Talha Sajjad
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E-Commerce

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.

Personal Project
2024
Ongoing

Tech Stack

MongoDBExpress.jsReactNode.jsStripePayPalSocket.IOCloudinary

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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