https://blogs.rameskum.com/tags/api/Recent content in Api on 1Stophttps://blogs.rameskum.com/images/og-default.pnghttps://blogs.rameskum.com/images/og-default.pngHugoen-usFri, 25 Sep 2026 09:20:00 -0400https://blogs.rameskum.com/posts/idempotency-keys-spring-boot-stripe-style/Fri, 25 Sep 2026 09:20:00 -0400https://blogs.rameskum.com/posts/idempotency-keys-spring-boot-stripe-style/Retried POSTs double-charge customers. Stripe solved it with the Idempotency-Key header — build the same thing in Spring Boot: DB-backed key store, request fingerprinting, race-safe claiming, response replay, and TTL cleanup, with tests.