March 2011
Intermediate to advanced
408 pages
13h 27m
English
Content preview from ActiveMQ in Action
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Chapter 5. ActiveMQ message storage
This chapter covers
- How messages are stored in ActiveMQ for both queues and topics
- The four styles of message stores provided with ActiveMQ
- How ActiveMQ caches messages for consumers
- How to control message caching using subscription recovery policies
The JMS specification supports two types of message delivery: persistent and nonpersistent. A message delivered with the persistent delivery property must be logged to stable storage. For nonpersistent messages, a JMS provider must make best efforts to deliver the message, but it won’t be logged to stable storage.
ActiveMQ supports both of these types of message delivery and can also be configured to support message recovery, an in-between state where ...
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