How .NET 10 speeds up API validation without code changes
Model validation has been a reliable but costly part of every ASP.NET Core request. In .NET 10 and C# 14, validation gets faster through precomputed metadata, typed execution, and fewer allocations. This post explains what changed under the hood, shows small runnable examples, and includes a micro-benchmark you can adapt. You will also see how to write lean custom validators and pair validation with faster JSON parsing. The end result is tighter p95 and p99 latency without rewriting your controllers.
