Retail & E-Commerce

From Struggling Legacy System to High-Performance Marketplace

How we helped RetailCo scale from 10K to 100K+ daily transactions with 40% faster performance

6 months
5 developers

Overview

RetailCo, a growing e-commerce business, was struggling with a legacy system that couldn't keep up with their rapid growth. Page load times exceeded 5 seconds, checkout failures were common, and the system frequently crashed during peak hours.

Technologies Used

Next.js 15PostgreSQLRedisStripeAWSDocker

The Challenge

RetailCo faced multiple critical issues that were threatening their business growth

Poor Performance

5+ second page load times causing 40% cart abandonment rate

Scalability Issues

System crashed during Black Friday sales, losing $500K+ in revenue

Payment Failures

15% of checkout attempts failed due to timeout issues

Manual Inventory

Inventory management required manual updates, causing overselling

Our Solution

We designed and implemented a modern, scalable architecture

1

Microservices Architecture

Separated the monolithic application into independent services for products, orders, payments, and inventory

Enabled independent scaling and faster deployments
2

Real-Time Inventory System

Implemented WebSocket-based real-time inventory tracking with automatic stock updates

Eliminated overselling and improved accuracy to 99.9%
3

Performance Optimization

Implemented Redis caching, CDN integration, and database query optimization

Reduced page load times from 5s to 1.2s
4

Robust Payment System

Integrated Stripe with retry logic, fraud detection, and comprehensive error handling

Reduced payment failures from 15% to < 1%

The Results

The new platform exceeded all expectations

Before
5+ sec
After
1.2 sec
Page Load Time
76%
Before
10K
After
100K+
Daily Transactions
10x
Before
40%
After
12%
Cart Abandonment
70%
Before
85%
After
99.9%
Uptime
17%

Additional Benefits

  • $2M+ additional annual revenue from improved conversion rates
  • Successfully handled 500K+ concurrent users during Black Friday
  • 90% reduction in customer support tickets related to checkout issues
  • Mobile conversion rate improved by 55%
SJ
"Working with JaziraTech was transformative for our business. They didn't just build us a new platform – they built us a competitive advantage. The attention to detail, technical expertise, and commitment to our success was outstanding. Our sales have tripled since launch, and the platform handles peak loads effortlessly."
Sarah Johnson
CTO, RetailCo

Technology Stack

Frontend

  • Next.js 15
  • React 19
  • TypeScript
  • Tailwind CSS

Backend

  • Node.js
  • Express
  • PostgreSQL
  • Redis

Infrastructure

  • AWS EC2
  • AWS S3
  • CloudFront CDN
  • Docker

Integrations

  • Stripe
  • SendGrid
  • Google Analytics
  • Sentry

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