Marc-André BombeckandClaude Opus 4.7 9766cedea4 feat(api): generic Idempotency-Key support for safe POST retries ...

Introduces `withIdempotency()` in `src/lib/idempotency.ts` — wraps a
mutation handler so that a POST/PUT/PATCH/DELETE carrying an
`Idempotency-Key` header is replayed from the cached response instead of
running twice. Cache row is keyed by `(userId, key, method, path)` with
24h TTL; replays carry `X-Idempotent-Replay: true` so callers can
distinguish them.

Applied to the three mutation endpoints most exposed to client retries:
  • POST `/api/measurements`
  • POST `/api/mood-entries`
  • POST `/api/medications/[id]/intake`

Without the header: zero behaviour change. Existing clients that don't
send the header simply skip the cache lookup.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-03 21:53:02 +02:00

..

[id]

i18n: migrate from German-first to English-first default locale

2026-03-12 21:31:48 +01:00

route.ts

feat(api): generic Idempotency-Key support for safe POST retries

2026-05-03 21:53:02 +02:00