What Happens Between @SqsListener and Your Method in Spring Cloud AWS SQS

Originally published at tomazfernandes.dev . You write a method, add @SqsListener , and messages start arriving. It is easy to see that as a simple annotation-to-method shortcut. In practice, Spring Cloud AWS SQS assembles a listener container at startup based on that annotation, and at runtime the container holds an async pipeline between the queue and your code. That pipeline controls how messages are polled, dispatched, processed, and acknowledged. It influences throughput, failure handling,