Titly

Titly is a high-performance URL shortener built with Go, Redis, SQLite, and SvelteKit.

Features

• Fast URL shortening and redirection
• Redis caching for low-latency lookups
• SQLite persistence
• Concurrent request handling using Go
• Returns an existing short URL when the same long URL is submitted
• Docker Compose setup for running the complete application

Architecture

Titly consists of three main components:

• Client — SvelteKit frontend
• Server — Go REST API
• Redis — Cache for short URL mappings

The server checks Redis first when resolving a short URL. On a cache miss, it falls back to SQLite and caches the mapping in Redis for 24 hours.

Tech Stack

• Backend: Go
• Frontend: SvelteKit
• Database: SQLite
• Cache: Redis
• Containerization: Docker & Docker Compose

API

The server exposes the following endpoints:

Method	Endpoint	Description
GET	/	Returns a welcome message
POST	/create-short-url	Creates or retrieves a short URL
GET	/:short-url	Redirects to the original URL

See the Server API Documentation for request and response details.

Running with Docker

Start the complete application using Docker Compose:

docker compose up --build

The services are available at:

• Client: http://localhost:4173
• Server: http://localhost:4000
• Redis: localhost:6379

To stop the application:

docker compose down

Project Structure

titly/
├── client/          # SvelteKit frontend
├── server/          # Go backend and API
├── docker-compose.yml
└── README.md

License

This project is available under the repository's license.