11. The system of claim 10 , wherein triggering at least one asynchronous update function includes triggering an on-demand update algorithm for determining operations to be executed upon receiving the request for metadata.
11. The system of claim 10 , wherein triggering at least one asynchronous update function includes triggering an on-demand update algorithm for determining operations to be executed upon receiving the request for metadata. 12. The system of claim 11 , wherein triggering an on-demand update algorithm includes: determining a previously established customized staleness setting for the content group container; determining a timestamp for the requested metadata residing in the content group container; and comparing the timestamp of the metadata residing in the content group container to the customized staleness interval.