93 results about "Proxy cache" patented technology

Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories, compression history indexes and caches across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.

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.

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.

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.

A method and computing systems for refreshing objects stored by a Proxy cache server from Web content servers. The refresh is requested by the Proxy cache server only if the expiration date attached to a stored object has expired. The refresh of one object is requested by the Proxy cache server to the Web content server upon a request from the browser of a client device. Additionally, the Proxy cache server can send a Refresh_request command to the Web content servers applying to a list of objects for which the expiration date has expired. The refreshed objects are not sent by the Web content server if the last modified date has changed but rather if, and only if, the object content, identified by a signature, has been changed. This method and system have the advantage of offloading the computing resources involved for data transfer through the network connecting the servers.

A data transport system for transporting data between a server (21) and a client receiver (27) over a network (23) includes a receiving proxy cache (25) coupled to a client receiver (27) via a reliable connection (29), such as a cable connection. The majority of data is transported from the server (21) to the receiving proxy cache (25) over an efficient data transmission channel (41). The receiving proxy cache (25) verifies the status of the data transmitted over the efficient channel (41). If there is an error in the data transmission, a portion of the data associated with the error is retransmitted from the server (21) to the receiving proxy cache (25) over a reliable data transmission channel (43). The complete data at the receiving proxy cache (25) is delivered to a client receiver (27) over a reliable connection (29).

The consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS are extended to provide a shared memory foundation for efficiently broadcasting real-time high definition video from a source object to large numbers of viewers via the Internet. Distributed applications such as video viewing client applications establish connections to a common distributed file system object, and then each application registers with the underlying distributed file system to receive notifications whenever the video source modifies the source object. The data required to update images maintained by viewing clients is included in notification messages. The distributed file system employs a network of proxy cache nodes. Proxy cache nodes receive notification messages (complete with image update data) and update their cached images of the source object and then retransmit the notification messages towards the viewing clients using IP multicast techniques. In this manner, the distributed file system's consistency mechanism efficiently employs network resources to enable the real-time distribution of video content streams.

The embodiment of the invention provides a method and device for selecting a cache replacement strategy, a proxy server and a system, which can reduce artificial participation and automatically switches the cache replacement strategy. The method comprises the following steps: obtaining the statistical data of a plurality of cache replacement strategies simultaneously operated; according to the cache replacement strategies, deciding a decision event and the statistical data; and switching the main cache replacement strategy into the cache replacement strategy satisfying a decision requirement. The cache replacement strategies provided by the embodiment of the invention are automatically switched to lower technical requirements on management personnel; in addition, when a proxy cache operates, a cache replacement strategy which is suitable for the current scene and most conforms to the expectation of user performance can be automatically selected; and the cache replacement strategy has good adaptability. Compared with the scheme in the prior art that only one cache replacement strategy is used throughout, the method and the device can further improve the performance of the proxy cache.

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.