Under the present invention, a request for a Uniform Resource Locator (URL) is received from a client on a server. Upon receipt, a corresponding session object is obtained, and a response identifier is generated. Based on the response identifier, it is determined whether the URL was previously requested...http://www.google.de/patents/US7349968?utm_source=gb-gplus-sharePatent US7349968 - Method, system and program product for asynchronously processing requests
