funcretryWithBackoff()error{ // 创建一个指数退避策略 operation :=func()error{ returndoSomething() } // 设置最大重试时间和最大间隔 b := backoff.NewExponentialBackOff() b.MaxElapsedTime =10* time.Second// 最大重试时间 b.MaxInterval =5* t...
最重要的是可以使用 WithBackOffFunc 方法来设置回退延迟方法,这样就可以实现自定义的延迟计算。 接口设计 Retry 的接口设计也非常简洁,只有几个接口,但这些接口可以帮助我们完成大部分处理重试任务。Retry 的属性控制通过 Config 结构体来实现,通过 WithXXX 方法来设置属性。 配置选项 WithCallback: 设置回调函数。
retryOpts := []retry.Option{ retry.Attempts(3), // 重试3次 retry.Delay(1 * time.Second), // 每次重试间隔1秒 retry.DelayType(retry.BackOffDelay), // 间隔时间逐渐增加 } ``` ### 步骤四:执行重试操作 最后,我们执行重试操作,并处理最终结果: ```go err := retry.Do(sendRequest, retryOp...
Send out multiple requests and get the first back (only used for GET calls) Retry on errors Backoff Simple Example Use pester where you would use the http client calls. By default, pester will use a concurrency of 1, and retry the endpoint 3 times with the DefaultBackoff strategy of wai...
避免所有请求集中在同一时间sleep=addJitter(sleep,0.2)time.Sleep(sleep)}}func addJitter(d time.Duration,jitterFraction float64)time.Duration{jitter:=time.Duration(rand.Float64()*jitterFraction*float64(d))returnd-jitter/2+jitter// 保证结果为正数}func main(){retryWithExponentialBackoff(5,200*time...
里面的参数retryPolicy是一个json的字符串,这个就是service config: Copy retryPolicy = `{"methodConfig":[{"name":[{"service":"grpc-tutorial.05retry.hello.hello"}],"waitForReady":true,"retryPolicy":{"MaxAttempts":4,"InitialBakckoff":".01s","MaxBackoff":".01s","BackoffMultiplier":1.0,"...
grpcRetry.WithBackoff(grpcRetry.BackoffLinear(time.Second)), grpcRetry.WithCodes(codes.Internal, codes.Aborted, codes.Canceled, codes.DeadlineExceeded), grpcRetry.WithMax(2), grpcRetry.WithPerRetryTimeout(3*time.Second), )))iferr !=nil{ zap...
// Retrier implements the "retriable" resiliency pattern, abstracting out the process of retrying a failed action// a certain number of times with an optional back-off between each retry.// Retrier 实现了 "可重试 "弹性模式,将重试失败操作的过程抽象为// 重试一定次数,每次重试之间可选择后退。ty...
以下是一个常见的实现方法,结合了指数退避(Exponential Backoff)和最大重试次数的限制,以应对瞬态错误。 1. 基本重试机制 首先,我们可以定义一个简单的重试函数,它会尝试执行一个操作,并在失败时进行重试。 复制 package mainimport("errors""fmt""time")// Retry 重试机制func Retry(attemptsint,sleeptime.Duration...
backoff := float64(uint(1) << (uint(retry) - 1)) backoff += backoff * (0.1 * mathrand.Float64()) // 通过select 来监听重试时间和当前请求执行超时,重试是继续,请求超时则直接返回。 select { case <-time.After(time.Second * time.Duration(backoff)): continue case <-req.Context().Do...