This article explains the concept of RabbitMQ dead‑letter queues, the three conditions that turn a message into a dead letter, how to configure DLX and routing keys in Spring Boot, common pitfalls, a classic order‑timeout use case, and typical interview follow‑up questions.
This article explains what dead letters are in RabbitMQ, outlines their common causes, and provides a complete Spring Boot configuration and code examples for setting up dead‑letter exchanges, queues, TTL handling, message rejection, and consumer processing to reliably manage undeliverable messages.
This article explains how to implement scheduled tasks in a Spring Boot application using RabbitMQ delayed queues, detailing the use of dead‑letter exchanges, message TTL settings, queue configuration, and Java code examples for publishing and consuming delayed messages.
This article explains why RabbitMQ delayed messages stop working when the delay exceeds a specific limit, demonstrates the issue with practical curl tests, and provides the exact TTL boundary (4294967295 ms) you must respect to ensure reliable scheduling.
