Redis Caching API with Express.js and Axios

This project is a simple demonstration of how to cache API responses using Redis in a Node.js (Express) server. It uses the JSONPlaceholder API to fetch photo data and caches it for faster repeat access.

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✨ Features

• Fetch and cache list of photos (/photos?albumId=1)
• Fetch and cache individual photo by ID (/photos/:id)
• Caching powered by Redis with expiration time
• Simple and clean middleware logic
• Uses Axios for HTTP requests

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♻ Tech Stack

• Node.js
• Express.js
• Redis
• Axios
• CORS

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⚙ Setup Instructions

1. Clone the Repository

https://github.com/your-username/basic-redis-caching.git
cd basic-redis-caching

2. Install Dependencies

npm install

3. Setup Redis Locally (in short)

You can install Redis quickly depending on your OS:

• Windows: Use this guide
• macOS (Homebrew):

brew install redis
brew services start redis

• Ubuntu/Linux:

sudo apt update
sudo apt install redis-server
sudo systemctl enable redis-server.service

• Verify Redis:

redis-cli ping  # Output should be: PONG

Detailed Redis installation guide: https://redis.io/docs/getting-started/installation/

4. Start the Server

nodemon server.js

Server runs on http://localhost:3000

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📂 API Endpoints

GET /photos?albumId=1

• Fetches all photos from album 1
• Response is cached for 1 hour (3600s)

GET /photos/:id

• Fetches a single photo by ID
• Response is cached individually

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✉ Contributing

Pull requests welcome! For major changes, open an issue first to discuss what you want to change.

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❤️ Credits

Built by Dhaval Bhimani with ☕ and a lot of curiosity.

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👉 Related Links

• Redis Docs: https://redis.io/docs
• JSONPlaceholder API: https://jsonplaceholder.typicode.com
• Axios: https://axios-http.com
• Express: https://expressjs.com/