Automatic cache synchronization
First Claim
1. In a computer system, a method for synchronizing content with content stored in a cache, comprising the steps of, receiving a request for content, at least part of the requested content corresponding to data in the cache, determining a synchronization time for the content based on a confidence level therefor, and if a current time is before the synchronization time, returning data from the cache in response to the request.
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Accused Products
Abstract
A method and system for reducing the number of conditional requests for network content to a server by maintaining state for selected URIs in a local cache indicative of a confidence level that the files are unchanged. When a request for content is received that corresponds to such a URI in the cache, a synchronization time is determined based on a confidence level for that URI. If the synchronization time is achieved, a conditional request is sent to the server, otherwise the URI data is returned from the cache to respond to the request. Synchronization intervals for such files may be increased as the likelihood that the item is unmodified increases. URIs may need to be of a certain content type and required to pass a confidence test before being selected for automatic synchronization.
250 Citations
41 Claims
- 1. In a computer system, a method for synchronizing content with content stored in a cache, comprising the steps of, receiving a request for content, at least part of the requested content corresponding to data in the cache, determining a synchronization time for the content based on a confidence level therefor, and if a current time is before the synchronization time, returning data from the cache in response to the request.
- 17. In a computer system, a method for synchronizing network content with content stored in a cache, comprising the steps of, receiving a request for content, at least part of the requested content corresponding to data in the cache, determining a synchronization time for a URI based on a confidence level for the URI, and if the synchronization time is achieved, sending a conditional request to a server for the content, and if the synchronization time is not achieved, returning data from the cache in response to the request.
- 36. In a computer system, a system for synchronizing network content with content stored in a cache, comprising, a network interface for receiving a request for content, a cache manager component for determining that at least part of the requested content corresponds to data in the cache, a storage for maintaining a confidence level for the URI, and an automatic synchronization mechanism for accessing the storage to determine a synchronization time for the URI based on the confidence level therefor, the interface responding to the request by sending a conditional request to a server for the content if the synchronization time is achieved, and returning data from the cache if the synchronization time is not achieved.
Specification