US Patent 8438474 Speculative rendering during cache revalidation

A method may include storing, in a memory associated with a computer device, cached content associated with a document and receiving a request to access the document. The method may further include sending a request to revalidate the cached content to a server device associated with the document, performing speculative rendering of the document, using the cached content, the speculative rendering being performed as a plurality of work items, receiving revalidated content associated with the document, determining invalid ones of the plurality of work items based on the revalidated content, and discarding the invalid ones of the plurality of work items.