用于管控业务对 mysql 集群的访问读写分离权限管控分组功能支持流量负载均衡账号管理配置热加载客户端请求类型对应协议说明：COM_QUIT 关闭连接 handleRollback()Close() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_quit.htmlCOM_QUERY SQL查询及 dml、ddl请求 handleQuery() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_query.htmlCOM_PING 测试连通性 writeOK() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_ping.htmlCOM_INIT_DB 切换数据库 handleUseDB() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_init_db.htmlCOM_FIELD_LIST 获取数据表字段信息 handleFieldList() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_field_list.htmlCOM_STMT_PREPARE 预处理SQL语句 handleStmtPrepare() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_prepare.htmlCOM_STMT_EXECUTE 执行预处理语句 handleStmtExecute() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_execute.htmlCOM_STMT_CLOSE 销毁预处理语句 handleStmtClose() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_close.htmlCOM_STMT_SEND_LONG_DATA 发送BLOB类型的数据 handleStmtSendLongData() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_send_long_data.htmlCOM_STMT_RESET 清除预处理语句参数缓存 handleStmtReset() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_reset.htmlCOM_SET_OPTION 设置语句选项 handleSetOption() https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_set_option.html