48-Hour Field Notes: My Replay Cassette Kept Passing While the Live Call Failed
This story is from 2026-10-18. It is preserved in the archive; the latest stories are on the live feed.
My test suite was green for eleven hours while the same code failed in production, and that contradiction is the whole story here. I had built a record-and-replay harness for LLM-backed functions so my tests would stop depending on a live call. What I did not anticipate was that the harness itself…
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- 2026-10-18 17:51 · DEV Community — AI
48-Hour Field Notes: My Replay Cassette Kept Passing While the Live Call Failed