dashboard as Code, provisioning, alerting and design principles.

developmentintermediate20. 08. 2022

Rust Error Handling

Result, Option, ? operator, custom errors. Rust error handling idioms.

developmentintermediate12. 08. 2022

Web Components in 2025 — Shadow DOM, Custom Elements and Lit

A complete guide to Web Components in 2025. Custom Elements, Shadow DOM, HTML Templates, the Lit framework and...

cloudintermediate04. 08. 2022

AWS S3 + CloudFront

Static hosting with S3 and CDN distribution via CloudFront.

cloudadvanced03. 08. 2022

The Complete Guide to Terraform

Terraform from the basics — providers, resources, state, modules, best practices.

developmentintermediate03. 08. 2022

Open Source: How to Start Contributing

How to start contributing to open source — find project, first PR, community.

cloudintermediate28. 07. 2022

Google BigQuery — Serverless Data Warehouse

BigQuery architecture, partitioning, clustering, ML and cost control.

developmentintermediate17. 07. 2022

Docker Networking Deep Dive

Docker networking — bridge, host, overlay, DNS and debugging.

dataintermediate16. 07. 2022

Database Migration Checklist

Database migration checklist — planning, testing, rollback, zero-downtime.

cloudintermediate11. 07. 2022

Infrastructure as Code — Advanced Patterns

IaC best practices. Terraform modules, state management, testing and drift detection.

securityadvanced03. 07. 2022

Zero Trust Architecture — Never Trust, Always Verify

Zero trust principles, implementation, micro-segmentation, identity-based access.

developmentintermediate02. 07. 2022

CSS Subgrid — A Complete Guide to Nested Grids

CSS Subgrid allows nested elements to inherit grid definition from parent. Learn practical patterns for card...

dataintermediate25. 06. 2022

CAP Theorem in Practice

Practical implications of the CAP theorem on system design. CP vs AP systems.

developmentintermediate22. 06. 2022

The Complete Guide to Docker

Docker od nuly — images, containers, Dockerfile, Compose, networking, volumes.

developmentintermediate21. 06. 2022

SRE — Capacity Planning

Infrastructure capacity planning. Forecasting, load testing, headroom and growth modeling.

dataintermediate20. 06. 2022

Kafka Connect — System Integration Without Code

Kafka Connect links Kafka with databases, files and cloud services. Source and sink connectors without coding.

devopsintermediate18. 06. 2022

Alerting Best Practices

Effective alerting for production systems. Alert design, routing, grouping and noise reduction.

dataintermediate04. 06. 2022

Apache Spark — Distributed Batch Processing of Big Data

Apache Spark is an engine for distributed data processing. DataFrame API, Spark SQL and optimization.

cloudintermediate03. 06. 2022

AWS Lambda Tutorial

Serverless functions on AWS. Triggers, cold start, layers, and best practices.

developmentintermediate17. 05. 2022

Python: 25 One-Liners for Productivity

25 Python one-liners — HTTP server, JSON formatting, password generation and more.

cloudintermediate11. 05. 2022

Kubernetes Backup and Disaster Recovery

Backup and recovery strategies for Kubernetes clusters. Velero, etcd backup, PV snapshots and DR plans.

dataintermediate08. 05. 2022

Kafka vs RabbitMQ

Event streaming vs message broker — architecture and use cases.

cloudintermediate11. 04. 2022

Backup Strategy Checklist

Backup checklist — 3-2-1 rule, testing, retention, encryption.

dataintermediate10. 04. 2022

Docker Volumes and Storage

Managing data in Docker — volumes, bind mounts and best practices.

infrastructureintermediate08. 03. 2022

The Complete Guide to the Linux Command Line

Linux command line from the basics — navigation, files, processes, networking, scripting.

developmentadvanced03. 03. 2022

Terraform vs Pulumi

Infrastructure as Code — HCL vs programming languages.

guidebeginner28. 02. 2022

Progressive Web Apps (PWA) — A Complete Guide 2025

A complete guide to building Progressive Web Apps. Service Workers, Web App Manifest, offline strategies, push...

cloudintermediate16. 02. 2022

GitOps — Infrastructure from Git

GitOps principles, ArgoCD, ApplicationSets, and progressive delivery.

cloudintermediate12. 02. 2022

AWS VPC — Virtual Private Cloud

VPC design, subnets, NAT Gateway, Transit Gateway, and security groups.

developmentintermediate12. 01. 2022

Advanced gRPC Patterns — Streaming, Interceptors and Error Handling

Advanced gRPC patterns for production systems. Bidirectional streaming, interceptors, deadline propagation, error...

cloudadvanced08. 01. 2022

Terraform Drift Detection

Drift detection, terraform plan -refresh-only, prevention and remediation.

infrastructureintermediate08. 01. 2022

tcpdump Tutorial

Packet capturing, filtering and saving for Wireshark.

developmentintermediate03. 01. 2022

CSS Container Queries — Next-Generation Responsive Design

Container Queries change responsive design. Learn @container rules, container-type, named containers and practical...

developmentintermediate17. 12. 2021

The Complete Guide to TypeScript

TypeScript from the basics — types, interfaces, generics, utility types, best practices.

dataintermediate03. 12. 2021

PostgreSQL: 15 Optimization Tricks

PostgreSQL optimization — indexes, EXPLAIN ANALYZE, connection pooling, vacuum and more.

securityintermediate21. 11. 2021

HTTP/2 and HTTP/3

Multiplexing in HTTP/2, QUIC in HTTP/3, and how to deploy.

infrastructureintermediate16. 11. 2021

Why Switch from Windows to Linux (and When Not To)

Windows vs Linux for developers — when to switch, when to stay, WSL as a compromise.

cloudintermediate13. 11. 2021

KEDA — Event-driven Autoscaling

Kubernetes Event-driven Autoscaler. Scaling based on queues, metrics, and external sources — down to zero.

developmentintermediate12. 10. 2021

VPN: When and Why to Use One

VPN guide — when it makes sense, commercial vs self-hosted, WireGuard setup.

infrastructureintermediate01. 10. 2021

DNS Configuration — BIND and CoreDNS

BIND for traditional deployments, CoreDNS for Kubernetes.

devopsintermediate28. 09. 2021

Prometheus Alerting Rules

Alert configuration in Prometheus. PrometheusRule, Alertmanager routing and best practices.

dataintermediate25. 09. 2021

PostgreSQL Installation and Configuration

Complete guide to PostgreSQL installation and configuration.

guideintermediate07. 09. 2021

The Complete Guide to OAuth/OIDC

OAuth 2.0 a OpenID Connect — flows, tokeny, best practices.

developmentintermediate28. 08. 2021

CORS Configuration — Cross-Origin Resource Sharing

Proper CORS configuration. Preflight requests, Access-Control headers.

architectureintermediate17. 08. 2021

API Gateway Design — When and How

How to design an API Gateway for microservice architecture. Routing, authentication, rate limiting, and best practices.

dataintermediate05. 08. 2021

Redis Streams

Persistent event streaming with Redis Streams — append-only log, consumer groups, acknowledgment and use cases for...

developmentintermediate21. 07. 2021

Java vs Kotlin

Java — stability and ecosystem. Kotlin — modern syntax on the JVM.

cloudintermediate15. 07. 2021

AWS vs Azure vs GCP

Comparison of the three major cloud providers — services, pricing, and ecosystem.

developmentintermediate15. 07. 2021

REST vs GraphQL vs gRPC

Three major API paradigms — REST, GraphQL, and gRPC.

infrastructureintermediate05. 07. 2021

IPv6 Migration

Dual-stack, addressing, configuration, and testing.

architectureadvanced26. 06. 2021

MongoDB Sharding

A practical guide to horizontal scaling of MongoDB with sharding. Shard keys, chunks, balancer configuration and...

developmentintermediate25. 06. 2021

CI/CD Pipeline in 5 Minutes

Working CI/CD pipeline in 5 minutes with GitHub Actions. Build, test, deploy.

securityintermediate04. 06. 2021

WAF Configuration — Web Application Firewall

ModSecurity, AWS WAF, Cloudflare WAF. Rules and false positives.

developmentintermediate08. 05. 2021

OIDC Implementation in Node.js and React — From Theory to Practice

Practical OpenID Connect implementation in Node.js backend and React frontend. Keycloak integration, token...

cloudintermediate12. 04. 2021

Vertical Pod Autoscaler

Automatic CPU and memory configuration for containers. Recommendations and auto-update.

developmentintermediate28. 03. 2021

The Best Programming Language for Beginners

Which programming language to learn first? Comparison of Python, JavaScript, Java, Go.

developmentintermediate07. 03. 2021

OWASP Top 10: Vulnerable and Outdated Components

How to manage dependencies and protect against vulnerabilities in third-party libraries.

dataintermediate13. 01. 2021

Schema Registry — Central Schema Management for Streaming

Schema Registry versions schemas in the Kafka ecosystem. Avro, Protobuf and compatibility strategies.

cloudintermediate05. 01. 2021

AWS EKS — Managed Kubernetes

Elastic Kubernetes Service. Cluster setup, node groups, Fargate profiles, IRSA and add-ons.

dataintermediate21. 12. 2020

Lakehouse vs Data Warehouse — When to Choose Which Approach

Comparison of lakehouse and traditional data warehouse. Architecture, costs, performance and migration.

developmentintermediate04. 12. 2020

HAProxy Tutorial

Installation, configuration, health checks, SSL, and monitoring.

architectureintermediate21. 11. 2020

Shared Database Anti-pattern

Why shared database in microservices is an anti-pattern and how to get out of it.

developmentintermediate20. 11. 2020

Load Testing with k6 — Performance Testing for Modern APIs

A complete guide to load testing with k6 from Grafana Labs. JavaScript scripting, load scenarios, thresholds,...

developmentintermediate17. 11. 2020

Functional Programming Principles

Pure functions, immutability, higher-order functions. FP in practice.

cloudintermediate07. 09. 2020

Ingress Controllers — Nginx and Traefik

HTTP routing v Kubernetes. Nginx Ingress, Traefik, TLS terminace a path-based routing.

architectureintermediate17. 08. 2020

Monolith vs Microservices: When to Use What

Monolith vs microservices — advantages, disadvantages, when to switch.

devopsintermediate12. 08. 2020

Bash Scripting from Scratch — A Complete Guide

Learn Bash scripting from the basics — variables, conditions, loops, functions and practical scripts.

devopsintermediate03. 07. 2020

Prometheus Operator and kube-prometheus-stack

Prometheus Operator for Kubernetes monitoring. ServiceMonitor, PrometheusRule and Alertmanager configuration.

cloudintermediate23. 06. 2020

Sealed Secrets — Secrets in Git

Encrypted secrets for GitOps. Safely storing secrets in Git repositories.

cloudintermediate08. 06. 2020

Kubernetes CRDs — Custom Resource Definitions

Extending the Kubernetes API with custom resource types. CRD definitions, validation, versioning and best practices.

dataintermediate02. 06. 2020

Metabase — Open-Source BI for Self-Serve Analytics

Metabase is an open-source BI platform. Query builder, dashboards, and embedding.

developmentintermediate28. 05. 2020

Java 21 Virtual Threads

Project Loom — virtual threads for massive concurrency.

dataintermediate24. 05. 2020

Database per Service

Why each microservice should have its own database and how to handle cross-service queries.

dataintermediate12. 05. 2020

PostgreSQL EXPLAIN ANALYZE

Reading query plans — scans, joins, cost and optimization.

developmentintermediate11. 05. 2020

Design System with Web Components — Framework-Agnostic Approach

How to build a framework-agnostic design system using Web Components. Theming, slots, CSS custom properties and NPM...

developmentintermediate06. 05. 2020

React Concurrent Features — useTransition and useDeferredValue

Learn to use React concurrent features — useTransition, useDeferredValue and Suspense for smooth user interfaces...

developmentintermediate26. 03. 2020

Monolith vs Microservices

When monolith and when microservices — trade-offs and decision-making.

developmentintermediate14. 03. 2020

React State Management in 2025 — Zustand, Jotai, and Valtio

Comparison of modern state management libraries for React. Zustand, Jotai, Valtio — when to use which one and how...

architectureintermediate10. 03. 2020

The Complete Guide to Kafka

Apache Kafka — event streaming, topics, partitions, consumer groups.

developmentintermediate09. 03. 2020

CSS Cascade Layers (@layer) — End of Specificity Wars

CSS @layer brings control over style cascading. Learn to organize CSS into layers, resolve specificity conflicts and...

cloudintermediate07. 02. 2020

GitOps with Helm Charts

Helm charts in GitOps workflow. Chart design, values management, dependency management and automated upgrades.

dataintermediate05. 02. 2020

Analytics Engineering — The Role Between Data and Business

Analytics engineering bridges data engineering and business analytics. dbt, modelling and self-serve.

cloudintermediate14. 12. 2019

Azure Functions Tutorial

Serverless on Azure. HTTP triggers, bindings, Durable Functions.

cloudintermediate11. 12. 2019

Kubernetes Pod Lifecycle

Pod lifecycle in Kubernetes. Phases, init containers, probes, and graceful shutdown.

architectureintermediate14. 11. 2019

Microservices Patterns — A Complete Guide

Overview of the most important design patterns for microservice architecture. From decomposition to inter-service...

developmentintermediate07. 11. 2019

CSS View Transitions API — Smooth Page Transitions

View Transitions API enables smooth animated transitions between pages in both SPA and MPA. Learn cross-document...

developmentintermediate23. 10. 2019

Vue 3 Composition API

Composition API vs Options API. Reactivity, composables, lifecycle.

securityintermediate10. 10. 2019

Security audit checklist

Complete security audit checklist for web applications and infrastructure.

developmentintermediate02. 10. 2019

Python Virtual Environments

venv, virtualenv, conda. Why and how to isolate Python projects.

infrastructureintermediate28. 09. 2019

Apache vs Nginx

Comparing Apache and Nginx — architecture, performance, when to use which.

developmentintermediate14. 09. 2019

TypeScript from Scratch

How to get started with TypeScript. Types, interfaces, generics, configuration.

developmentintermediate13. 09. 2019

How to Choose Tech Stack for Startup

How to choose tech stack for startup — development speed, scalability, hiring.

securityintermediate01. 08. 2019

SAST Tools — Static Code Analysis

Semgrep, SonarQube, CodeQL. How to find vulnerabilities in code without running it.

dataintermediate03. 07. 2019

DuckDB — An Analytical Database Right in Your Notebook

DuckDB is an embedded OLAP database. Zero dependency, SQL over CSV, Parquet and JSON.

cloudintermediate20. 05. 2019

Docker vs Podman

Docker vs Podman — daemon, rootless, ecosystem, and migration.

developmentintermediate22. 04. 2019

Astro Islands — Partial Hydration Architecture

Astro Islands architecture enables selective component hydration. Learn client directives, React/Vue/Svelte...

infrastructureintermediate13. 04. 2019

Nginx as a Reverse Proxy

Nginx reverse proxy — load balancing, WebSocket, caching, rate limiting.

dataintermediate21. 03. 2019

MySQL vs PostgreSQL

Comparison of the two most popular open-source relational databases — performance, features, replication, JSON...

developmentintermediate15. 02. 2019

XSS Prevention — Cross-Site Scripting Protection

Stored, Reflected, and DOM-based XSS. Sanitization, CSP, encoding.

devopsintermediate08. 02. 2019

Grafana Tempo — Distributed Tracing

Grafana Tempo for distributed tracing. Object storage backend, TraceQL queries and Grafana stack integration.

securityadvanced06. 01. 2019

Incident Response Plan — How to Respond to a Security Incident

Procedure for security incidents. Preparation, detection, containment, recovery.

securityintermediate07. 09. 2018

Cloudflare Setup

Complete Cloudflare setup — DNS, reverse proxy, SSL, Page Rules, caching, and free DDoS protection.

developmentintermediate27. 06. 2018

JavaScript Modern Syntax (ES2024)

Latest JavaScript features. Array grouping, Temporal, decorators.

securityadvanced12. 05. 2018

mTLS in Practice

Mutual TLS authentication, certificates, and deployment.

developmentintermediate07. 05. 2018

Performance Debugging: Step by Step

A systematic approach to performance debugging — measurement, bottlenecks, optimization.

developmentintermediate16. 04. 2018

Docker: 10 Mistakes Every Beginner Makes

10 most common Docker mistakes and how to avoid them. From :latest tag to missing resource limits.

infrastructurebeginner04. 04. 2018

Nginx Configuration from Scratch

A complete guide to Nginx — installation, virtual hosts, SSL, performance.

cloudintermediate25. 02. 2018

AWS ECS — Container Orchestration

Elastic Container Service. Task definitions, services, Fargate vs EC2, service discovery.

architectureadvanced05. 02. 2018

Sharding Strategies

Horizontal data partitioning. Hash, range, consistent hashing.

developmentintermediate15. 01. 2018

FastAPI Tutorial — Modern Python API

How to build a REST API with FastAPI. Routing, validation, OpenAPI, async.

developmentintermediate10. 01. 2018

GDPR Compliance Checklist

GDPR compliance checklist for developers — consent, subject rights, technical measures.

securityadvanced27. 12. 2017

mTLS — Mutual TLS Explained

What is mutual TLS, when to use it and how to configure it.

developmentintermediate14. 11. 2017

SEO technical checklist

Technical SEO checklist — meta tags, sitemap, Core Web Vitals, structured data.

developmentintermediate05. 07. 2017

Pulumi — IaC in a Real Programming Language

Pulumi with TypeScript/Python, component resources, stacks and testing.

developmentintermediate11. 05. 2017

Git: How to Fix (Almost) Every Mistake

How to fix the most common Git mistakes — wrong commit, branch, lost changes.

architectureadvanced07. 05. 2017

Clean Architecture — Layers and Dependencies

Robert C. Martin's Clean Architecture. The dependency rule, entities, use cases, and implementation.

devopsintermediate28. 02. 2017

Jenkins — Modern Pipeline Patterns

Jenkins shared libraries, declarative pipeline, parallel stages and Kubernetes-based agents.

devopsintermediate10. 09. 2016

CI/CD Best Practices

Best practices for CI/CD pipelines. Speed, reliability, security.

developmentintermediate17. 08. 2016

API Testing Automation — Strategies and Tools

A complete guide to automated API testing. REST, GraphQL, gRPC — tools, strategies, mocking and CI/CD pipeline integration.

developmentintermediate20. 07. 2016

On-call Survival Guide

A practical guide to on-call — preparation, escalation, runbooks, postmortems.

infrastructureintermediate23. 02. 2016

CDN Configuration — Content Closer to the User

CDN configuration for web applications. CloudFront, Cloudflare, cache headers.

developmentintermediate19. 01. 2016

Backends for Frontends (BFF)

BFF pattern: a separate backend for each client type. Web, mobile, IoT — each has different needs.

developmentintermediate22. 06. 2015

Dependency Scanning — Vulnerability Detection

Trivy, Snyk, npm audit. How to find vulnerable libraries.