什么是HIkariCP
https://www.jianshu.com/p/15b846107a7c
使用HikariCP数据源
pom.xml
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>3.3.1</version>
</dependency>
Spring-mvc.xml
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="shutdown">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="connectionTestQuery" value="SELECT 1" />
<!-- 生效超时 -->
<property name="validationTimeout" value="3000" />
<!-- 连接只读数据库时配置为true， 保证安全 -->
<property name="readOnly" value="false" />
<!-- 等待连接池分配连接的最大时长（毫秒），超过这个时长还没可用的连接则发生SQLException， 缺省:30秒 -->
<property name="connectionTimeout" value="60000" />
<!-- 一个连接idle状态的最大时长（毫秒），超时则被释放（retired），缺省:10分钟 -->
<property name="idleTimeout" value="60000" />
<!-- 一个连接的生命时长（毫秒），超时而且没被使用则被释放（retired），缺省:30分钟，建议设置比数据库超时时长少30秒，参考MySQL
wait_timeout参数（show variables like '%timeout%';） -->
<property name="maxLifetime" value="60000" />
<!-- 连接池中允许的最大连接数。缺省值：10；推荐的公式：((core_count * 2) effective_spindle_count) -->
<property name="maximumPoolSize" value="10" />
</bean>
启动成功日志
17:36:50.838 [main] WARN com.zaxxer.hikari.HikariConfig - HikariPool-1 - idleTimeout has been set but has no effect because the pool is operating as a fixed size pool.
17:36:50.838 [main] DEBUG com.zaxxer.hikari.HikariConfig - HikariPool-1 - configuration:
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - allowPoolSuspension.............false
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - autoCommit......................true
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - catalog.........................none
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - connectionInitSql...............none
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - connectionTestQuery............."SELECT 1"
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - connectionTimeout...............60000
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - dataSource......................none
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - dataSourceClassName.............none
17:36:50.841 [main] DEBUG com.zaxxer.hikari.HikariConfig - dataSourceJNDI..................none
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - dataSourceProperties............{password=<masked>}
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - driverClassName................."com.mysql.jdbc.Driver"
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - healthCheckProperties...........{}
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - healthCheckRegistry.............none
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - idleTimeout.....................60000
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - initializationFailTimeout.......1
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - isolateInternalQueries..........false
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - jdbcUrl.........................jdbc:mysql://ykx.uerp.net:3306/ykx?useUnicode=true&characterEncoding=utf8
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - leakDetectionThreshold..........0
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - maxLifetime.....................60000
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - maximumPoolSize.................10
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - metricRegistry..................none
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - metricsTrackerFactory...........none
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - minimumIdle.....................10
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - password........................<masked>
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - poolName........................"HikariPool-1"
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - readOnly........................false
17:36:50.843 [main] DEBUG com.zaxxer.hikari.HikariConfig - registerMbeans..................false
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - scheduledExecutor...............none
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - schema..........................none
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - threadFactory...................internal
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - transactionIsolation............default
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - username........................"ykx"
17:36:50.844 [main] DEBUG com.zaxxer.hikari.HikariConfig - validationTimeout...............3000
17:36:50.844 [main] INFO com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Starting...
17:36:51.257 [main] DEBUG com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Added connection com.mysql.jdbc.JDBC4Connection@1d77a31d
17:36:51.260 [main] INFO com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Start completed.
