<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
	<!-- access configuration -->
	<property name="driverClass" value="${jdbc.driverclass}" />
	<property name="jdbcUrl" value="${jdbc.url}" />
	<property name="user" value="${jdbc.username}" />
	<property name="password" value="${jdbc.password}" />
	<!-- pool sizing -->
	<property name="initialPoolSize" value="9" />
	<property name="minPoolSize" value="6" />
	<property name="maxPoolSize" value="30" />
	<property name="acquireIncrement" value="3" />
	<property name="maxStatements" value="0" />
	<!-- retries -->
	<property name="acquireRetryAttempts" value="30" />
	<property name="acquireRetryDelay" value="1000" /> <!-- 1s -->
	<property name="breakAfterAcquireFailure" value="false" />
	<!-- refreshing connections -->
	<property name="maxIdleTime" value="180" /> <!-- 3min -->
	<property name="maxConnectionAge" value="3600" /> <!-- 1h - be careful with this! -->
	<!-- timeouts e testing -->
	<property name="checkoutTimeout" value="5000" /> <!-- 5s -->
	<property name="idleConnectionTestPeriod" value="60" /> <!-- 60 -->
	<property name="testConnectionOnCheckout" value="true" />
	<property name="preferredTestQuery" value="SELECT 1+1" />
</bean>