The Background Queue Publisher is new in Aspire 4.0 and allows processing of items that have been published to an Aspire queue for later processing. Background processing uses the same distributed queues (held in noSQL) as used in the connector framework. The Background Processing Connector is, in fact, a cut down version of connector framework, with no “scan” method, since the scanning is done elsewhere. The interaction of the connector framework and background processing can be seen below: