---
title: "How to configure a Circuit Breaker strategy in .NET using Polly?"  
description: "How to configure a Circuit Breaker strategy in .NET using Polly?"  
author: "Ravi Vishwakarma"  
published: 2026-08-14  
updated: 2026-08-14  
canonical: https://answers.mindstick.com/qa/117058/how-to-configure-a-circuit-breaker-strategy-in-net-using-polly  
category: "Polly"  
tags: ["csharp", "dotnet", "polly", "circuit-breaker", "architecture"]  
reading_time: 1 minute  

---

# How to configure a Circuit Breaker strategy in .NET using Polly?

The Circuit Breaker pattern isolates failing services to prevent cascading failures throughout a system. When failures cross a specified threshold, the circuit 'opens' and immediately rejects further calls without calling the underlying service.

## Configuring Circuit Breaker in Polly v8

You can configure an advanced circuit breaker using `CircuitBreakerStrategyOptions`.

### Code Example

```cs
var pipeline = new ResiliencePipelineBuilder()
    .AddCircuitBreaker(new CircuitBreakerStrategyOptions
    {
        ShouldHandle = new PredicateBuilder().Handle<Exception>(),
        FailureRatio = 0.5,
        SamplingDuration = TimeSpan.FromSeconds(10),
        MinimumThroughput = 8,
        BreakDuration = TimeSpan.FromSeconds(30)
    })
    .Build();

try
{
    await pipeline.ExecuteAsync(async token =>
    {
        await ExternalServiceCallAsync(token);
    });
}
catch (BrokenCircuitException ex)
{
    // Handle open circuit gracefully
}
```

### Circuit States

- **Closed:** Normal operation, requests pass through.
- **Open:** Circuit broken, requests fail fast.
- **Half-Open:** Trial state testing if downstream service recovered.


---

Original Source: https://answers.mindstick.com/qa/117058/how-to-configure-a-circuit-breaker-strategy-in-net-using-polly

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