A data center (14) receives a request (22) for content from a browser (12)
on a client (11). The data center determines whether the requested
content is available at the data center. The content is available when
the content is both present at the data center and current. The content
may be expired and marked as non-available in response to an expiration
command (24). When the requested content is available at the data center,
the data center returns the requested content to the data center. When
the requested content is locally unavailable at the data center, the
requested content is retrieved from an origin server (18). The retrieval
of the content from the origin server may be delayed based on the
processing load at the origin server. When retrieval of the content is
delayed, the request is prioritized and placed in a queue for handling by
the origin server based on the priority of the request. Also, when
retrieval of the content is delayed, a status page may be communicated to
the browser to inform a user of the delay and provide alternate content
(139) and status information related to the request determined as a
function of the request or the current state of the origin server.