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In version MySQL 5.7.7 Oracle presented a new promising feature: optimizer hints. However it did not publish any documentation about the hints. The on 阅读全文
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1 读写比例: 1 读写比例: 1 读写比例: show global status like 'com_select'; 获得服务器启动到目前查询操作执行的次数;show global status like 'com_insert'; 获得服务器启动到目前插入操作执行的次数;show globa 阅读全文
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开启MYSQL远程连接权限 1 2 3 4 5 //建议设置固定IP mysql> GRANT ALL PRIVILEGES ON *.* TO root@"8.8.8.8" IDENTIFIED BY "root"; mysql> flush privileges; //修改防火墙 iptable 阅读全文
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redis tcp-backlog配置 在redis2.8版本中有一个tcp-backlog配置, 说明如下: # TCP listen() backlog.## In high requests-per-second environments you need an high backlog in 阅读全文