这种复制的优点在于它通常只在本地节点读取数据，因为每个节点都拥有这些数据；另外，当群集中有新节点加入或者需要移除现存节点的时候，它也不需要重新进行负载均衡。

The advantage of replication is that reads are always local, as everybody has the data, and there is no re-balancing going on when a new node joins or an existing node leaves the cluster.

youdao

通过对负载均衡方法的分析，给出了负载均衡解决方案，构建了基于服务器群集的动态负载均衡体系结构。

An implementation method of video server cluster system is presented in this paper by analyzing the Linux virtual server.

youdao