Disclosed is a program for pre-fetching resources. A computer, communicatively coupled to a plurality of client computers and a server computer, identifies a resource, through an examination of one or more HTTP server logs, that is cached on at least one of the plurality of client computers and has been validated by the server computer. The computer determines to pre-fetch the resource based on one or more predefined rules, at least one of the predefined rules including a threshold number of responses validating the resource that must be received by the computer. The computer pre-fetches and caches the resource from the server computer. The computer receives a request for the resource from a client computer that does not have the resource cached. The computer validates resource cached locally and sends the resource to the client computer from the local cache on the computer.

Intelligent edge caching

The present solution provides a variety of techniques for accelerating and optimizing network traffic, such as HTTP based network traffic. The solution described herein provides techniques in the areas of proxy caching, protocol acceleration, domain name resolution acceleration as well as compression improvements. In some cases, the present solution provides various prefetching and/or prefreshening techniques to improve intermediary or proxy caching, such as HTTP proxy caching. In other cases, the present solution provides techniques for accelerating a protocol by improving the efficiency of obtaining and servicing data from an originating server to server to clients. In another cases, the present solution accelerates domain name resolution more quickly. As every HTTP access starts with a URL that includes a hostname that must be resolved via domain name resolution into an IP address, the present solution helps accelerate HTTP access. In some cases, the present solution improves compression techniques by prefetching non-cacheable and cacheable content to use for compressing network traffic, such as HTTP. The acceleration and optimization techniques described herein may be deployed on the client as a client agent or as part of a browser, as well as on any type and form of intermediary device, such as an appliance, proxying device or any type of interception caching and/or proxying device.

Systems and methods of prefetching objects for caching using QoS

Systems and methods of revalidating cached objects in parallel with request for object

The present solution provides techniques that may accelerate and optimize network traffic in the areas of proxy caching, protocol acceleration, domain name resolution acceleration, and compression improvements using prefetching and/or prefreshening techniques to improve intermediary caching. Techniques described herein may improve the efficiency of obtaining and servicing data from originating servers to requesting clients and accelerates domain name resolution. The present solution may further help accelerate resolution of URLs into IP addresses. The present solution may improve compression techniques by prefetching non-cacheable and cacheable content to use for compressing network traffic, such as HTTP. The acceleration and optimization techniques described herein may be deployed on the client as a client agent or as part of a browser, as well as on any type and form of intermediary device, such as an appliance, proxying device or any type of interception caching and/or proxying device.

Systems and methods of prefreshening cached objects based on user's current web page

The present solution provides a variety of techniques for accelerating and optimizing network traffic, such as HTTP based network traffic. The solution described herein provides techniques in the areas of proxy caching, protocol acceleration, domain name resolution acceleration as well as compression improvements. In some cases, the present solution provides various prefetching and/or prefreshening techniques to improve intermediary or proxy caching, such as HTTP proxy caching. The acceleration and optimization techniques described herein may be deployed on the client as a client agent or as part of a browser, as well as on any type and form of intermediary device, such as an appliance, proxying device or any type of interception caching and/or proxying device.

Systems and methods of using the refresh button to determine freshness policy

A facility for determining whether to consistency-check a cache entry is described. The facility randomly or pseudorandomly selects a value in a range. If the selected value satisfies a predetermined consistency-checking threshold within the range, the facility consistency-checks the entry, and may decide to propagate this knowledge to other cache managers. If, on the other hand, the selected value does not satisfy the consistency-checking threshold, the facility determines not to consistency-check the entry.

Probabilistic technique for consistency checking cache entries

PROBLEM TO BE SOLVED: To provide a method for maintaining freshness of cache entries.SOLUTION: A method for managing a cache comprises: receiving a request for an object; if the cache has a version of the object where the cache is cached and a minimum lifetime belonging to the cached version of the object is not expired, using the cached version of the object to respond to the received request; and, if the minimum lifetime belonging to the cached version of the object is expired but the maximum lifetime belonging to the cached version of the object is not expired, determining probabilistically whether acquiring a current version of the object or using the cached version of the object.

Nevil A. Shah

Papers

Probabilistic technique for consistency checking cache entries

Probabilistic technique for checking consistency of cache entries