• Multiple Index Type (B-tree, R-tree, Hash, Full Text, etc.) • Server-side Thread Pool • Connection Thread Caching • Diagnostics, and SQL Tracing OLTP and Transactions • ACID Transactions InnoDB Cluster, ClusterSet • MySQL Group Replication MySQL Enterprise Scalability • MySQL Thread Pool MySQL Enterprise Security • MySQL Enterprise Authentication • MySQL Enterprise Transparent

������������� ������incoming���������������� ���applier_thread_handle�����! MGR��������(5)! GR��/��/�������! Applier_module::applier_thread_handle! ��incoming������! ����(packet)�����������! Applier�� le_transaction_id! Certifier::certify����! Wait_ticket->releaseTicket���������������! applier_thread_handle���� ! this->incoming->front(&packet); // blocking! ! switch (packet->get_packet_type())

6. Optimization Guidelines BKM innodb_thread_concurrency. Different values were tried; the best performance came with the default 0 (unlimited thread_concurrency). 50 c 100 c 150 c sas‐hdd innodb_undo_directory //mysql_log innodb_buffer_pool_size 3GB 12GB innodb_thread_concurrency 0 innodb_temp_data_file_path '../../..//mysql_log/ibtmp1:72 M:autoextend'

SQL 触发条件 DB 记录到DB 微信告警 微信告警 API HTTP POST 目的: • 当系统数据库较高时确保大多数请求能够够正常访问。 触发条件: • 依赖监控告警系统,thread_running > 30(可自定义) kill哪些语句: • select语句 • 非特定系统账号(可自定义) • 执行时间超过10S • 只Kill sql请求，不kill连接 监控告警系统