asmhatre/spring-boot-demo
1
0
Fork 0
Code Activity

Add idempotency module: Idempotency-Key for POST APIs on Spring Boot 4.1.2 with Redis and Postgres stores

Browse Source 
One servlet filter, two interchangeable stores, 18 tests (9 scenarios x 2 stores) against a real
redis-server 7.0.15 and PostgreSQL 16.15, and 20 captured transcripts under output/: replay, 422 on a
changed body, concurrent duplicates, expiry, the crash window and a handler slower than the lock.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b5yg8grY17JsVAJviV
This commit is contained in:
asmhatre
2026-11-08 18:22:05 +00:00
co-authored by Claude Sonnet 5.5
parent 8da3374155
commit 6a36e84858
44 changed files with 1459 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
idempotency/output/07-crash-window-redis.txt
+7
View File
@@ -0,0 +1,7 @@
store: redis, in-progress ttl: 2 s
attempt 1 (process dies after the write) -> HTTP 500 replayed=- retry-after=- {"timestamp":"2026-11-08T18:16:50.214Z","status":500,"error":"Internal Server Error","path":"/payments"}
payments in the table: 1
attempt 2, immediately -> HTTP 409 replayed=- retry-after=1 {"title":"A request is outstanding for this Idempotency-Key","status":409}
payments in the table: 1
attempt 3, after the lock expired -> HTTP 201 replayed=- retry-after=- {"id":2,"customer":"cus_42","amount":1999,"currency":"INR"}
payments in the table: 2