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CircuitBreaker.Net

(★ 134)

Circuit Breaker pattern for .NET

파일 탐색기

최종 버전 다운로드 (.zip)

- NuGet.Config
- NuGet.exe
- NuGet.targets
- packages.config
- build.bat
- build.fsx
- build.sh
- CircuitBreaker.Net.nuspec
- CircuitBreaker.Net.Source.nuspec
- - CircuitBreaker.Net.Sample.csproj
  - ExternalService.cs
  - Program.cs
- - CircuitBreaker.cs
  - CircuitBreaker.Net.csproj
  - CircuitBreakerInvoker.cs
  - ICircuitBreaker.cs
  - ICircuitBreakerEventHandler.cs
  - ICircuitBreakerInvoker.cs
  - ICircuitBreakerSwitch.cs
  - InternalsVisibleTo.cs
  - TaskExtensions.cs
- CircuitBreaker.Net.snk
- - CircuitBreaker.Net.Tests.csproj
  - CircuitBreakerEventHandlerTests.cs
  - CircuitBreakerInvokerTests.cs
  - CircuitBreakerTests.cs
.gitignore
.travis.yml
CircuitBreaker.Net.sln
LICENSE
README.md

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/alexandrnikitin/CircuitBreaker.Net

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd CircuitBreaker.Net

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. .NET

보통 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
.NET SDK dotnet 명령어를 쓰기 위한 SDK입니다.

dotnet restore

프로젝트에 필요한 패키지를 내려받습니다.

dotnet run

프로젝트를 빌드하고 바로 실행합니다.

✅ dotnet run 실행 후 터미널에 나타나는 안내 메시지나 주소를 확인하세요.

// repository documentation

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# CircuitBreaker.Net
[![Build Status](https://travis-ci.org/alexandrnikitin/CircuitBreaker.Net.svg?branch=master)](https://travis-ci.org/alexandrnikitin/CircuitBreaker.Net) [![NuGet version](https://badge.fury.io/nu/CircuitBreaker.Net.svg)](https://badge.fury.io/nu/CircuitBreaker.Net)

## Overview

`CircuitBreaker.Net` is an implementation of the Circuit Breaker pattern for .NET.
This pattern can improve the stability and resiliency of your application, especially in SOAP, microservices and distributed environments. The pattern serves two main purposes: to isolate communication with third-party services, so that your application won't be affected by their fails. And to react to third-party services' fails: it could be a pause, throttling, fail-over, default behavior, etc.  
You can read about the pattern [on MSDN][MSDN] or from [Martin Fowler][fowler].

## Install

It's available via [a nuget package](https://www.nuget.org/packages/CircuitBreaker.Net)  
PM> `Install-Package CircuitBreaker.Net`

## Example Usage

```csharp
// Initialize the circuit breaker
var circuitBreaker = new CircuitBreaker(
    TaskScheduler.Default,
    maxFailures: 3,
    invocationTimeout: TimeSpan.FromMilliseconds(100),
    circuitResetTimeout: TimeSpan.FromMilliseconds(10000));

try
{
    // perform a potentially fragile call through the circuit breaker
    circuitBreaker.Execute(externalService.Call);
    // or its async version
    // await circuitBreaker.ExecuteAsync(externalService.CallAsync);
}
catch (CircuitBreakerOpenException)
{
    // the service is unavailable, failover here
}
catch (CircuitBreakerTimeoutException)
{
    // handle timeouts
}
catch (Exception)
{
    // handle other unexpected exceptions
}

```

## Why?

There are [not so many of them][nuget-curcuitbreaker]. I didn't find any that would suit me. [Polly][polly] seems the most mature from all of them but it has a locking nature and it doesn't provide a way to specify a separate `TaskScheduler` to execute actions. But that's a crucial aspect when you call a third-party service, because those calls could stuff your "main" `TaskScheduler`. Actually none of those libraries support injection of a `TaskScheduler`. `Helpful.CircuitBreaker` by RokitSalad isn't thread safe. `CircuitBreaker` by kylos101 executes actions on the same thread. `ManagedCircuitBreaker` by AsherW is a fork of `Polly` with emphasize on IoC containers. The code provided on MSDN isn't production ready and just a piece of code. And so on so forth. So that the yet another library was born. I hope you will find it helpful. :wink:

[nuget-curcuitbreaker]: https://www.nuget.org/packages?q=circuit+breaker
  [polly]: https://github.com/michael-wolfenden/Polly
  [fowler]: http://martinfowler.com/bliki/CircuitBreaker.html
  [MSDN]: https://msdn.microsoft.com/en-us/library/dn589784.aspx