Rohit Sharma’s Blueprint for Real-Time Social Commerce & Payment Infrastructure

Real-Time Commerce at Scale: Architectural Insights by Rohit Sharma

Modern e-commerce requires far more than static product grids. Social commerce platforms combine live interactive feeds, instant inventory allocation, and high-concurrency payment processing. Rohit Sharma, Team Lead at CodeQlik, engineered a high-volume wholesale e-commerce platform integrated with instant QR payment systems.

1. High-Concurrency WebSockets for Live Inventory Locking

When multiple users attempt to purchase high-demand stock simultaneously, classic database transactions can suffer race conditions. Rohit Sharma implemented:

• Redis Atomic Locks: Reserve inventory items in memory with 30-second atomic TTL locks while the user enters checkout.
• WebSocket Broadcasts: Notify online buyers in real-time when item availability changes without requiring page refreshes.

2. Secure Payment Gateway Integration (Stripe & Razorpay)

Handling money demands zero tolerance for transaction failures or security oversights:

• Webhook Signature Verification: Verify HMAC SHA256 signatures on every incoming payment webhook to defeat spoofed payment requests.
• Idempotency Key Handling: Ensure duplicate payment notifications never trigger double order processing or duplicate credit allocations.
• Automated Refund & Dispute Tracking: Streamlined webhooks for handling transaction reversals directly within vendor administrative dashboards.

3. Mobile QR Payment UX with React Native

Rohit Sharma led the engineering of a custom mobile QR payment flow:

• Camera scanner integration using react-native-vision-camera.
• Real-time deep linking to UPI & banking apps for instant 1-tap checkout.
• Sound effect and vibration haptic feedback upon payment confirmation.

Summary

Rohit Sharma’s full-stack architecture for payment gateways and social commerce platforms proves that speed, security, and delightful user experience can coexist at enterprise scale.