Research On Cache Technology Of High Performance Proxy

With the development of economic and society,the rapid use of the internet ,the load of the network is increasing. As a result, the propose of the proxy solve effectively this problem,which set up a proxy server at the export of the internel network and the external network.The proxy greatly improves the user requests for the internal efficiency of WEB services, and enhance the security of internal systems.However,the cache in the proxy is crucially important.This paper focous on the key technology of the proxy cache.This paper proposes a new distributed proxy cache system double hierarchical cluster proxy cache based on the similarity and locality for users'access to the Internet. This architecture consists of two layers, clusters within the network cache and proxy cache cluster. The clusters within the network cache makes use of the resource of the internal net work.The proxy cache cluste considerr the establishment of a sub-group of the agency point of caching proxy mechanisms, making the proxy significantly reduced the load.This architecture makes full use of the local network resource and disperses the burden of the proxy by use of the double-cloud structure; also this structure reduces the cost of the communication, enhances the utilization of the cache, improves the hit rates and reduces overall resource consumption of the proxy. This paper put forward the corresponding algorithm to optimize the overall system performance at the prefetch for the cache, cache coherence and securityThis paper proposes the distributed cache system performance assessment framework to the surface from the point of child nodes of a single point of proposed assessment and an overall assessment of all nodes from the two levels of a istributed cache system performance assessment of theoretical foundation . This paper also compares the ICP structure and the existing cache buffer array model and the theoretical model of the system performance comparison. Finally this paper, based on double caching system design and implementation of specific programs, and improved through the netfilter framework, the security of the cache system to be protected. Last bonding evaluation framework, an experiment on the overall system and the corresponding sub-strategies to be tested.