c3p0中的默认连接池大小是多少

Question

在下面的配置中,如果我错过了初始,最大,最小池大小.c3p0中的默认连接池大小是多少？

<bean class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" id="dataSource">
    <property name="driverClass" value="${dbDriver}"/>
    <property name="jdbcUrl" value="${dbURL}"/>
    <property name="user" value="${dbUsername}"/>
    <property name="password" value="${dbPassword}"/>
    <property name="initialPoolSize" value="5"/>
    <property name="maxPoolSize" value="50"/>
    <property name="minPoolSize" value="5"/>
    <property name="maxIdleTime" value="3000"/>
</bean>

Answer 1

InitialPoolSize默认为3.

您可以查看以下链接以获取更多信息:

http://www.mchange.com/projects/c3p0/#initialPoolSize

http://javatech.org/2007/11/c3p0-connectionpool-configuration-rules-of-thumb/

Answer 2

摘自com.mchange.v2.c3p0.impl.C3P0Defaults：

private final static int INITIAL_POOL_SIZE     = 3;  
private final static int MIN_POOL_SIZE         = 3;
private final static int MAX_POOL_SIZE         = 15;

但是，如果没有记录，请不要依赖默认值。