@SQSListener annotation how to have different parallel reading threads

[peeteko]

We use in our spring boot project a few classes with methods with a @SQSListener annotations. I would like that some methods have a higher number of reading threads and other a lower number of reading threads
I think we can use maxConcurrentMessages
https://docs.awspring.io/spring-cloud-aws/docs/3.2.0/reference/html/index.html#other-annotation-properties

What is the exact syntax to add this in the annotation. How do you specify the property maxConcurrentMessages

@SqsListener("${queueu1}")
public void processQueu1(){

@SqsListener("${queueu2}")
public void processQueu2(){

[tomazfernandes]

Hey @peeteko, I'm not sure I understand your question, but yes, you can use maxConcurrentMessages in the annotation to control how many messages will be processed in parallel for each queue.

That's not exactly the same as controlling how many polling threads you have - the framework uses non-blocking logic behind the scenes and controls how many concurrent polls each queue will have according to how many concurrent messages you want to process.

Example:

@SqsListener(queues = "${queueu1}", maxConcurrentMessages="100")

@SqsListener(queues = "${queueu2}", maxConcurrentMessages="10")

Does that answer your question?