초록 ▼

A server computer identifies a cached document and its associated cache update history in response to a request or in anticipation of a request from a client computer. The server computer analyzes the document's cache update history to determine if the cached document is de facto fresh. If the cache

A server computer identifies a cached document and its associated cache update history in response to a request or in anticipation of a request from a client computer. The server computer analyzes the document's cache update history to determine if the cached document is de facto fresh. If the cached document is de facto fresh, the server computer then transmits the cached document to the client computer. Independently, the server computer also fetches an instance of the document from another source like a web host and updates the document's cache update history using the fetched instance of the document.

대표청구항 ▼

What is claimed is: 1. A computer-implemented method, comprising:at a server computer with memory and one or more processors,in response to a request, received from a client computer, for a document:identifying a cached instance of the document stored at the server and a cache update history associa

What is claimed is: 1. A computer-implemented method, comprising:at a server computer with memory and one or more processors,in response to a request, received from a client computer, for a document:identifying a cached instance of the document stored at the server and a cache update history associated with the document;identifying from the document's cache update history a set of previous document requests for the document, a corresponding set of document request parameters and a plurality of header values that have been assigned to each document request parameter; andin accordance with a determination that for the set of previous document requests for the document the content of the document has been the same regardless of which header value was assigned to each document request parameter and that the cached instance of the document is deemed fresh according to the document's cache update history:transmitting the cached instance of the document from the server computer to the client computer and fetching a new instance of the document from a host; andupdating the document's cache update history using the fetched instance of the document.