.NET 9 vs Go for HTTP server performance

Claim: .NET 9 performs better than Go in HTTP requests per second (6211.65 vs 6027.31), mean latency (16.099ms vs 16.591ms), and data transfer rate (879.58 KB/sec vs 765.19 KB/sec).

Opposing view: The margin is narrow (~3% difference in req/sec). Results may vary significantly with different server implementations, middleware, serialization, and real-world workloads beyond simple HTTP handling.

Evidence needed: Reproduction with ApacheBench or wrk on standardized hardware, testing both minimal and realistic (JSON serialization, DB access) workloads.

Recipe: ApacheBench command provided (concurrency=100, 10,000 total requests) plus Go and C# server code snippets.

Source: https://rishidaftary.com/posts/golang-vs-dotnet9-benchmark