MERN E-commerce Platform
A scalable multi-vendor e-commerce platform built using the MERN stack. Features include JWT and OAuth authentication with role-based access control, integrated Stripe and PayPal for secure payment processing, real-time chat using Socket.IO for buyer-seller communication, and optimized performance with Cloudinary image handling and efficient API design.
Tech Stack
Client Requirements
Multi-vendor marketplace with separate dashboards
JWT and OAuth authentication with role-based access
Integrated Stripe and PayPal payment processing
Real-time chat between buyers, sellers, and admin
Product management with bulk upload via Excel
Cloudinary integration for optimized image handling
Challenges & Solutions
Real-time Chat Scalability
The Problem
Managing multiple concurrent chat sessions between vendors, users, and admin required efficient Socket.IO implementation.
The Solution
Implemented room-based Socket.IO architecture with Redis adapter for horizontal scaling and message persistence.
Payment Integration Complexity
The Problem
Handling multiple payment gateways (Stripe and PayPal) with different webhook structures and error handling.
The Solution
Created a unified payment adapter pattern with standardized response formats and comprehensive webhook validation.
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