As of version 4.5 eZ Publish is set up with a new and improved system, eZ Asynchronous Publishing, for deferring publishing requests to a queue for asynchronous handling of the published objects. The feature aims at increasing the number of objects that can be published concurrently. This is typically a function used in an advanced environment with a large simultaneous load on the database.

A daemon handles the publishing requests and the queue in the background. As a user you will only get information as to the status of your published objects, all processing of the queue is  automatic and no user interaction/intervention is possible.

Feature limitation: The asynchronous publishing is not supported on the Windows platform.