Docs¶

This is my Digital Garden — a knowledge base for QA and Test Automation Engineers, built around best practices, practical guides, and real implementation examples.

Browse topics below, use the sidebar or press Ctrl+K to search.

Architecture & Design¶

API Architectures ¶

REST, GraphQL, gRPC, WebSocket, cross-cutting concerns, architecture decision factors

Client–Server Architecture ¶

Core model, edge layer, traffic/service mesh, connections, scalability, reliability, …

Software Design Patterns and Principles ¶

OOP, SOLID, DRY/KISS, clean code, creational/structural/behavioral patterns, architecture, …

Agentic AI Architecture ¶

Agent fundamentals, multi-agent patterns, memory/RAG, vectorless RAG, tool integration, …

AI Skills for Coding Agents ¶

SKILL.md standard, universal standard (2026), practical playbook, …

AI Harness ¶

Agent harness and eval harness: agent loop, context, tools, guardrails, graders, pass@k vs pass^k, eval tools, CI, Jev

Spec-Driven Development ¶

Specs for AI coding agents: workflow, writing specs, EARS, Spec Kit, Kiro, OpenSpec, acceptance criteria → tests

Security¶

Code Security ¶

Secrets leak prevention, dependency hardening, SAST, auth patterns, security headers, …

OWASP API Security ¶

API Top 10 (2023), per-risk controls, OAuth2/webhooks/gateway, testing checklist, …

OWASP LLM Security ¶

LLM Top 10 (2026), prompt injection, output handling, agent/tool security, RAG hardening, …

QA & Testing¶

QA & Testing Methodology ¶

Fundamentals, test design, execution, defects, automation/SDLC, metrics, TDD/BDD, …

Test Design Techniques ¶

EP, BVA, Decision Table, State Transition, CRUD, Metamorphic, Pairwise, Fuzz testing

Test Design Patterns in Test Automation ¶

POM, Screenplay, Data Builder, API test patterns, mocking, execution, reliability, CI/CD

Testing Pyramid ¶

Unit / Integration / E2E strategy, common mistakes per level, anti-patterns

Test Automation Framework ¶

Architecture, UI/API patterns, test data, parallel execution, flakiness, mocking, CI/CD

Robot Framework ¶

Syntax, keywords, API/UI testing, parallel execution, CI/CD, scalability, anti-patterns

DeepEval — LLM Testing Guide ¶

DeepEval: RAG / quality / agent / chatbot / MCP metrics, conversational RAG, red teaming, …

Performance Testing ¶

Load / stress / spike / soak testing, core metrics, Locust, bottlenecks, monitoring, …

Python Guide ¶

Complete Python base for Automation QA: fundamentals, OOP, pytest, API/UI automation, …

Jenkins Guide ¶

Jenkinsfile syntax, declarative vs scripted, agents, stages, credentials, parallel, …

Infrastructure & Tools¶

CI/CD ¶

Pipeline architecture, build/artifacts, testing, deployment, security, release, …

Databases ¶

Database types and selection guide, PostgreSQL: commands, schema, queries, performance, …

PostgreSQL

Tools ¶

Docker, Git, Linux Terminal, Kubernetes, Phoenix, Langfuse, MLflow, Jaeger — commands, best practices, LLM tracing and evaluation, distributed tracing

Python Libraries ¶

Requests, HTTPX, Pytest, Playwright, Pydantic, SQLAlchemy, FastAPI, Jinja, uv, LangChain, LangGraph, LiteLLM, Guardrails AI, OpenTelemetry, …