You can improve server performance by reusing the same Integration Server session each time an MQTT trigger invokes a service. When you reuse sessions, you reduce the amount of overhead Integration Server requires for a service invocation.

Each service invocation with the reused session uses the same session ID. You cannot reuse sessions with services that require a unique session ID.

You can configure all MQTT triggers to reuse Integration Server sessions by setting the watt.server.commonmessaging.trigger.reuseSession server configuration parameter to true. By default, this parameter is set to false.