Spring & Hibernate SessionFactory 성능 문제

Question

최대 절전 모드 sessionFactory에 성능 문제가 있습니다. 그것은 봄 부팅입니다 - 나는 또한이 질문에 설명 된 모든 다른 방법을 시도이

@Bean 
public SessionFactory sessionFactory(HibernateEntityManagerFactory hemf){ 
    return hemf.getSessionFactory(); 
} 

같이 구성된 SessionFactory를 함께 응용 프로그램을 최대 절전 모드 내 DAO이

@Autowired 
private SessionFactory sessionFactory; 


@Transactional 
public List<Type> findAll() { 
    return sessionFactory.getCurrentSession().createQuery("from Type").list(); 
} 

과 같은 Spring Boot - Handle to Hibernate SessionFactory

동시 db 요청 수가 구성된 maximumPoolSize (이 예제에서 10)보다 큰 경우 응용 프로그램이 응답하지 않게됩니다.

@RequestMapping(value = "/stress-sessionfactory") 
public void stressTest(@RequestParam int threadsCount) { 
    List<Thread> threads = new ArrayList<>(); 
    for (int i = 0; i < threadsCount; i++) { 
     final int k = i; 
     Runnable runnable 
       =() -> { 

      List<Type> all = typeDAOHibernate.findAll(); 
      LOG.info("{}:sessionfactory:{} ", k, all.size()); 
     }; 
     Thread t = new Thread(runnable); 
     threads.add(t); 
    } 
    threads.stream().forEach(t -> t.start()); 
} 

github에서 독립 실행 형 예를 찾을 수 있습니다. 이 예는 maximumPoolSize=10으로 구성됩니다. 그럼 그냥 http://localhost:8080/stress-sessionfactory?threadsCount=11을 누르면 내가 말하는 오류가 발생합니다.

반면에 Spring Data 저장소는 수천 개의 동시 요청을 쉽게 처리 할 수 ​​있습니다! (예를 들어 http://localhost:8080/stress-jpa?threadsCount=2000) 나는 다른 데이터 소스 (히카리, 톰캣), 다른 데이터베이스 (오라클, H2) 및 다른 최대 절전 모드 버전과 같은 시나리오를 시도

(5.011 - 최종, v4.3.11 - 최종)와 난 항상 얻을 같은 오류.

스택 트레이스

Exception in thread "Thread-51" Exception in thread "Thread-47" org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:431) at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373) at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:447) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:277) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) at com.example.dao.TypeDAOHibernate$$EnhancerBySpringCGLIB$$e6373e2e.findAll(<generated>) at com.example.controller.StressController.lambda$stressTest$0(StressController.java:36) at java.lang.Thread.run(Thread.java:745) Caused by: javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692) at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602) at org.hibernate.jpa.spi.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:1700) at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:48) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.beginTransaction(HibernateJpaDialect.java:189) at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:380) ... 9 more Caused by: org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:48) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:95) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:90) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:112) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:230) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:237) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:214) at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:52) at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1512) at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:45) ... 11 more Caused by: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30001ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:591) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:194) at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:146) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:386) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:87) ... 18 more []

Answer 1

난 당신이 SessionFactory를 주입하지만 스프링 프레임 워크의 트랜잭션 기능을 사용하지 않는 것으로 나타났습니다. 이와 같이 사용하려면 dao 계층의 sessionFactory에서 가져온 세션을 닫아야합니다.