例如，操作系统为每个TCP连接维护TCP发送队列。
For example, the operating system maintains the TCP send queue for each TCP connection.
每一个有效的连接维护一个会话池，会话池也可通过ConnectionFactory的属性进行优化。
Each live connection maintains a session pool, which is also tunable via the ConnectionFactory's properties.
此规则的意图是，引导用户采用最佳实践：即尽可能减少所需维护的连接。
The intent behind this rule is to guide users toward the best practice of minimizing connections that need to be maintained.
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