Ctt Vod Cluster System Load Balancing Studies And Realization

With the development of the Serial Processing Technology, people found its development reach the limit because the physics laws. How to reach the requirement of the computing that people need? The Parallel Processing Technology can meet this requirement. The Parallel Processing Technology passed the process from theory to practice, in today, Cluster Technology is the practice of The Parallel Processing Technology.Cluster Technology divided into three technologies: High Availability Cluster (HAC); High Performance Computing Cluster (HPCC); Load Balance Cluster. These three technologies can use in all kinds of application. VOD Service Platform also needs Cluster Technology.This paper uses HAC and Load Balance Cluster in VOD Platform. It implements High Availability Database System; Stream Media Load Balance Cluster; Web Server Load Balance Cluster.This paper took point in Stream Media Load Balance Cluster. I carry out the framework of stream media load balance, in develop I use . Net technology. With VB. Net I realize the VOD Agent Service, and use Web Service to realize the unify database interface, use ASP to realize load balance monitor service and load balance distribute.Web Server Load Balance Cluster realize with NT System' s NLB Service (Network Load Balance). And High Availability Database Cluster use MSCS and SQL Server Cluster Service to realize.With the Cluster Technology, VOD Platform online times last 7*24h. And the capability reaches 400 online per server before 250 online per server. The total capability reaches 2000 online using 5 servers with Load Balance Technology.