网络负载均衡的控制理论及实践战略

网络负载均衡技术NLB（Network Load Balancing）采用完全分配算法来为集群中的服务器分配进入的访问流量,当集群中的某台服务器失效时,NLB会自动转发数据到其他可用的服务器上。负载均衡由多台服务器以对称的方式组成一个服务器集合,每台服务器都具有等价的地位,都可以单独对外提供服务而无须其他服务器的辅助。通过某种负载分担技术,将外部发送来的请求均匀分配到对称结构中的某一台服务器上,而接收到请求的服务器独立地回应客户的请求。均衡负载能够平均分配客户请求到服务器列阵,籍此提供快速获取重要数据,解决大量并发访问服务问题。

Control Theory and Practice Strategy of Network Load Balancing

Network load balancing（NLB） technology uses distribution algorithms to distribute the access traffic for servers in the cluster, and when a cluster of server fails, NLB would automatically forward data to other available server. Load balancing is completed by multiple servers symmetrically forming a collection of servers, each server is of equivalent status, and could independently provide services without the support from other servers. Through a load-sharing technology, the requests from outside would be uniformly assigned to a server in the symmetrical structure, and the server, according to the received requests, independenty responds the customer＇s requests. The load balancing technology could equally distribute the customer＇ s requests to the server array, thus providing rapid access to.important data and solving numerous problems of simultaneous access services.