We propose to add an API in the JPPF client to receive notifications of queue events on the client side: whenever a job is added to the queue (submitted) or removed (execution completed). The corresponding listener/event APIs should provide information on the queue itself and its content, for instance a snapshot of the jobs currently in the queue.

One possible use would be to implement pluggable strategies for automatic management of the connection pools sizes, to help handle varying client workloads. See related Feature request JPPF-234 - Change the size of client connection pools dynamically