Idempotency keys, and the bugs they delete
Retries are not an edge case — they are the normal operating condition of any network. Designing for them turns a whole category of duplicate-record bugs into something that cannot happen.
Backend4 min read
Blog
Writing
Working notes on things I had to figure out — bundle budgets and Server Components, idempotency and observability, content models that editors actually use, and where LLM cost really goes.
Logs are for searching, not for reading
Most logging is written as if a human will scroll through it during an incident. Nobody does. The question a log line has to answer is whether you can find it at 3am when you don't know what you're looking for.
Backend4 min read