Ошибка подключения к Hikari CP

У нас есть приложение для определения местоположения, которое предоставляет информацию о местоположении для других наших приложений из базы данных MySQL. По какой-то причине служба определения местоположения не может подключиться к базе данных MySQL при получении нескольких запросов. Мы наблюдали, что она терпит неудачу при одновременном получении непрерывного запроса 15-20. Следующие фрагменты - это код конфигурации MySQL и стек ошибок.

 My@Bean(name = "locationDataSource")
public HikariDataSource getDataSource(@Value("${projectxx.mysql.location.url}") String url,
        @Value("${projectxx.mysql.location.username}") String username,
        @Value("${projectxx.mysql.location.password}") String password) {


    HikariConfig config = new HikariConfig();
    config.setJdbcUrl(url);
    config.setUsername(username);
    config.setPassword(password);
    config.setDriverClassName("com.mysql.jdbc.Driver");
    config.setMaximumPoolSize(45);
    config.setPoolName("locationDBpool");
    config.setMinimumIdle(15);

    config.addDataSourceProperty("cachePrepStmts", "true");
    config.addDataSourceProperty("prepStmtCacheSize", "250");
    config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");

    return new HikariDataSource(config);

}

@Bean(name = "locationSession")
@Qualifier("locationDataSource")
public SessionFactory getSessionFactoryBean(@Autowired(required = true) HikariDataSource dataSource) {

    LocalSessionFactoryBean sessionFacBean = new LocalSessionFactoryBean();
    sessionFacBean.setDataSource(dataSource);
    sessionFacBean.setPackagesToScan("com.projectxxx.dao");
    Properties hibernateProperties = new Properties();
    hibernateProperties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
    sessionFacBean.setHibernateProperties(hibernateProperties);
    try {
        sessionFacBean.afterPropertiesSet();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return sessionFacBean.getObject();

}

java.sql.SQLTransientConnectionException: locationDBpool - соединение недоступно, запрос истекает через 30000мс. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:666) ~ [HikariCP-2.7.4.jar: na] в com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:182) ~ [HikariCP-2.7.4.jar: na] в com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147) ~ [HikariCP-2.7.4.jar: na] в com.zaxxer.hikari. HikariDataSource.getConnection(HikariDataSource.java:85) ~ [HikariCP-2.7.4.jar: na] в org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~ [hibernate-core -5.0.12.Final.jar: 5.0.12.Final] at org.hibernate.internal.AbstractSessionImpl $ NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:386) ~ [hibernate-core-5.0.12.Final.jar: 5.0. 12.Final] на org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:87) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] на org.hibernate. resource.jdbc.internal.LogicalConnec(ManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:112) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] в org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getConnectionForTransactionManagement(LogicalConnectionManagedImpl.java:230 ) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] в org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:237) ~ [hibernate-core-5.0. 12.Final.jar: 5.0.12.Final] at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl $ TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:214) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:52) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1512) ~ [hibernate-core-5.0.12.Final.jar: 5.0.12.Final] в com.proje ctxxx.actionImpl.LocationManagementImpl.findAddressByPostalCode(LocationManagementImpl.java:40) ~ [classes/: na] в com.projectxxx.controller.LocationReadController.service3 (LocationReadController.java:40) ~ [classes/: na] at sun.reflect. GeneratedMethodAccessor51.invoke (Неизвестный источник) ~ [na: na] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~ [na: 1.8.0_131] в java.lang.reflect.Method.invoke(Method.java: 498) ~ [na: 1.8.0_131] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12. RELEASE] в org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] на org.springframework.web. servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] на org.springframework.w eb.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] на org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter. handle (AbstractHandlerMethodAdapter.java:85) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) ~ [spring -webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework. web.servlet.F rameworkServlet.doGet(FrameworkServlet.java:861) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~ [tomcat -embed-core-8.5.23.jar: 8.5.23] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~ [spring-webmvc-4.3.12.RELEASE.jar: 4.3. 12.RELEASE] в javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] на org.apache.catalina.core.ApplicationFilterChain. internalDoFilter (ApplicationFilterChain.java:231) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [tomcat-embed -core-8.5.23.jar: 8.5.23] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~ [tomcat-embed-websocket-8.5.23.jar: 8.5. 23] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.cor e.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~ [spring-web-4.3.12.RELEASE. jar: 4.3.12.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache. catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108 ) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~ [spring-web-4.3.12. RELEASE.jar: 4.3.12.RELEASE] в org.apache.catalina.core .ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [ tomcat-embed-core-8.5.23.jar: 8.5.23] at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] на org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] в org.springframework.web.fi lter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~ [spring-web-4.3.12.RELEASE.jar: 4.3.12.RELEASE] на org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193 ) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~ [tomcat-embed-core-8.5.23. jar: 8.5.23] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~ [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina. core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat -embed-core-8.5.23.jar: 8.5.23] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.23.jar: 8.5.23 ] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.23.jar: 8.5.23] на org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.23.jar: 8.5.23] на org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 342) [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-embed-core-8.5. 23.jar: 8.5.23] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.coyote.AbstractProtocol $ ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-8.5.23.jar: 8.5.23] на org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun(NioEndpoint.java:1459 ) [tomcat-embed-core-8.5.23.jar: 8.5.23] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.23. jar: 8.5.23] на java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na: 1.8.0_131] на java.util.concurrent.ThreadPoolExecutor $ Worker .run(ThreadPoolExecutor.java:617) [na: 1.8.0_131] at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.23. jar: 8.5.23] на java.lang.Thread.run(Thread.java:748) [na: 1.8.0_131]