go-fasthttp: The Go Framework That Dominates Mixed Workloads (HttpArena Deep Dive)

If you've spent any time looking at Go HTTP performance, you've probably heard of fasthttp . It's been around for years, and its pitch is simple: it's way faster than net/http. But how does it actually stack up against everything else — not just Go frameworks, but Rust, C, Zig, and the whole zoo? I ran go-fasthttp through HttpArena , an open benchmark suite that tests frameworks across a bunch of realistic scenarios. Here's what I found. What is fasthttp? fasthttp is a high-performance HTTP library for Go built by Aliaksandr Valialkin . Unlike Go's standard net/http , it avoids allocations wherever possible. Instead of creating a new request/response object per request, it pools and reuses them. It's basically Go's answer to "what if we cared about garbage collection pressure?" The HttpArena implementation uses reuseport to spin up one listener per CPU core, which is a neat trick — each goroutine gets its own socket listener, reducing lock contention. The Numbers Let's get into it. Bas