Social Media Application

This project is a web application built with React and Node.js, featuring a login page, two main tabs (Recommendations and My Profile), and seamless navigation with persistent user sessions.

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Features

• Login System: Users can log in with a username and navigate between tabs after authentication.
• Recommendations Tab: Displays personalized recommendations for the logged-in user.
• My Profile Tab: Shows posts created by user.
• Logout Functionality: Securely logs the user out and redirects to the login page.
• Persistent Sessions: The logged-in state is maintained using localStorage across routes.
• Responsive Design: Styled with modern CSS, using gradients and consistent typography.
• Error Handling: Displays user-friendly error messages for invalid login credentials or other potential issues.
• Node.js Backend: Handles user authentication and data storage
• Distributed Architecture: Utilizes a MongoDB sharding setup for scalable data storage, replication for fault tolerance and Neo4j for graph database operations.

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MongoDB Sharded Cluster with Docker Compose

This project sets up a MongoDB sharded cluster using Docker Compose. It includes:

• A config server replica set (rs_config) for metadata management.
• Three shards, each configured as a replica set (rs_shard1, rs_shard2, rs_shard3).
• A mongos router to coordinate queries across the shards.

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Neo4j

This project uses Neo4j for graph database operations. It includes:

• Neo4j Docker Image: Runs Neo4j in a Docker container.
• Cypher Queries: Utilizes Cypher, the query language for Neo4j, to fetch posts using collaborative filtering and ranking system.

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Setup process

Docker setup

• Follow instructions in /docs/walkthrough.docx

Code Setup

• Clone the repository.

git clone https://github.com/deeprodge/Distributed-Content-Rec-engine.git

• Navigate to the project directory.
• Install dependencies.
• Open two terminals , one for the frontend and one for the backend
• Run the following commands in the frontend terminal

cd frontend
npm start

• Run the following commands in the backend terminal

cd backend
node server.js

Web Pages

Database