In Memory Message Store

In Memory Message Store is the default Message Store that will be created if user does not specify any implementation from the configuration. Messages will be stored in an in-memory queue. So in case of a ESB restart, all the messages stored will be lost.

In Memory Message Store is lot more faster than any persistence message store implementations. So it can be used as a temporary storage of messages for use cases such as implementation of high speed store and forwarded patterns where message persistence is not a requirement.