Dochia Blog

blog.dochia.dev

Practical Dochia articles on API testing, negative testing, reliability, backend edge cases, and resilient system design.

Popular posts: 1
Total points: 335
HN comments: 218
Rank: #3,959 company

Visit blog.dochia.dev → RSS feedOn Hacker News May 2026 – May 2026

Systems & Performance 1 Software Engineering 1

Most points Most discussed Most cited Newest

Idempotency is easy until the second request is different

2026335 points218 comments Software Engineering details

Idempotency is not just an HTTP header or a key lookup. This article covers the failure cases that bite real APIs: different requests with the same key, concurrent retries, partial success, downstream uncertainty, response replay, expiry, and duplicate message handling.