这并非在客户端与服务器之间进行通信的最有效方式，但却最简单和最可靠。
This is not the most efficient way to communicate between the client and server, but it is the simplest and most reliable.
尽管有多种方法可以提供高可用服务(参见参考资料)，但最流行、最可靠的方法是使用虚拟ip。
Although there are a variety of methods for providing highly available services (see Resources), the most popular and robust of these methods is to use virtual IPs.
Managed - persistent最可靠，使用消息引擎，并进行存储来保存消息，不受服务器和消息引擎重启影响。
Managed-persistent is the most reliable, using the message engine and store to persist messages across server and message engine restarts.
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