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dbtype: mysql dbversion: 5.7 druid verion: 1.2.22 error info:
Communications link failure The last packet successfully received from the server was 369,104 milliseconds ago. The last packet sent successfully to the server was 16 milliseconds ago.
描述:
dbtype: mysql
dbversion: 5.7
druid verion: 1.2.22
error info:
Communications link failure The last packet successfully received from the server was 369,104 milliseconds ago. The last packet sent successfully to the server was 16 milliseconds ago.
描述:
三种情况,第一种最严重,也可能是我没有设置validationQuery=select 1,但是切换驱动5没加也好了。
2和3都加了validationQuery=select 1,大部分Communications link failure都是validationQuery的时候触发的,但是会经常出现,druid配置timeBetweenEvictionRunsMillis=60000和minEvictableIdleTimeMillis=300000,wait-time设置的是300。
总体感觉驱动5的性能比8好。请问应该怎么处理优化。
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