Based on the pop network structure, load balancing provides an efficient and low-cost way to broaden server band and improve the data processing ability of computer, and, at the same time, avoid single point mistakes.

• 负载均衡建立在现有网络结构之上，它提供了一种廉价有效的方法来扩展服务器带宽，增加吞吐量，提高数据处理能力，同时又可以避免单点故障。