Polly 5.4.0

The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org. Prefix Reserved
There is a newer version of this package available.
See the version list below for details.
dotnet add package Polly --version 5.4.0
NuGet\Install-Package Polly -Version 5.4.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Polly" Version="5.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Polly --version 5.4.0
#r "nuget: Polly, 5.4.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Polly as a Cake Addin
#addin nuget:?package=Polly&version=5.4.0

// Install Polly as a Cake Tool
#tool nuget:?package=Polly&version=5.4.0

Polly is a .NET 4.5 / .NET Standard 1.1 library that allows developers to express resilience and transient fault handling policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation and Fallback in a fluent and thread-safe manner.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.1 is compatible.  netstandard1.2 was computed.  netstandard1.3 was computed.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 was computed.  netstandard2.1 was computed. 
.NET Framework net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Windows Phone wpa81 was computed. 
Windows Store netcore was computed.  netcore45 was computed.  netcore451 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2.4K)

Showing the top 5 NuGet packages that depend on Polly:

Package Downloads
Microsoft.Extensions.Http.Polly The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

The HttpClient factory is a pattern for configuring and retrieving named HttpClients in a composable way. This package integrates IHttpClientFactory with the Polly library, to add transient-fault-handling and resiliency through fluent policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/8af96e042134fb3b2f21df26dd0f32ea1c00dd37

Polly.Extensions.Http The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Polly.Extensions.Http is an extensions package containing opinionated convenience methods for configuring Polly policies to handle transient faults typical of calls through HttpClient.

Polly.Caching.Memory The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Polly.Caching.Memory is a plug-in for the .NET OSS resilience library Polly, supporting Microsoft.Extensions.Caching.Memory.MemoryCache as a provider for Polly's CachePolicy.


Common application functionality and features to be shared across the framework


Official .NET SDK for the Okta API

GitHub repositories (229)

Showing the top 5 popular GitHub repositories that depend on Polly:

Repository Stars
Integrate cutting-edge LLM technology quickly and easily into your apps
Open Source Web Application Framework for ASP.NET Core. Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET and the ASP.NET Core platforms. Provides the fundamental infrastructure, production-ready startup templates, application modules, UI themes, tooling, guides and documentation.
ASP.NET Boilerplate - Web Application Framework
API Support for your favorite torrent trackers
Full Modular Monolith application with Domain-Driven Design approach.
Version Downloads Last updated
8.4.0 1,659,876 5/10/2024
8.3.1 6,220,394 3/6/2024
8.3.0 4,389,329 2/5/2024
8.2.1 4,532,952 1/5/2024
8.2.0 7,808,060 11/14/2023
8.1.0 2,525,364 10/31/2023
8.0.0 6,645,482 9/28/2023
8.0.0-beta.2 47,116 9/8/2023
8.0.0-beta.1 8,664 8/31/2023
8.0.0-alpha.9 2,733 8/30/2023
8.0.0-alpha.8 33,198 8/8/2023
8.0.0-alpha.7 11,261 7/26/2023
8.0.0-alpha.6 38,554 7/14/2023
8.0.0-alpha.5 16,404 7/3/2023
8.0.0-alpha.4 3,482 6/26/2023
8.0.0-alpha.3 644 6/23/2023
8.0.0-alpha.2 6,604 6/21/2023
8.0.0-alpha.1 3,994 6/15/2023
7.2.4 29,849,588 6/14/2023
7.2.3 135,980,212 1/17/2022
7.2.2 101,613,084 4/11/2021
7.2.1 74,947,118 5/2/2020
7.2.0 41,395,024 11/27/2019
7.1.1 16,387,426 9/2/2019
7.1.0 95,091,092 3/13/2019
7.0.3 1,764,084 2/21/2019
7.0.2 968,462 2/11/2019
7.0.1 1,151,759 2/9/2019
6.1.2 11,495,849 11/27/2018
6.1.1 1,016,300 11/12/2018
6.1.0 9,500,152 7/15/2018
6.0.1 23,119,362 5/6/2018
6.0.0-v6alpha0001 10,270 5/3/2018
5.9.0 5,578,018 4/9/2018
5.8.0 4,706,978 1/31/2018
5.7.0 849,171 1/6/2018
5.6.1 1,564,900 11/29/2017
5.6.0 98,292 11/27/2017
5.5.0 1,167,170 11/3/2017
5.4.0 145,771 11/1/2017
5.3.1 4,006,174 8/6/2017
5.3.0 253,338 7/27/2017
5.2.0 587,182 6/28/2017
5.1.1-v5-x-cachealpha0001 56,163 6/2/2017
5.1.0 1,027,658 5/4/2017
5.0.6 1,018,396 2/11/2017
5.0.5 488,920 2/4/2017
5.0.3 853,962 1/6/2017
5.0.2-v5-0-alpha0001 18,840 11/22/2016
5.0.1-v5-0-alpha0001 20,393 10/25/2016
4.5.0-beta-netstandar-0001 30,307 9/6/2016
4.3.0 2,211,134 6/30/2016
4.2.4 51,936 6/17/2016
4.2.3 43,092 6/7/2016
4.2.2 19,235 6/2/2016
4.2.1 137,800 5/26/2016
4.2.0 210,110 4/14/2016
4.1.2 280,852 3/17/2016
4.1.1 36,107 3/11/2016
4.1.0 9,207 3/10/2016
4.0.0 88,638 2/18/2016
3.0.0 85,800 1/11/2016
2.2.7 68,069 1/1/2016
2.2.6 9,500 12/30/2015
2.2.5 17,474 12/28/2015
2.2.4 59,768 12/3/2015
2.2.3 220,077 8/9/2015
2.2.2 125,928 6/2/2015
2.2.1 86,846 2/15/2015
2.2.0 43,110 1/25/2015
2.1.0 30,141 11/28/2014
2.0.0 34,323 3/13/2014
1.1.0 10,976 6/16/2013
1.0.0 113,599 5/5/2013

v5.0 is a major release with significant new resilience policies: Timeout; Bulkhead Isolation; Fallback; Cache; and PolicyWrap.  See release notes back to v5.0.0 for full details.  v5.0.5 includes important circuit-breaker fixes.

    - Add CachePolicy: cache-aside pattern, with interfaces for pluggable cache providers and serializers.
    - Bug fix: Sync TimeoutPolicy in pessimistic mode no longer interposes AggregateException.
    - Provide public factory methods for PolicyResult, to support testing.
    - Fallback delegates can now take handled fault as input parameter.

    - Make ISyncPolicy<TResult> public
    - (Upgrade solution to msbuild15)

    - Fix ExecuteAndCapture() usage with PolicyWrap   
    - Allow Fallback delegates to take execution Context
    - Provide IReadOnlyPolicyRegistry interface

    - Add PolicyRegistry for storing and retrieving policies.
    - Add interfaces by policy type and execution type.
    - Change .NetStandard minimum support to NetStandard1.1.

    - Allow different parts of a policy execution to exchange data via a mutable Context travelling with each execution.

    - Update NETStandard.Library dependency to latest 1.6.1 for .NetStandard1.0 target.  Resolves compatibility for some Xamarin targets.

    - Bug fix: Prevent request stampede during half-open state of CircuitBreaker and AdvancedCircuitBreaker.  Enforce only one new trial call per break duration, during half-open state.
    - Bug fix: Prevent duplicate raising of the onBreak delegate, if executions started when a circuit was closed, return faults when a circuit has already opened.
    - Optimisation: Optimise hotpaths for Circuit-Breaker, Retry and Fallback policies.
    - Add NoOpPolicy: NoOpPolicy executes delegates without intervention; for eg stubbing out Polly in unit testing.

    5.0.4 pre
    - (.NET40Async package changes only)

    5.0.3 RTM
    - Refine implementation of cancellable synchronous WaitAndRetry
    - Minor breaking change: Where a user delegate does not observe cancellation, Polly will now honour the delegate's outcome rather than throw for the unobserved cancellation (issue 188).

    5.0.2 alpha
    - .NETStandard1.0 target: Correctly state dependencies.
    - .NETStandard1.0 target: Fix SemVer stamping of Polly.dll.
    - PCL259 project and target: Remove, in favour of .NETStandard1.0 target.  PCL259 targets are still supported, via .NETStandard1.0 target.
    - Mark Polly.dll as CLSCompliant.
    5.0.1 alpha
    - Add a .NETStandard1.0 target.

    5.0.0 alpha
    A major release, adding significant new resilience policies:
    - Timeout policy: allows timing out any execution
    - Bulkhead isolation policy: limits the resources consumable by governed actions, such that a faulting channel cannot cause cascading failures.
    - Fallback policy: provides for a fallback execution or value, in case of overall failure
    - PolicyWrap: allows flexibly combining Policy instances of any type, to form an overall resilience strategy.

    Other changes include:
    - Add PolicyKeys and context to all policy executions, for logging and to support later introduction of policy events and metrics.
    - Add CancellationToken support to synchronous executions.
    - Add some missing ExecuteAndCapture/Async overloads.
    - Remove invalid ExecuteAsync overloads taking (but not making use of) a CancellationToken
    - Provide .NET4.0 support uniquely through Polly.NET40Async package
    - Retire ContextualPolicy (not part of documented API; support now in Policy base class)
    - Discontinue .NET3.5 support

    - Added ability for policies to handle return results.  Optimised circuit-breaker hot path.  Fixed circuit-breaker threshold bug.  
    - Added overloads to WaitAndRetry and WaitAndRetryAsync methods that accept an onRetry delegate which includes the attempt count.
    - Cleaned up new Polly.Net40Async NuGet package, removing Polly.dll and unused framework folders.
    - Add new Polly.Net40Async project supporting async for .NET40 via Microsoft.Bcl.Async.  This is available as separate Nuget packages Polly.Net40Async and Polly.Net40Async-signed.

    - Allowed async onRetry delegates to async retry policies.

    - Added AdvancedCircuitBreaker - Thanks to @reisenberger and @kristianhald
    - Fixed an issue with the onReset delegate of the CircuitBreaker.
    - Add ExecuteAndCapture support with arbitrary context data - Thanks to @reisenberger
    - Add Wait and retry forever policy - Thanks to @nedstoyanov
    - Remove time-limit on CircuitBreaker state-change delegates - Thanks to @reisenberger
    - Add async support and circuit-breaker support for ContextualPolicy
    - Add manual control of circuit-breaker (reset and manual circuit isolation)
    - Add public reporting of circuit-breaker state, for health/performance monitoring
    - Add delegates on changes of circuit state - Thanks to @reisenberger
    - Add cancellation support for all async Policy execution - Thanks to @reisenberger
    - Fixes an issue where continueOnCapturedContext needed to be specified in two places (on action execution and Policy configuration), when wanting to flow async action execution on the captured context - Thanks to @reisenberger
    - Fixes excess line ending issues
    - Async sleep fix, plus added continueOnCapturedContext parameter on async methods to control whether continuation and retry will run on captured synchronization context - Thanks to @yevhen
    - Policies with a retry count of zero are now allowed
    - Add .NET Core support
    - Fix PCL implementation of `SystemClock.Reset`
    - Added ability to capture the results of executing a policy via `ExecuteAndCapture`
    - Added extra `NotOnCapturedContext` call to prevent potential deadlocks when blocking on asynchronous calls
    - Replaced non-blocking sleep implementation with a blocking one for PCL
    - Added Async Support (PCL)
    - PCL Profile updated from Profile78 ->  Profile 259
    - Added missing WaitAndRetryAsync overload
    - Added Async Support (.NET Framework 4.5 Only)
    - Added Portable Class Library
    - The "Polly" NuGet package is now no longer strongly named. The strongly named NuGet package is now "Polly-Signed"
    - Added additional overloads to Retry
    - Allow arbitrary data to be passed to policy execution