fiber

name	fiber
description	Fiber Express-inspired Go web framework. Use for Go APIs.

Fiber

Fiber is an Express.js inspired framework for Go, running on fasthttp (the fastest HTTP engine for Go). v3 brings generic support and better middleware.

When to Use

• Benchmarks: You need the absolute highest raw throughput.
• Node.js Background: The API (app.Get("/", ...) feels like Express).
• Zero Allocation: Obsessive memory optimization.

Core Concepts

Fasthttp

Doesn't use net/http. Much faster but incompatible with some standard library middlewares.

Prefork

Spawn multiple processes (SO_REUSEPORT) to utilize all cores.

Best Practices (2025)

Do:

• Use v3: For stable generic support.
• Be careful with Prefork: Can cause issues with socket connections if not handled.
• Use Built-in Middleware: Cache, Compress, CORS are highly optimized.

Don't:

• Don't hold references: fasthttp reuses context objects. Copy strings if you need them after handler returns.

References

• Fiber Documentation