springboot(二十)：数据库连接池介绍

 概述

1. 性能方面 hikariCP>druid>tomcat-jdbc>dbcp>c3p0 。hikariCP的高性能得益于最大限度的避免锁竞争。
2. druid功能最为全面，sql拦截等功能，统计数据较为全面，具有良好的扩展性。

Druid

application.properties

#mybatis-mysql-druid
mybatis.mapper-locations="classpath:mapper/*.xml"
mybatis.config-location="classpath:mapper/config/mybatis-config.xml"
mybatis.type-aliases-package="com.bitauto.oa.purchase.pojo"
spring.datasource.url = jdbc:mysql://127.0.0.1:3306/purchase?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
spring.datasource.username = root
spring.datasource.password = root
spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver
#spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

mybatis-mysql-druid