Go + Fiber

Go + Fiber for Express-like APIs.

BackendModerate

Stack Components

LanguageGo 1.23

FrameworkFiber 3

DBpgx 5

DBPostgreSQL 16

Why

Fasthttp-based, Express-like API, zero allocation. Node.js, Go, and Python are the top 3 backend languages (Stack Overflow 2024).

Go's goroutines handle 100k+ concurrent connections per process; Node's event loop excels at I/O-bound workloads.

When

Use for Express migrants. Avoid for net/http compatibility.

How

1. go get github.com/gofiber/fiber/v3 2. Create Fiber app 3. Define routes 4. app.Listen(':8080') 5. Add environment configuration — cp .env.example .env && edit values 6. Run tests — npm test or pnpm test to verify setup 7. Deploy — git push to trigger CI/CD or manual deploy

Example

app := fiber.New() app.Get('/users', func(c fiber.Ctx) error { return c.JSON(200, users) })

Common Problems

⚠Fasthttp incompatibility — some middleware won't work
⚠Context reuse — don't store Ctx references
⚠Configuration drift between environments — use infrastructure-as-code (Terraform/Pulumi) to keep dev/staging/prod identical

Best Practices

✓Use fiber.Config for tuning
✓Prefer app.Use for global middleware
✓Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit

FAQ

What is Go + Fiber and what projects is it for?

Go + Fiber for Express-like APIs. It pairs layered technologies for end-to-end type safety and out-of-the-box deploys, fitting everything from MVPs to production SaaS.

How do I spin up a working demo with Go + Fiber in 10 minutes?

Two steps: (1) go get github.com/gofiber/fiber/v3; (2) Create Fiber app. Get the local dev server running, then wire one real data source to verify the end-to-end loop.

What is the most common pitfall with Go + Fiber and how do I avoid it?

The most common pitfall is: Fasthttp incompatibility — some middleware won't work. Avoid it by adding the matching checklist to your PR template and running type-check + lint + unit tests in CI — three gates before merge.

What are the best practices for Go + Fiber?

Best practices for Go + Fiber include: Use fiber.Config for tuning; Prefer app.Use for global middleware; Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit. The first one — "Use fiber.Config for tuning" — should be set up at project init to avoid costly rework later.

When should I NOT choose Go + Fiber?

Pick something else in three cases: (1) the team has zero experience with the core framework and the deadline is tight (learning-curve risk); (2) it's a pure content/marketing site (Astro is lighter); (3) you need very high throughput (>10k RPS) or strict-consistency microservices (Go/Rust). Go + Fiber shines for mid-to-high complexity full-stack and API work — don't over-engineer simple static pages with it.