Undo reverts the last Limit() call, returning consumed allowance

UpdateRate allows to update the allowed rate

fetchPrometheusLines does mocked HTTP GET request against real prometheus handler to get the same view that Prometheus would have while scraping this

preRegisterMethod is invoked on Register of a Server, allowing all gRPC services labels to be pre-populated.

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Collect is called by the Prometheus registry when collecting metrics. The implementation sends each collected metric via the provided channel and retu

503=服务不可用,500=服务内部错误,401=未登录,403=禁止访问（可带原因）,400=参数错误,429=并发限制,200=OK

Describe sends the super-set of all possible descriptors of metrics collected by this Collector to the provided channel and returns once the last desc

Describe sends the super-set of all possible descriptors of metrics collected by this Collector to the provided channel and returns once the last desc

Fail records a failure in the current bucket.

Head wraps http.Client Head()

IncludingSpans binds a IncludeSpanFunc to the options

500 INTERNAL 服务端内部错误，一般是 BUG

400 INVALID_ARGUMENT 客户端使用了错误的参数

LogPayloads returns an Option that tells the OpenTracing instrumentation to try to log application payloads in both directions.

NewHostBasedHTTPClient provides a circuit breaker wrapper around http.Client. This client will use one circuit breaker per host parsed from the reques

404 NotFound 未找到资源

OpenTracingClientInterceptor returns a grpc.UnaryClientInterceptor suitable for use in a grpc.Dial call. For example: conn, err := grpc.Dial( addres

OpenTracingServerInterceptor returns a grpc.UnaryServerInterceptor suitable for use in a grpc.NewServer call. For example: s := grpc.NewServer( ...,

OpenTracingStreamClientInterceptor returns a grpc.StreamClientInterceptor suitable for use in a grpc.Dial call. The interceptor instruments streaming

OpenTracingStreamServerInterceptor returns a grpc.StreamServerInterceptor suitable for use in a grpc.NewServer call. The interceptor instruments strea

403 PERMISSION_DENIED 这可能是因为客户端没有权限

Post wraps http.Client Post()

PostForm wraps http.Client PostForm()

RegisterExampleServiceHandlerFromEndpoint is same as RegisterExampleServiceHandler but automatically dials to "endpoint" and closes the connection whe

Reset resets the count of all buckets.

Resolve to resolve the service from etcd

429 RESOURCE_EXHAUSTED 超过资源限额或频率限制