Writing a CLAUDE.md That Actually Helps
Most CLAUDE.md files I see are either empty or a dumping ground.
// software development journal
Hi, I'm Tung Quach ✦
Cozi is a place where I share my software development journey, exploring programming languages, frameworks, design patterns, and more.
Recent posts
All posts →Leveling Up Claude Code with Superpowers
A while back I wrote about spec-driven development with Spec Kit, which fixed the “the agent built the wrong thing” problem by making me …
Spec-Driven Development with GitHub Spec Kit
I have been using AI coding agents long enough to know the failure mode by heart.
Monitoring and Distributed Tracing with Grafana, Prometheus, Loki & Tempo
Why I Built a Small Observability Stack Over the last few years, my systems have become more distributed: multiple services, containers, and external …
Serving AWS S3 private content with Golang and AWS SDK for Go v2
Have you ever wanted to serve private files from your AWS S3 storage to your users, but making the bucket public is not a safe option?
Setting up a virtual environment with Vagrant for testing
In the world of software development, testing is a critical aspect of ensuring the reliability and functionality of your applications.