mysql数据库加载太慢_mybatis+mysql，第一次数据库连接很慢怎么回事？

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我是靠谱客的博主刻苦鸡翅，最近开发中收集的这篇文章主要介绍mysql数据库加载太慢_mybatis+mysql，第一次数据库连接很慢怎么回事？，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

springboot+mybatis+mysql项目

第一次连接数据库是@Transactional事务的状况

2017-10-13 11:28:00,825 [http-nio-8070-exec-1] DEBUG [org.springframework.jdbc.datasource.DataSourceTransactionManager] - Creating new transaction with name [com.eversec.centertool.modules.woapi.service.WoApiService.getActivityVo]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT,readOnly; ''

2017-10-13 11:29:41,342 [http-nio-8070-exec-1] DEBUG [org.springframework.jdbc.datasource.DataSourceTransactionManager] - Acquired Connection [ProxyConnection[PooledConnection[com.mysql.jdbc.JDBC4Connection@5d05f6d3]]] for JDBC transaction

2017-10-13 11:29:41,347 [http-nio-8070-exec-1] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils] - Setting JDBC Connection [ProxyConnection[PooledConnection[com.mysql.jdbc.JDBC4Connection@5d05f6d3]]] read-only

2017-10-13 11:29:41,347 [http-nio-8070-exec-1] DEBUG [org.springframework.jdbc.datasource.DataSourceTransactionManager] - Switching JDBC Connection [ProxyConnection[PooledConnection[com.mysql.jdbc.JDBC4Connection@5d05f6d3]]] to manual commit

第一次连接数据库是非@Transactional事务的状况

2017-10-13 15:03:16,202 [http-nio-8070-exec-1] DEBUG [org.mybatis.spring.SqlSessionUtils] - Creating a new SqlSession

2017-10-13 15:03:16,210 [http-nio-8070-exec-1] DEBUG [org.mybatis.spring.SqlSessionUtils] - SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@235030d0] was not registered for synchronization because synchronization is not active

2017-10-13 15:03:16,223 [http-nio-8070-exec-1] DEBUG [org.springframework.jdbc.datasource.DataSourceUtils] - Fetching JDBC Connection from DataSource

2017-10-13 15:04:56,735 [http-nio-8070-exec-1] DEBUG [org.mybatis.spring.transaction.SpringManagedTransaction] - JDBC Connection [ProxyConnection[PooledConnection[com.mysql.jdbc.JDBC4Connection@4aa70f74]]] will not be managed by Spring