How to Implement HTTP Resilience with Polly in ASP.NET Core 10 Using C# – Retry, Circuit Breaker and Timeout (2026)
How to Implement HTTP Resilience with Polly in ASP.NET Core 10 Using C# – Retry, Circuit Breaker and Timeout (2026) Your catalog API can be healthy while a supplier endpoint briefly returns 503, a connection stalls, or a rate limit blocks the next request. Retrying everything immediately can turn that small problem into a larger outage. A useful HTTP resilience design limits how long callers wait, which failures are retried, and how much traffic reaches an unhealthy dependency. This guide builds HTTP resilience in ASP.NET Core 10 with Polly v8 , using a typed HttpClient and Microsoft.Extensions.Http.Resilience. The example reads a product from a separate, deliberately unreliable catalog API. You will configure retry, exponential backoff, jitter, a circuit breaker, concurrency protection and timeouts, then test the actual HTTP handler chain. Research and execution disclosure: documentation and package listings checked on 4 November 2026. Code was reviewed against official APIs, but was...
