Caching Mechanism Research Of Service Identifier Resolving&Mapping System In New Internet

With the continuous development of the Internet,the needs of the Internet in all walks of life are increasing.In order to reduce the pressure caused by the massive user request for network equipment,we often need to answer the user's request before the server,which means that we need to be part of the service provided by the server to do a copy and place it closer to the user's location instead of the server,this is the function provided by cache.So,efficient caching technology has become a hotspot at present,and any Internet system needs to have a perfect cache mechanism before being put into practical use.In the existing service identifier resolving&mapping system in New Internet,the mapping of service identifier to access identifier has been designed and implemented.But in the face of the future needs for high reliability and low delay,this thesis designs a complete cache scheme on the basis of it.In order to reduce the query delay of users and improve the user experience,the cache exists in the edge of the mapping system to temporarily store the mapping pair.The cache system designed in this thesis mainly focuses on the following points.Firstly,optimize the memory allocation and partitioning.In some projects which involve the memory resource utilization,we usually can't allocate the memory directly because the memory is discontinuous,so it will cause a large number of memory blocks can't be used and the utilization of limited resources will reduce.In this thesis,we need to design an efficient memory management scheme to reduce memory redundancy and maximize the utilization of limited resources.Secondly,add cache replacement algorithm.Because the device memory is often limited,we need to choose the appropriate replacement algorithm to deal with the limited memory resources when we are designing a cache system.Then,add cache consistency policy.In order to meet the requirements on cache consistency of New Internet service identifier,we need to select appropriate consistency strategy to ensure the effectiveness of data.Then,design packet formats and interactive processes.In order to make the cache system perfectly integrated into the original service identifier resolving&mapping system in New Internet,it is necessary to design the format of all cache packets and the interaction process with the original network entities.Finally,code the implementation of all the design schemes and applying to service identifier resolving&mapping system in New Internet.