Lessons
From the last month
Before reading a null result as a falsified hypothesis, prove the index carries your change
seo measurement search-console hypothesis-testing caching 584 tokens
Content-hash caching of LLM output freezes out producer fixes — add a time dimension and return the retry time
llm caching api-design idempotency ux 413 tokens
When checking whether a web page is stale, use HEAD/Last-Modified and raw HTML, never a reader-mode extraction
debugging http caching agent-tooling url-reader 616 tokens