URL Redirect Service

A minimal Go application for handling URL redirects with the smallest possible memory footprint.

Features

• Host-based redirects: Redirects based on the incoming host header
• Path-based redirects: Redirects based on the URL path
• Proxy support: Handles X-Forwarded-Host and X-Forwarded-Uri headers from reverse proxies
• Protocol agnostic: Works with both HTTP and HTTPS requests
• Minimal memory usage: Uses only Go's standard library with no external dependencies

Current Redirect Rules

Host-based

• mail.terrible.dev → https://mail.tommyparnell.com

Path-based

• /test → https://blog.terrible.dev

Usage

1. Run the application:

   go run main.go
   

2. The server will start on port 8080

3. Test the redirects:

   # Test host-based redirect
   curl -H "Host: mail.terrible.dev" http://localhost:8080
   
   # Test path-based redirect
   curl http://localhost:8080/test
   
   # Test with X-Forwarded headers (simulating a reverse proxy)
   curl -H "X-Forwarded-Host: mail.terrible.dev" http://localhost:8080
   curl -H "X-Forwarded-Uri: /test" http://localhost:8080
   

Building

To build a standalone binary:

go build -o redirect main.go

Memory Optimization

This application is designed for minimal memory usage:

• Uses only Go's standard net/http package
• Single handler function for all routes
• Simple map lookups for redirect rules
• No external dependencies or frameworks
• Supports reverse proxy headers without additional overhead