Go with Fiber Framework

Fiber is a Go web framework inspired by Express.js, built on top of Fasthttp — the fastest HTTP engine in Go. If you're coming from Node.js/Express, Fiber's API will feel immediately familiar while delivering Go-level performance. This guide covers building, structuring, and deploying Fiber applications on a VPS.

Project Setup

# Initialize Go module
mkdir fiber-app && cd fiber-app
go mod init github.com/yourname/fiber-app

# Install Fiber
go get github.com/gofiber/fiber/v2
go get github.com/gofiber/fiber/v2/middleware/logger
go get github.com/gofiber/fiber/v2/middleware/cors
go get github.com/gofiber/fiber/v2/middleware/recover
go get github.com/gofiber/fiber/v2/middleware/compress

Application Code

// main.go
package main

import (
    "log"
    "os"
    "os/signal"
    "syscall"

    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/logger"
    "github.com/gofiber/fiber/v2/middleware/cors"
    "github.com/gofiber/fiber/v2/middleware/recover"
    "github.com/gofiber/fiber/v2/middleware/compress"
)

type User struct {
    ID    int    `json:"id"`
    Name  string `json:"name"`
    Email string `json:"email"`
}

func main() {
    app := fiber.New(fiber.Config{
        Prefork:       false,        // Enable for multi-core (like cluster)
        ServerHeader:  "Fiber",
        StrictRouting: false,
        CaseSensitive: false,
        BodyLimit:     4 * 1024 * 1024, // 4MB
        ReadTimeout:   5 * 1000,
        WriteTimeout:  10 * 1000,
        IdleTimeout:   120 * 1000,
    })

    // Middleware
    app.Use(recover.New())
    app.Use(logger.New())
    app.Use(cors.New())
    app.Use(compress.New())

    // Routes
    app.Get("/health", func(c *fiber.Ctx) error {
        return c.JSON(fiber.Map{"status": "healthy"})
    })

    api := app.Group("/api")
    api.Get("/users", getUsers)
    api.Get("/users/:id", getUser)
    api.Post("/users", createUser)
    api.Put("/users/:id", updateUser)
    api.Delete("/users/:id", deleteUser)

    // Static files
    app.Static("/", "./public")

    // Graceful shutdown
    go func() {
        if err := app.Listen(getAddr()); err != nil {
            log.Fatalf("Server error: %v", err)
        }
    }()

    quit := make(chan os.Signal, 1)
    signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)