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JMS interview questions

!!! JMS interview questions !!!

Q. What is the difference between pub/sub and Point to Point i.e. p2p. ?

pub/sub ? Publish/Subscriber
Publish/Subscriber can have multiple Publisher who publish message and multiple Subscriber who subscribe the messages. This is like watching TV multiple channel and multiple users .
One message can have more then one subscriber.
All the publish messages have the header and subscriber consume the message based on the header.
In JMS we say Topic.
P2p ? Point to point
One message have only one subscriber. Multiple publisher can send multiple messages to the Queue but each message has only one subscriber.
In JMS we say Queue.

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