URL Shortener

A backend URL shortener built with Spring Boot, PostgreSQL, Redis, and Docker.

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Project Overview

Allows users to:

• Convert long URLs into short codes
• Redirect short URLs to original destinations
• Track number of clicks per URL
• Persist data in a relational database
• Prepare for caching with Redis

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Tech Stack

• Java 17
• Spring Boot
• Spring Web (REST API)
• Spring Data JPA
• PostgreSQL
• Redis
• Docker
• Maven

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Architecture

The project follows a layered architecture:

• Controller Layer

  • Handles HTTP requests and responses
  • Maps API endpoints

• Service Layer

  • Contains business logic
  • Handles URL generation and click tracking

• Repository Layer

  • Interfaces with PostgreSQL using Spring Data JPA

• Entity Layer

  • Represents database tables

• DTO Layer

  • Handles request and response objects

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Process

• Request { "url": "https://example.com" }

-Response { "originalUrl": "https://example.com", "shortCode": "abc123", "shortUrl": "http://localhost:8080/abc123" }

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