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about JMS......Need Help

 
gopal kishan
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hi,

i have a doubt in JMS.

if the sender sends the message using pub/sub, suppose if the receiver is not available, then what will happen??

2) suppose sender want to rollback the message, how can he do??

pls let me know........


thanks
 
Valentin Tanase
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Hi Gopal,


if the sender sends the message using pub/sub, suppose if the receiver is not available, then what will happen??

The message will be sent to the topic and will stay there until either the subscribers receive it or the message time to live expires, the server shuts down (for nondurable subscriptions) or the topic is deleted.

suppose sender want to rollback the message, how can he do??

You can use transactions with jms as well. JMS supports two types of transactions: transacted sessions and JTA transactions.
Regards.
 
gopal kishan
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hi,

Thanks for your reply..

then what is the difference between Topic and Queue.

because if the receiver is not available then the message stay in Topic and Queue also.

then what is the difference between topic and queue

it is right???
 
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