The OCaml Planet

Building a comprehensive database testing suite for Chaufr: integration tests, transaction verification, migration rollback testing, connection pool stress tests, and performance benchmarks using Alcotest, Lwt, and Caqti

If you haven’t discovered the Apache Parquet file format, allow me to introduce it along with ClickHouse.

Yesterday I wrote about the amazing performance of Apache Parquet files; today I reflect on how that translates into an actual application reading Parquet files using the OCaml wrapper of Apache’s C++ library.

FreeBSD Jails provide isolated system containers that are perfect for CI testing. Miod ported OBuilder to FreeBSD back in 2023. I have been looking at some different approaches using unionfs.

I’ve been largely steering clear of the AI bandwagon up to now, mainly because the last thing I needed while working on Relocatable OCaml was to be trying to learn a new tool at the same time as finishing something which felt desperately late and which, at times, I myself didn’t fully understand! However, as the buzz of the announcement dies down, I had a first go at pointing Claude Code to the OCaml compiler codebase, and thought I’d add to the general noise of AI memoirs…

If you give vapourware long enough, it condenses into an actual ware! An idea hatched between rehearsing Handel arias in the outskirts of Munich just over six years ago to make running OCaml’s programs a little less surprising is now 132 commits of reality.

Implemented a production-minded database migration system for Chaufr: CLI, tracking, checksum validation, rollback, and safe SQL execution.