CODEWITHSUNDEEP
javajmsactivemq-classic
Shalabh
Shalabh

Reputation: 797

JMS Queue : Multiple Threads to read


I have a java program that puts down into the queue on the other side of the queue, i do have 10-15 consumers; any ONE of which should read the message and process it. If any of the 10-15 consumers get free they pick up the next message from the queue.



Basically, a Consumer can pickup the message from the queue whenever it is free, and only one consumer must pick it up. (without any synchronization blocks or so).
Also on the sender's end can i pause sending the messages into the queue if the queue sizes becomes full(or reaches a certain threshold)?


I am really new to the JMS API. Apologies if this is a newbie question .


Thanks!!

Upvotes: 0

Views: 2775

Answers (1)

eis
eis

Reputation: 53553

I have to Send messages into a queue and i have 20 threads running as consumers, who can pick up the data from the queue(once they are free). so when each thread gets free it goes to the queue checks if the data is there it picks up and so on.. is this doable?

Yes, it's doable - that's the standard process of doing it with JMS queues. Another alternative would be topics, but with topics, every listener would have to process the same message, not just one, so queues are what you want. Although usually you don't have threads as consumers (I'm not even sure what that means), but message-driven beans. You might consider using them. MDBs run in their own thread anyway.

Upvotes: 1

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