Documenting my journey through Golang, TypeScript, and Distributed Systems.

Use LangGraph PostgresSaver to automatically persist agent state across requests, eliminating manual history management with built-in checkpoint tables.

Add persistent conversation memory to LangGraph agents by loading chat history from PostgreSQL before classification, enabling personalized responses across sessions.

Create a production-ready customer support agent using LangGraph for workflow orchestration, conditional routing, structured output with Pydantic, and confidence-based escalation.

Step-by-step fixes that took our Next.js e-commerce site from mediocre Lighthouse scores to near-perfect 98/100/96/100. Real code changes, real results.

Create an interactive terminal assistant using LangChain with Claude, custom tools for math, Wikipedia, time, and crypto prices, plus persistent chat history across turns.

Create a complete Retrieval-Augmented Generation pipeline using PostgreSQL pgvector for semantic search, Ollama for local embeddings, and Claude for answer generation.

How to use the VS Code Git Worktrees extension with .worktree.yml lifecycle hooks to automate tmux sessions for Claude Code parallel development workflows.

Build robust integration tests using testcontainers-go to spin up real PostgreSQL and Redis instances. Covers test isolation, migrations, and cleanup patterns.

Practical patterns for unit testing Go services using mockery-generated mocks, table-driven tests, and testify assertions in a clean architecture codebase.

Real benchmarks on 24.5M rows showing how TimescaleDB continuous aggregates deliver 10x-3,600x speedups for OHLCV candlestick data compared to PostgreSQL with application-side aggregation.

Real benchmarks showing how we reduced CI time from 165s to 15s by replacing Jest, ESLint, webpack, and tsc with modern Rust-based alternatives.