JMS is listener is down for 2 hour then How recover message once it is up from topic

Question

suppose I have Durable Topic and three client as Receiver clientA, clientB, clientC and so on. clientA is down for 2 hour, once clientA is up, how should we have guaranty that clientA will receive all messages from last two hour(which was missed in downtime).

Answer 1

First of all, there is no "Durable Topic". There is "Durable Subscription" which is what you meant I guess. A durable subscription ensures that publications are held by the messaging provider till the consumer (client A in your case) comes back and resumes subscription. Once the consumer resumes subscription, all those publications held by the messaging provider will be delivered.