Patent Document ID: 9111003
Application ID: 12846663

Base Claim:
1. A method for efficiently identifying dynamic content of a webpage, the method comprising: (a) accessing, by a virtual browser of a plurality of virtual browsers executing on a device intermediary to a plurality of clients and a plurality of servers a first stored data file representing a first version of a web page and a first abstract syntax tree corresponding to the first stored data file, the abstract syntax tree comprising at least one static node, the static node including stored content; (b) identifying, by the virtual browser of the plurality of virtual browsers, non-matching dynamic content between the first stored data file and a second data file representing a second version of the web page without using a second abstract syntax tree corresponding to the second data file; and (c) replacing, by the virtual browser, the at least one static node corresponding to the non-matching dynamic content in the first abstract syntax tree with a token that identifies the portion of the abstract syntax tree containing the non-matching dynamic content.

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Claim 10:
10. The method of claim 1 , wherein step (c) further comprising storing, by the virtual browser, the first abstract syntax tree.