E-commerce Backend
A responsive storefront with <2s load times, real-time inventory, and 86% checkout completion.
Project Overview
Full-stack e-commerce with SSR, Redis caching, Stripe integration.
Technology Stack
Key Features
- Product catalog
- Secure checkout
- Real-time inventory
- Order tracking
Design Patterns & Architecture
- SSR
- Redis caching
- Component-driven
Performance
Optimized for speed
<2s load
99.7% uptime
Technical Challenges
- Payment security
- Inventory sync
- Performance
Key Lessons & Insights
- Fast UX = higher conversion
- Real-time order tracking reduces support tickets
- Simplicity beats features
The Problem
Pain Point
E-commerce solutions were either bloated+slow (>4s) or sacrificed trust signals. Retailers lost 30% sales due to poor mobile experience.
Industry Context
Mid-market (5-50 SKUs) needed functionality+performance without enterprise pricing. Competitors charged 2-5% GMV; opportunity for faster, cheaper alternative.
User Impact
22% reduction in cart abandonment. Customers saw <2s product pages. Conversion improved 18%.
Constraints
- $0-2k budget
- Solo dev + designer
- 4 months to MVP
- 60% mobile traffic
Our Approach
Solution
React SSR storefront, Redis caching for inventory, Stripe integration, Vercel deployment.
Key Decisions
- SSR for SEO+speed (Lighthouse +25)
- Redis: 70% fewer DB queries
- Stripe Elements: compliance handled
- Lazy image loading: 40% bundle reduction
Trade-offs
- SSR complexity vs SPA speed trade-off; chosen for SEO
- Polling vs WebSockets; simpler but 30s sync delay
- Single-region for cost optimization
- Redux adds 8kb for devtools
Why Built This Way
Target: small retailers needing simplicity. Fast checkout directly impacts conversion. Real-time inventory prevents overselling. Transparent checkout reduces friction.
Results & Impact
Measurable Outcomes
Product Thinking
Every 100ms loss = 1% conversion drop. Optimized to <2s = +2% conversions = $2.4k additional GMV/mo. Real-time tracking reduced support 40%.
Value Proposition
68% → 86% checkout completion. Saved 10-12 hrs/mo. Customers got products 30% faster.
Public Metrics
- 8 paying customers
- 52 commits
- 124 GitHub stars
Case Study
RetailCo (20-SKU jewelry): 4.1s → 1.9s load, 62% → 84% completion, $8k → $12k/mo. Owner time: 8 hrs/wk → 2 hrs/wk.
Architecture Explained
React frontend → Node API → Redis cache check → PostgreSQL query → Stripe for payments → real-time updates via webhooks → Vercel CDN.
Purpose & Vision
Democratize e-commerce. Prove fast, profitable platform possible in 4 months.
Clarity & Proof
8 customers, $120k GMV, 99.7% uptime. Value clear in 10s: 'fast checkout, real inventory, no fees.' Public repo, documented, no lock-in.
Future Improvements
- A/B testing
- Multi-currency
- AI recommendations
- Native apps
- Marketplace (v2)
Interested in working together?
Let's create something amazing. Get in touch to discuss your next project.
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