Predictive pre-download of a network object
A method for enabling pre-downloading of network objects to a web client from a web server is described. The method includes intercepting at a device a request from a web client to a web server for a first network object. The same device intercepts a response to the request from the web server. The device determines a second network object most probable to be requested in the future from the web server. Subsequently, a message is sent from the device to the web client the first message informing the web client of the second network object to be cached by the web client. A second message is sent from the web client requesting the second network object. The second network object is received and predicatively pre-downloaded into a cache whereby a latency for requesting the second network object is reduced when requested in response to an actual user request.
1. A method for enabling predictive pre-downloading of network objects to a web client from a web server on a network, the method including steps of:
intercepting at a device a request from the web client to the web server for a first network object;
intercepting at the device a response to the request from the web server;
determining at the device a second network object most probable to be requested in the future from the web server;
sending a first message from the device to the web client informing the web client of the second network object to be cached by the web client
sending a second message from the web client requesting the second network object in response to the web client receiving the first message; and
receiving the second network object at the web client such that the second network object is predicatively pre-downloaded into a cache by the web client whereby a latency for requesting the second network object is reduced when requested in response to an actual user request.
2. The method of claim 1 wherein the first message comprises the response including the first network object and a hint identifying the determined second network object most probable to be requested.
3. The method of claim 2 wherein the hint comprises a Uniform Resource Locator (URL) pointing to the second network object.
4. The method of claim 1 wherein the determining step comprises communicating with a statistics server, separate from the web server, that maintains policy rules and statistics regarding a set of request pairs for network objects, the request pairs indicating transitions between one network object and another network object.
5. The method of claim 4 wherein the determining step comprises determining the second network object most probable to be requested in the future from the web server based on a match between a maintained policy rule and the requested first network object, the maintained policy rule comprising request pairs indicating transitions between important network objects.
6. The method of claim 4 wherein the determining step comprises determining the second network object most probable to be requested in the future from the web server based on a match between statistics and the requested first network object, the statistics comprising a web-side model database of regular expressions constructed in response to prior incoming messages.
7. The method of claim 6 wherein the determining step comprises utilizing a finite state machine to detect whether first network object possibly matches a regular expression in the web-side model database.
8. The method of claim 4 wherein the maintained policy rules comprise information selected from a group consisting of: information about categories of users, demographic information, and past behavior of specific users at a web site.