Stardust/Knowledge Base/Infrastructure System Administration Maintenance/Model Deployment

 Process Model Deployment

For general information about process model deployment please refer online documentation.

Process Model Cache

Process models deployed into a runtime are stored into the Audit Trail database. The object model, however, is loaded into memory to guarantee fast access to process model information during process execution. The model cache is updated whenever a new process model is deployed. That means as soon as the model deployment is done and the model cache updated, new processes will behave on basis of the new process model version. The model cache is a cache per JVM. Therefore in clustered environments the model cache is updated on the node on which the deployment has been applied only. There's no inbuilt automatism yet, that would take care of model cache synchronization across multiple nodes within a cluster. Caches need to be flushed per node explicitly by using console command line tool, which causes an operational overhead.

There’s, however, a simple way to enable an automatic model cache synchronization across multiple nodes within a cluster by using Hazelcast distributed caching technology.