本节描述了 MySQL 服务器如何管理连接。这包括对可用连接接口的描述、服务器如何使用连接处理线程、管理连接接口的详细信息以及 DNS 查找的管理。This section describes how MySQL Server manages connections. This includes a description of the available connection interfaces, how the server uses connection handler threads, details about the administrative connection interface, and management of DNS lookups.