我在应用程序中使用Java couchbase-sdk。在设置DefaultCouchbaseEnvironment时，我遇到了RetryStrategy属性。现在我使用的默认配置的重试策略是BestEffortRetryStrategy。根据文件
BestEffortRetryStrategy will retry the operation until it either succeeds or the maximum request lifetime is reached
默认情况下，最大请求生存期为75秒。
现在我想明白的是，重试在这里意味着什么。重试是指每当发生异常时都会重试请求，还是意味着它会重试将此请求分配给某个节点以处理请求，以防无法处理，并保持重试75秒？
我正在查看我的应用程序日志中的不同异常，以了解这一点，我可以看到TemporaryFailureException没有重试，在某些情况下，RequestCancelledException在75秒后被抛出。假设couchbase重试一个请求，将其分配给节点来处理它，而一旦它到达将处理该请求的节点，就不会对任何异常进行实际重试，这公平吗？
TemporaryFailureException的StackTrace-
stackTrace: com.couchbase.client.java.error.TemporaryFailureException: null
at com.couchbase.client.java.bucket.api.Mutate$2$1.call(Mutate.java:246)
at com.couchbase.client.java.bucket.api.Mutate$2$1.call(Mutate.java:220)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.onNext(OnSubscribeMap.java:69)
at rx.observers.Subscribers$5.onNext(Subscribers.java:235)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onNext(OnSubscribeDoOnEach.java:101)
at rx.internal.producers.SingleProducer.request(SingleProducer.java:65)
at rx.Subscriber.setProducer(Subscriber.java:211)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.setProducer(OnSubscribeMap.java:102)
at rx.Subscriber.setProducer(Subscriber.java:205)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.setProducer(OnSubscribeMap.java:102)
at rx.Subscriber.setProducer(Subscriber.java:205)
at rx.Subscriber.setProducer(Subscriber.java:205)
at rx.subjects.AsyncSubject.onCompleted(AsyncSubject.java:103)
at com.couchbase.client.core.endpoint.AbstractGenericHandler.completeResponse(AbstractGenericHandler.java:508)
at com.couchbase.client.core.endpoint.AbstractGenericHandler.access$000(AbstractGenericHandler.java:86)
at com.couchbase.client.core.endpoint.AbstractGenericHandler$1.call(AbstractGenericHandler.java:526)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java)
at java.lang.Thread.run(Thread.java:748)
Caused by: rx.exceptions.OnErrorThrowable$OnNextValue: OnError while emitting onNext value: com.couchbase.client.core.message.kv.UpsertResponse.class
at rx.exceptions.OnErrorThrowable.addValueAsLastCause(OnErrorThrowable.java:118)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.onNext(OnSubscribeMap.java:73)
... 21 common frames omitted```
BestEffortRetryStrategy应该重试，直到超时时请求被取消。FailFastRetryStrategy不应重试。它应该立即失败。
如果您有TemporaryFailureException，并且具有BestEffortRetryStrategy，则应该重试。如果你有一个没有重试的，你能共享堆栈竞争吗？
- 迈克