Golang Advanced

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What you'll build

You upgrade the SQLite-backed CRUD API from Intermediate into a production-ready REST service with PostgreSQL, JWT authentication, HTTP middleware, Docker deployment, integration tests, and CI/CD. By the end you have a containerized API running against PostgreSQL with auth, rate limiting, graceful shutdown, and benchmarks.

Prerequisites

• Complete the Intermediate tier (SQLite CRUD /items API)
• Docker installed (docker --version) — see the Docker appendix if you're new to Docker
• Go 1.22+

The ladder

1. 01 Why PostgreSQL — SQLite limits in production
2. 02 Migrate to PostgreSQL — pgx, connection pool, schema
3. 03 HTTP middleware — logging, request ID, recovery
4. 04 JWT auth middleware — sign and verify tokens
5. 05 Rate limiting — per-IP token bucket
6. 06 Docker multistage — Dockerfile + docker-compose with Postgres
7. 07 Integration tests — Testcontainers for Postgres
8. 08 Benchmarks and profiling — pprof, benchmarks
9. 09 Graceful shutdown — signal handling, context cancel
10. 10 CI/CD GitHub Actions — lint, test, build, push, deploy

Start → 01 Why PostgreSQL