Hello,
I have created simple rest API, using spring 3.2 that simply calls a service to retrieve a simple string from a mysql database.
As part of the poc and that the web service will be used for high traffic I have bee doing some performance testing using apache bench.
However when I hit my web service with 4000 connections with a concurrency of 100 my app falls over.
[CODE]
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientC onnectionException: Data source rejected establishment of connection, message from server: "Too many connections"
Here is my datasource config
Here is my persistence context
My service context
My Service
MY DAO
I was under the impression that spring manages the opening and closing of the connection? Can anyone help me understand what is wrong or point me in the right direction?
I have created simple rest API, using spring 3.2 that simply calls a service to retrieve a simple string from a mysql database.
As part of the poc and that the web service will be used for high traffic I have bee doing some performance testing using apache bench.
However when I hit my web service with 4000 connections with a concurrency of 100 my app falls over.
[CODE]
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientC onnectionException: Data source rejected establishment of connection, message from server: "Too many connections"
Here is my datasource config
Code:
<bean id="dataSource" class = "com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${jdbc.driverClassName}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="acquireIncrement" value="${c3p0.acquireIncrement}" />
<property name="minPoolSize" value="${c3p0.minPoolSize}" />
<property name="maxPoolSize" value="${c3p0.maxPoolSize}" />
<property name="maxIdleTime" value="${c3p0.maxIdleTime}" />
<property name="maxAdministrativeTaskTime" value="5" />
</bean>
</beans>Code:
<context:component-scan base-package="uk.co.mycompany.persistence.dao.impl" />
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref local="sessionFactory" />
</property>
</bean>
<context:property-placeholder location="classpath:/properties/database.properties, file://${mycompany.override.config.dir}/database.properties" ignore-resource-not-found="true" />
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref local="dataSource" />
</property>
<property name="mappingResources">
<list>
<value>hibernate/mappings/uk/co/mycompany/persistence/model/PerformanceTest.hbm.xml</value>
</list>
</property>
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
<prop key="hibernate.use_sql_comments">${hibernate.use_sql_comments}</prop>
<prop key="hibernate.auto_close_session">${hibernate.use_sql_comments}</prop>
</props>
</property>
</bean>
</beans>Code:
<context:component-scan base-package="uk.co.mycompany.persistence.service.impl" />
<tx:annotation-driven />
</beans>Code:
@Service
@Transactional
public class LoginService implements ILoginService{
@Autowired
private LoginDao loginDao;
private static Logger logger = LoggerFactory.getLogger(LoginService.class);
public LoginService() {
logger.debug("**Instantiation of LogionService**");
}
@Override
public List<PerformanceTest> loadPerformanceTestData() {
return loginDao.loadPerformanceTestData();
}
}Code:
@Repository
public class LoginDao implements ILoginDao{
private SessionFactory sessionFactory;
private Session currentSession() {
return this.sessionFactory.getCurrentSession();
}
@Autowired
public LoginDao(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
@Override
public List<PerformanceTest> loadPerformanceTestData() {
List performanceTest = currentSession().createCriteria(PerformanceTest.class).list();
return performanceTest;
}
}I was under the impression that spring manages the opening and closing of the connection? Can anyone help me understand what is wrong or point me in the right direction?