使用 Spring Reactor 时为什么要使用断路器和隔板? [英] Why use Circuit Breaker and Bulkhead when working with Spring Reactor?

问题描述

请帮我找出断路器和隔板模式在 Spring Reactor 应用程序中有用的原因.

Please help me find reasons why Circuit breaker and Bulkhead patterns are useful in a Spring Reactor application.

由于操作在 Reactor 中将是非阻塞的，并且这两种模式旨在节省对资源(主要是线程)的潜在影响，在什么情况下我可以使我的 Spring Reactor 应用程序中的模式受益.在这一点上，我唯一看到的是，如果请求数量如此之大，以至于将它们保存在内存中，同时等待超时(而不是断路器启动和回退)，我们会运行 OOM.

Since operations will be non-blocking in Reactor and those two patterns aim at saving potential hit to resources (mostly threads), in what cases can I benefit the patterns in my Spring Reactor app. The only thing I see at this point is if the requests are such a tremendously huge amount that keeping them in memory, while waiting for a timeout (instead of Circuit Breaker being up and falling back) we run OOM.

推荐答案

除了保护您自己的应用程序之外，这些模式还可以帮助您保护外部服务(REST API、数据库等):在延迟和/或错误率增加的情况下，你给他们恢复的空间.在您的应用程序中快速失败也是有益的，因为您不会让您的最终用户等待太久的错误.

Beside protecting your own application, these patterns also help you protect external services (REST API, database, etc): in case of increased latency and/or error rate, you give them room to recover. Failing fast in your application is also beneficial as you don't make your end-users wait too long for an error.

Resilience4j 为这些模式提供了专用的Reactor 支持，代替了已弃用的 Hystrix 库.

Resilience4j provides dedicated Reactor support for these patterns in place of the deprecated Hystrix library.

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