App-vNext/Polly

Polly is a resilience and fault-tolerance library for .NET that provides a unified API for implementing patterns like retry, circuit breaking, and rate limiting. The system has evolved to support a modern, high-performance resilience pipeline architecture that enables dynamic reloading, structured telemetry, and comprehensive chaos engineering capabilities. It also maintains backward compatibility with legacy policy-based APIs while offering new features such as hedging, bulkhead isolation, and dependency injection integration.

The project underwent a comprehensive architectural overhaul, introducing a new V8 resilience API centered on the ResiliencePipeline and a modular component system. This period saw the removal of legacy .NET framework support and the addition of advanced strategies like hedging, rate limiting, and chaos engineering via the Simmy library.

98 changes

This period focused on implementing core chaos engineering logic for the Simmy module, specifically adding helpers for failure injection and weighted outcome selection. Concurrently, the team expanded test coverage across utility classes, exception handling, and registry configurations to ensure robustness.

4 changes

App-vNext/Polly was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.