Posts

Introducing Retrofit, a CLI that records database schema evolution as logical, identity-preserving operators instead of hand-written DDL migrations.

Notes on the current LLM development toolchain I am using in June.

Evidence-based iteration on the RDR specification-first workflow: indexing research and Claude Code sessions in Arcaneum to mine and formalize the patterns I was already applying by hand.

17 RDR postmortems, 208 drift instances, one meta-lesson: specify interfaces not implementations, verify APIs against source code, and plan for the full scope including Day 2 ops.

Building Arcaneum using specification-first LLM development with RDRs, writing dozens of specs before a single line of Python code.

Introducing RDRs - specification documents that evolve during planning to prevent purpose drift and wasted implementation effort.

AWS API Gateway with AWS AppRunner, an under-documented integration.

Exporting CloudWatch logs via the CreateExportTask.

Names of things can collide with other things.

Faster CloudFormation stack updates, via the Java CDK, by using ordered Maps.