Go Round Robin Load Balancer

A lightweight HTTP reverse proxy load balancer written in Go that distributes incoming requests across multiple backend servers using a round-robin algorithm.

This project is built using only Go’s standard library and is designed as a clean educational implementation of core load balancing concepts.

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Overview

This load balancer listens on a local port and forwards incoming HTTP requests to a pool of backend servers. Each request is routed to the next server in sequence using round-robin selection.

It demonstrates:

• Reverse proxying
• Interface-based server abstraction
• Round-robin scheduling
• Basic request forwarding
• Minimal, dependency-free design

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Features

• HTTP reverse proxy using net/http/httputil
• Round-robin load distribution
• Pluggable server interface
• Simple and extensible architecture
• Zero third-party dependencies

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Architecture

Server Interface

Each backend server implements:

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type Server interface {
    Address() string
    IsAlive() bool
    Serve(http.ResponseWriter, *http.Request)
}