A Study Of Control Technology For Distributed Multi Point Communication

With the continuous development of network communication technology,instant communication has become the important activities in the business enterprise network communication,especially the internal communication of companies has began to meet the development of real-time,network and open.At the same time,the demand for instant messaging service is increasing.At present,instant messaging software which is based on the Linux platform in the market is few,and faced with the problem of standard,the poor experience,not easy to expand.Therefore,how to design and build a platform based on Linux and specifically meet to demand the enterprise's high availability and high scalable real-time communication which has become an important issue.In this paper,through the detailed analysis and study on the principle and technology of Instant Messaging System,a complete distributed instant communication system is developed.This paper describes the overall framework of system,design of the program,detailed design of each module,realization of specific functions and the process of multipoint conmmunication by using ACE component.In addition,an improved consistency hash algorithm is proposed for Memcached.In addition,Finally,to test uniform distribution,adding and deleting nodes for the improved consistency hash algorithm,system function,performance test,and analyses the test results.Test results show that the improved consistent hash algorithm to a certain extent can effectively alleviate load pressure of Memcached,solve the problem of cache invalidation caused by increasing or decreasing of Memcached.Under the premise of the system average response time is 200ms,the cluster machine number is 5,the system can withstand at least 100 thousand people online at the same time.In addition,the system service module design method,which has certain reference value and guiding significance for the enterprise to develop internal instant communication system.