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Polly Framework VS Microsoft Transient Fault Handling

Tags:

c#

.net

polly

application-blocks

I want to introduce transient fault handling in our .net application. I saw two nu-get packages are available as of now. One is Polly framework and the other one is Microsoft transient fault handling application block.

We investigated and saw both support asynchronous functions and different retry strategies. Polly framework also supports circuit breaker additionally. Could someone suggest which framework to use with some solid reasons. Also, it would be really helpful if pros and cons of both the frameworks along with support on internet community and scope for future extension and support can be highlighted. Thanks in advance.

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Demon Hunter Avatar asked Apr 06 '16 09:04

Demon Hunter

People also ask

What is Polly framework?

Polly is a . NET library that provides resilience and transient-fault handling capabilities. You can implement those capabilities by applying Polly policies such as Retry, Circuit Breaker, Bulkhead Isolation, Timeout, and Fallback. Polly targets . NET Framework 4.

What is the name of the Microsoft retry framework?

Microsoft Entity Framework provides facilities for retrying database operations.

Which of the following libraries framework helps to implement circuit breaker pattern?

Implement Circuit Breaker pattern with IHttpClientFactory and Polly. As when implementing retries, the recommended approach for circuit breakers is to take advantage of proven . NET libraries like Polly and its native integration with IHttpClientFactory .

What is Polly circuit breaker?

Polly is a . NET resilience and transient-fault-handling library that allows developers to express policies such as retry, circuit breaker, timeout, bulkhead isolation, and so forth. It is a mature library that is almost synonymous with app resiliency.

1 Answers

Answering as [disclosure] the lead dev on Polly under the App-vNext umbrella, I'll confine myself to factual answers to your question about support from the internet community and future prospects for the library:

  • In December 2015, stewardship of Polly was taken over by http://www.appvnext.com/, a consortium of developers from around the globe led by Carl Franklin of dotnetrocks.
  • Between December 2015 and April 2016, the App-vNext team made 10 new releases of the Polly library. New features include full async support (including cancellation and continuation context control), and a new AdvancedCircuitBreaker for high-throughput scenarios.
  • The future project Roadmap is public at https://github.com/App-vNext/Polly/wiki/Polly-Roadmap. Envisaged features see Polly grow towards a more fully-fledged fault tolerance library, as Hystrix is for Java.
  • EDIT AUTUMN 2016: Polly v5.0 has added a number of new resilience features: Bulkhead isolation; Fallback; Timeout any delegate; PolicyWrap.
  • EDIT: Polly is (since end October 2016) a DotNetFoundation-supported project.
  • EDIT May 2017: Microsoft patterns-and-practices team officially recommends Polly in place of Topaz in certain scenarios.
  • EDIT January 2018: Microsoft plans to make it easy to use Polly as outgoing middleware for HttpClient calls, in the HttpClientFactory planned for .NET Core 2.1.
  • EDIT May 2018: ASPNET Core 2.1 released with Polly as outgoing middleware for calls through HttpClient configured with IHttpClientFactory: ms doco; Polly doco.

The Polly team will welcome any community feedback from the SO community!

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mountain traveller Avatar answered Sep 17 '22 20:09

mountain traveller
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