By using load balancing technology, the visit to the web server is distributed to several servers. This kind of load balancing is independent of the users, which makes the web service as being provided by just one web server on the whole.

• 利用负载均衡的技术,按照一定策略将Web 访问服务分配到几台服务器上,负载处理对用户透明,整体上对外如同一台Web 服务器为用户提供Web服务。