🔗 TinyURL Scalable Microservice

A robust, full-stack URL shortening service designed for high performance, scalability, and ease of deployment. This project demonstrates a microservices-ready architecture using Spring Boot, containerized with Docker, and utilizes a Hybrid Database approach (SQL + NoSQL) alongside Read-Aside Caching for optimal performance.

🏗 System Architecture

The system is designed to handle high read traffic (redirections) vs. write traffic (shortening) efficiently.

graph TD
    subgraph Client_Layer [Client Layer]
        User((User / Browser))
    end

    subgraph Docker_Stack [Dockerized Environment]
        App[Spring Boot Application]
        
        subgraph Caching [Speed Layer]
            Cache[(Redis Cache)]
        end

        subgraph Data_Layer [Hybrid Database Layer]
            SQL[(Postgres: User Auth)]
            NoSQL[(MongoDB: URL Mappings)]
        end
    end

    %% Flow of Data
    User -->|1. REST Request| App
    App <-->|2. Read-Aside| Cache
    App -->|3. Persistence| NoSQL
    App -->|4. User Mgmt| SQL
    
    %% Style
    style App fill:#e1f5fe,stroke:#01579b,stroke-width:2px
    style Cache fill:#ffebee,stroke:#c62828
    style SQL fill:#e3f2fd,stroke:#1565c0
    style NoSQL fill:#e8f5e9,stroke:#2e7d32

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🚀 Quick Start

docker-compose up --build

Service will be available at: http://localhost:8080.

🛠 Tech Stack

• Backend: Java 21, Spring Boot 3.2.3.
• NoSQL: MongoDB (Scalable URL storage).
• SQL: PostgreSQL (User management).
• Cache: Redis (Read-Aside strategy).
• DevOps: Docker & Docker Compose.