Tagged articles

Message Idempotency

2 articles · Page 1 of 1

May 25, 2026 · Backend Development

Ensuring SpringBoot Message Idempotency to Prevent Duplicate Consumption

The article analyzes why duplicate consumption is inevitable in MQ systems, defines message idempotency, and presents four practical solutions—including Redis SETNX, database unique indexes, state‑machine with optimistic locking, and global unique constraints—along with their pros, cons, and best‑practice guidelines for SpringBoot applications.

JavaMQMessage Idempotency

0 likes · 13 min read

Ensuring SpringBoot Message Idempotency to Prevent Duplicate Consumption

Architect

Feb 14, 2021 · Backend Development

Message Idempotency and Exactly‑Once Processing in RocketMQ

This article explains why message middleware like RocketMQ guarantees at‑least‑once delivery, the resulting duplicate‑delivery problem, and presents both transaction‑based and non‑transactional idempotency solutions—including select‑for‑update, optimistic locking, and a Redis‑backed deduplication table—to achieve exactly‑once semantics in distributed systems.

DeduplicationExactly-onceMessage Idempotency

0 likes · 16 min read

Message Idempotency and Exactly‑Once Processing in RocketMQ