gofiber/fiber

Overview

gofiber/fiber is an open-source web framework for the Go programming language, engineered for high performance and minimal resource consumption. It distinguishes itself by offering an API that closely mirrors Express.js's interface, a popular Node.js framework, which can accelerate the learning curve for developers transitioning from JavaScript environments. Fiber is built on top of Fasthttp, a high-performance HTTP engine for Go, rather than Go's standard net/http package. This architectural choice contributes to its reported speed and efficiency.

The framework is particularly well-suited for scenarios requiring rapid development and high throughput, such as building RESTful APIs, modern web applications, and efficient microservices. Its design prioritizes developer experience through a clear, intuitive API for routing, middleware management, request parsing, and response generation. Fiber provides a comprehensive set of features out-of-the-box, including robust routing, support for various template engines, static file serving, and a flexible middleware system. Developers can easily integrate third-party libraries for tasks like database interaction, authentication, and validation, making it a versatile choice for a wide range of web projects.

Fiber's focus on performance is a key differentiator. Benchmarks often show Fiber outperforming other Go web frameworks in terms of requests per second and memory usage, owing to its underlying Fasthttp engine and optimized internal mechanisms. This makes it an attractive option for applications under heavy load or those deployed in resource-constrained environments. Beyond raw speed, Fiber also emphasizes a low memory footprint, which can lead to cost savings in cloud deployments and more efficient resource utilization. The framework maintains clear and extensive gofiber/fiber documentation, providing examples and detailed explanations for its various components and usage patterns.

For developers familiar with Go, Fiber offers a familiar yet enhanced approach to web development. For those new to Go but experienced with frameworks like Express.js, the transition can be notably smoother due to the similar API paradigms. This blend of performance, developer-friendliness, and comprehensive features positions Fiber as a strong contender for modern Go web development, from simple prototypes to complex, production-grade systems.

Key features

• Express.js-inspired API: Offers a familiar and intuitive interface for developers experienced with Node.js's Express.js, simplifying the learning curve for Go web development.
• High performance: Built on Fasthttp, an optimized HTTP engine, leading to superior request handling speeds and lower memory consumption compared to many other Go frameworks.
• Robust routing: Supports flexible routing with parameters, groups, and sub-routers, allowing for organized and scalable API design.
• Middleware support: Provides a powerful system for middleware, enabling request processing tasks like authentication, logging, and data manipulation before reaching route handlers.
• Template engine integration: Compatible with various Go template engines, facilitating server-side rendering for traditional web applications.
• Static file serving: Includes built-in capabilities for serving static assets such as HTML, CSS, JavaScript, and images efficiently.
• Body parser: Automatically parses request bodies in various formats, including JSON, XML, and URL-encoded data, simplifying data extraction.
• WebSocket support: Offers support for WebSocket connections, enabling real-time communication features in web applications.
• Error handling: Provides a centralized error handling mechanism to manage and respond to application errors gracefully.
• Extensibility: Designed to be highly extensible, allowing developers to easily integrate custom logic, plugins, and third-party libraries.

Pricing

As of May 2026, gofiber/fiber is a fully open-source project distributed under the MIT License. It is free to use for any purpose, including commercial applications, without licensing fees or restrictions. All features and components of the framework are available without cost.

Common integrations

Fiber's design facilitates integration with a wide array of Go libraries and external services. Key integration patterns include:

• Database ORMs/Drivers: Integrating with SQL databases (e.g., PostgreSQL, MySQL, SQLite) using ORMs like GORM or Ent, or directly using database drivers.
• Authentication & Authorization: Implementing user authentication with JWT (JSON Web Tokens) libraries or integrating with OAuth providers. Fiber's middleware system is well-suited for adding authentication layers.
• Validation: Incorporating data validation libraries (e.g., go-playground/validator) to ensure incoming request data meets specified criteria.
• Real-time communication: Utilizing its WebSocket support to integrate with front-end frameworks for live updates and interactive experiences.
• Logging: Integrating with structured logging libraries like Logrus or Zap for enhanced application monitoring and debugging.
• Configuration Management: Using libraries such as Viper to manage application settings and environment variables.
• Caching: Integrating with in-memory caches or external caching solutions like Redis for performance optimization.

Alternatives

When considering gofiber/fiber for web development in Go, several other frameworks and approaches offer similar or complementary functionalities:

• Gin: A high-performance HTTP web framework, also built for speed, with a focus on ease of use and a similar API style.
• Echo: Another high-performance, minimalist Go web framework known for its routing capabilities and extensibility.
• Standard Library (net/http): Go's built-in HTTP package provides core functionalities for building web servers without external dependencies, offering maximum control.

Getting started

To begin building a web application with Fiber, you first need to install the package and then create a simple server. This example demonstrates a basic "Hello, World!" application that listens on port 3000.

package main

import (
	"log"

	"github.com/gofiber/fiber/v2"
)

func main() {
	// Create a new Fiber instance
	app := fiber.New()

	// Define a route for the GET HTTP method to the root path "/"
	// When a request comes in, it sends "Hello, World!" as the response.
	app.Get("/", func(c *fiber.Ctx) error {
		return c.SendString("Hello, World!")
	})

	// Start the server on port 3000
	// Log any errors that occur during server startup
	log.Fatal(app.Listen(":3000"))
}

Steps to run this example:

1. Initialize a Go module: If you haven't already, create a new directory for your project and initialize a Go module:
   mkdir my-fiber-app
cd my-fiber-app
go mod init my-fiber-app
2. Install Fiber: Download and install the Fiber package:
   go get github.com/gofiber/fiber/v2
3. Create main.go: Save the code above into a file named main.go within your project directory.
4. Run the application: Execute the Go program:
   go run main.go
5. Access in browser: Open your web browser and navigate to http://localhost:3000. You should see the text "Hello, World!" displayed.

This example sets up a basic web server. From here, you can expand by adding more routes, implementing middleware, connecting to databases, and integrating other services to build more complex applications using the gofiber/fiber API reference.