IBM BJ0NJML Integration Guide - Page 207
WebLogic Server Continuous Queue Cluster
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JMS Queues Unlike the continuous queue, there is no multi-threading of messages. A cluster implementation does not significantly impact the processing performance of messages that are processed through the sequential queue. WebLogic Server Continuous Queue Cluster The following diagram shows one example of a cluster configuration on the WebLogic Server. The continuous queue receives JMS producer messages and processes the JMS consumer messages. Cluster Configuration In the example, three application servers exist in the clustered environment. The continuous JMS queue is pinned to one member of the cluster. The processing occurs when the integration framework receives enterprise service messages by using HTTP, enterprise beans, and SOAP actions. The load balancer directs the application server to drop enterprise service messages into the continuous queue. Each member of the cluster places messages into the queue, which exists on one member of the cluster. An integration cron task delivers enterprise service messages from flat or XML files and interface tables. The cron tasks that place messages into the queue can run on any server in the cluster. 193
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