小编Ива*_*душ的帖子

我正在尝试在我的服务之间使用 GRPC。我只有三项服务。其中两个在 k8s 中运行。GCP 中的一员。我从 GCP 中的服务调用其他服务。我对我的存根使用相同的 NettyChannelBuilder。客户端具有相同的每秒请求率。我在构建器中设置了 keepAliveWithoutCalls=true、keepAliveTime、idleTimeout 。不幸的是，我定期只从一个客户端收到此错误？

io.grpc.StatusRuntimeException: UNAVAILABLE: upstream connect error or disconnect/reset before headers. reset reason: connection failure
    at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:233)
    at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:214)

有人可以帮我找到解决方案吗？我已经在 github 上阅读了很多问题。现在，我要为呼叫设置重试策略，但这不是最好的解决方案。

我将我的应用程序从java 8迁移到java 10.但是现在我在尝试将某些东西存储在数据库中时看到以下异常

Caused by: javax.persistence.RollbackException: Error while committing the transaction
    at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:77) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517) ~[spring-orm-4.3.18.RELEASE.jar:4.3.18.RELEASE]
... 91 more
Caused by: org.hibernate.AssertionFailure: Exception releasing cache locks
    at org.hibernate.engine.spi.ActionQueue$AfterTransactionCompletionProcessQueue.afterTransactionCompletion(ActionQueue.java:990) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.engine.spi.ActionQueue.afterTransactionCompletion(ActionQueue.java:513) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.internal.SessionImpl.afterTransactionCompletion(SessionImpl.java:2501) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.afterTransactionCompletion(JdbcCoordinatorImpl.java:479) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.afterCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:198) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$400(JdbcResourceLocalTransactionCoordinatorImpl.java:39) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:273) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:98) ~[hibernate-core-5.3.2.Final.jar:5.3.2.Final]
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517) ~[spring-orm-4.3.18.RELEASE.jar:4.3.18.RELEASE]
... 91 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private jdk.internal.reflect.ConstructorAccessorImpl jdk.internal.reflect.DelegatingConstructorAccessorImpl.delegate accessible: module java.base does not "opens jdk.internal.reflect" to unnamed module …

我试图在aws上找到nginx的替代品,并且发现只有53号路径.它是相同的服务还是没有？aws有替代nginx吗？