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E-Commerce Mobile App: A Complete Case Study

DE
Dave Ejezie
Lead Developer
Published
Read Time
6 min read
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Mobile e-commerce app screenshots

Building a successful mobile e-commerce application requires careful planning, excellent user experience design, and robust technical implementation. Here's how we approached this challenging project.

Project Overview

Client: Fashion Retail Startup

Timeline: 4 months

Platform: iOS & Android (React Native)

Team: 3 developers, 1 designer, 1 PM

The Challenge

Our client needed a mobile app that would:

  • Provide seamless shopping experience
  • Handle high traffic during sales
  • Integrate with existing inventory systems
  • Support multiple payment methods

Technical Architecture

Technology Stack

💡
Framework
React Native with TypeScript
💡
State Management
Redux Toolkit
💡
Navigation
React Navigation 6
💡
Backend
Node.js with Express
💡
Database
PostgreSQL with Redis caching
💡
Payment
Stripe integration

Performance Optimizations

We implemented several key optimizations:

ProductList.tsx
// Optimized product list with lazy loading
import { FlashList } from '@shopify/flash-list';

const ProductList: React.FC = () => {
  const { data, fetchNext } = useInfiniteQuery(
    ['products'],
    fetchProducts,
    {
      getNextPageParam: (lastPage) => lastPage.nextCursor,
    }
  );

  return (
    <FlashList
      data={data?.pages.flatMap(page => page.products)}
      renderItem={({ item }) => <ProductCard product={item} />}
      onEndReached={fetchNext}
      estimatedItemSize={120}
    />
  );
};

Results

The app achieved remarkable success:

50%
Increase in mobile conversion rates
4.8/5
Average app store rating
200ms
Average load time
99.9%
Uptime during peak sales

This project demonstrated the power of combining great design with solid technical execution!