Carter – ASP.NET Core Open-Source Contributions

Contributed fixes and performance improvements to Carter, an open-source ASP.NET Core library.

Identified and optimized a performance bottleneck in the response negotiation path by replacing LINQ-based lookups with array snapshots and a lightweight insertion sort. BenchmarkDotNet testing reduced the measured operation from 131 nanoseconds to 25 nanoseconds and reduced allocations from 456 bytes to 32 bytes in the tested scenario.

Also fixed a compatibility issue affecting .NET single-file deployments where DependencyContext could be unavailable. The implementation added a fallback for discovering loaded assemblies, allowing the library to work correctly in that deployment scenario.

The changes were submitted through GitHub pull requests and reviewed and merged as part of the project's normal open-source development workflow.