Categorygithub.com/changwh/go-commonlibrarynetnetutilbreaker
package
0.0.0-20190422025920-beccf3fe4313
Repository: https://github.com/changwh/go-common.git
Documentation: pkg.go.dev
Overview
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Dependencies
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Dependents
0
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# README

breaker

项目简介

提供熔断器功能，供各种client（如rpc、http、msyql）等进行熔断 提供Go方法供业务在breaker熔断前后进行回调处理

编译环境
  1. 请只用golang v1.8.x以上版本编译执行。
依赖包
  1. 无
配置说明
  1. NewGroup(name string,c *Config)当c==nil时则采用默认配置
  2. 可通过breaker.Init(c *Config)替换默认配置
  3. 可通过group.Reload(c *Config)进行配置更新
  4. 默认配置如下所示： _conf = &Config{ Window: xtime.Duration(3 * time.Second), Sleep: xtime.Duration(100 * time.Millisecond), Bucket: 10, Ratio: 0.5, Request: 100, }
测试
  1. 执行当前目录下所有测试文件，测试所有功能

# Functions

Go runs your function while tracking the breaker state of default group.
Init init global breaker config, also can reload config after first time call.
NewGroup new a breaker group container, if conf nil use default conf.

# Constants

StateClosed when circuit breaker closed, request allowed, the breaker calc the succeed ratio, if request num greater request setting and ratio lower than the setting ratio, then reset state to open.
StateHalfopen when circuit breaker open, after slepp some duration, allow one request, but not state closed.
StateOpen when circuit breaker open, request not allowed, after sleep some duration, allow one single request for testing the health, if ok then state reset to closed, if not continue the step.

# Structs

Config broker config.
Group represents a class of CircuitBreaker and forms a namespace in which units of CircuitBreaker.

# Interfaces

Breaker is a CircuitBreaker pattern.