What is URL-Shortener

URL Shortener allows users to input a long URL and receive a shortened version of it.

Set-up

clone the repo

Run using Docker :

docker-compose up

OR

Start Redis:

docker run -d -p 6379:6379 --name redis redis

install go dep

go mod tidy

run the server

go run main.go

Server starts on http://localhost:8080

Teck used :

• Go
• Redis
• Docker
• HTML, CSS, JS (This part was vibecoded)

How it work :

• The Main concept is taking some long URL like http://{domainName}/{LongURL} and make it http://localhost:8080/{shortURL}
• the request come with the longURL so i take this request and use fnv-1a hash for the longURL and it output somelong numbers too so i take the first 6 characters of the hex hash
• on redis i store the URL like this originalURL : ShortURL, ShortURL : OriginalURL for the mapping between the two of them so when i click the short URL it redirect to the longURL using this mapping on the handler

API endpoints

1- POST /shorten : Create the shortURL

on the body json write

{
    "url": "" // here write the longURL bet ""
}

Response

{
  "short_url": "http://localhost:8080/{SomeNumbers}"
}

2- GET /{hash} : redirect to original URL

Project Structure

url-shortener/
├── handlers/
│   └── handlers.go      # HTTP handlers (ShortenURL, RedirectURL)
├── models/
│   └── url.go           # Request/Response structs
├── router/
│   └── router.go        # Route registration + server start
├── storage/
│   └── redis-store.go   # Redis connection, SaveURL, GetOriginalURL
├── go.mod
└── main.go

AI Usage :

Frontend is completely vibe coded using opencode zen free models MiMo v2.5 high

it also modified the router/router.go to connect the front-end

this part is vibecoded

	http.HandleFunc("/app/", func(w http.ResponseWriter, r *http.Request) {
		http.ServeFile(w, r, "frontend/index.html")
	})

	http.HandleFunc("/app", func(w http.ResponseWriter, r *http.Request) {
		http.Redirect(w, r, "/app/", http.StatusTemporaryRedirect)
	})

Photos

write any longURL

The result