esilience4j v0.13.2 发布了，Resilience4j 是一个轻量级的容错组件，其灵感来自于 Hystrix，但主要为 Java 8 和函数式编程所设计。轻量级体现在其只用 Vavr 库（前身是 Javaslang），没有任何外部依赖。而 Hystrix 依赖了 Archaius ，Archaius 本身又依赖很多第三方包，例如 Guava、Apache Commons Configuration 等。
Resilience4j 提供了如下几款核心组件
resilience4j-circuitbreaker: Circuit breaking
resilience4j-ratelimiter: Rate limiting
resilience4j-bulkhead: Bulkheading
resilience4j-retry: Automatic retrying (sync and async)
resilience4j-cache: Response caching
限速组件架构：

更新内容包括 bug 修复、新增特性以及移除旧功能，具体如下：
PR #244: Corrected link to Prometheus Metrics Integration
PR #246: Make async retrofit call not make the request when circuit is open
PR #248: Removed rxjava2 dependency for time limiter
PR #253: Fixed documentation
PR #254: Additional factory methods for Micrometer CircuitBreakerMetrics
PR #271: Remove deprecated usage of Mockito Matchers
PR #276: Add response predicate to retry sync and async for enhancement
PR #277: Generate BOM for resilience4j
PR #281: Avoid creating unnecessary logging strings
PR #284: Avoiding calling bulkheadConfigSupplier needlessly
Issue #245; PR #260: Fix CircuitBreakerSubscriber for Reactor doesn’t count successes when using Mono/Flux.toFuture()
Issue #263; PR #264: Fix bulkhead on Single and Maybe

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