server.dropMaxConnection
将此属性设置为 true，一旦连接数达到 [server.maxConnections][server.maxConnections] 阈值，便开始关闭连接。此设置仅在集群模式下有效。
¥Set this property to true to begin closing connections once the number of connections reaches the [server.maxConnections][] threshold. This setting is only effective in cluster mode.