CAT-COMMERCE: E-commerce built on Next.js, PostgreSQL, and Cloudflare Workers
An online store isn't just a pretty design. It's a database that never crashes, a checkout that never loses a sale, and a dashboard where you manage everything without depending on a developer. 35 tables, 40+ endpoints, serverless architecture that scales without you lifting a finger.
Commerce.Zero commission.
Technical architecture — what's under the hood
It's not magic. It's engineering.
Complete technology stack
| Technology | Version | What it does |
|---|---|---|
| Next.js | 16.2.10 | Frontend with App Router, SSR, and ISR — your store loads in milliseconds and Google indexes every product |
| Hono | 4.12.27 | Ultra-fast API on Cloudflare Workers — your endpoints respond from the edge, close to your customers |
| Neon PostgreSQL | Serverless | Serverless PostgreSQL with branching — each client has an isolated instance, no resource sharing |
| Drizzle ORM | 0.45.2 | Type-safe ORM with automatic migrations — zero SQL errors in production, TypeScript validates everything at compile time |
| NextAuth.js | v5 Beta | Authentication with Google, GitHub, and credentials — your customers log in however they prefer, with secure JWT sessions |
| Stripe + Polar | Stripe 20.1.0 | Two integrated payment gateways — Stripe for international sales, Polar for Peru. Verified webhooks and anti-duplicate protection on both |
| Cloudflare R2 | PushDuck 0.6.0 | Edge file storage — your product images are served fast with zero bandwidth costs |
| DeepSeek V4 Flash | OpenRouter | AI chatbot that knows your real catalog — recommends products, answers questions, and never returns an error even if the AI fails |
// It's not magic. It's engineering.
Production-Grade Rate Limiting
8 differentiated tiers with burst detection, ban escalation, and dual adapters (in-memory dev, Cloudflare KV production). Designed for real e-commerce traffic patterns — not generic middleware. Your store keeps running even when someone tries to abuse it.
Dual Database Driver
Two simultaneous Drizzle drivers: neon-http for fast reads and neon-serverless WebSocket for atomic transactions. This allows running on Cloudflare Workers without sacrificing transactional integrity — a product with variants, images, and prices is created in a single atomic operation.
ML Recommendation Engine
Standalone microservice with TensorFlow.js that trains on real user actions: views, wishlists, carts, and purchases. Recommendations carry an explicit reason — "based on your purchases", "similar to users like you" — it's not a black box.
SEO Built Into the Framework
Structured JSON-LD (Organization, Product, BreadcrumbList), bilingual sitemap with hreflang, 72+ pages with generateMetadata, ISR on products, hero image preload. This isn't a plugin you installed — SEO is woven into every route. Google understands your store without you having to explain anything.
Chatbot That Knows Your Catalog
Before each request, it loads categories, brands, and products from the database at runtime. A 170-line system prompt with business rules, sales tone, and structured responses. If the AI fails, it returns a fallback message — never a 500 error. Your customers always get an answer.
What's already protected
- Payment webhooks with cryptographic signature verification (Stripe)
- 8-tier rate limiting with abuse detection and temporary banning
- Passwords hashed with bcrypt (10 rounds) — not even we can read them
- Input validation with Zod on ALL endpoints
- Dual-layer admin route protection (Next.js middleware + Hono middleware)
- Atomic transactions — stock is deducted without overselling risk
- Partial unique index preventing duplicate payments on the same order
- JWT sessions via Auth.js with secure cookies
What's on the roadmap
- HTTP security headers (CSP, HSTS, X-Frame-Options) — prevent clickjacking and XSS
- CSRF protection on custom API routes
CAT-COMMERCE by the numbers
Product tour — this is what CAT-COMMERCE looks like in action
10 screens. What you see is what your customers will see.
Store homepage
Storefront with featured products, categories, and search — your customers find what they need in seconds.
Product page with variants
Product detail with images, sizes, colors, and real-time stock. No surprises.
Shopping cart
Cart with summary, quantities, and shipping estimate before payment. Transparent.
Stripe checkout
Checkout with Stripe Elements — your customers pay without leaving your store. Secure and fast.
Admin panel — dashboard
Dashboard with sales metrics, recent orders, and most viewed products. Everything at a glance.
Admin panel — product management
Full product CRUD with per-color images, variants, and multi-currency pricing.
Admin panel — orders
Order management with status history — from pending to delivered, every step recorded.
Mobile store view
100% responsive — your customers shop from their phone just as easily as from a computer.
Dark mode
Full dark mode across all components. Because your customers also shop at night.
Integrated AI chatbot
Chatbot that recommends products based on your real catalog. Like a salesperson that never sleeps.
Your path to a professional store — 4-week timeline
No surprises, no fine print. Here's what happens each week.
Week 0 — What you need to prepare
Week 0 — What you need to prepare
You prepare:
- High-quality photos of your products (800x800 px minimum)
- Your brand logo in SVG or PNG with transparent background
- Your domain (or we'll help you buy one)
- 3-5 main categories to organize your catalog
- ID document to verify your payment gateway account
Week 1 — Foundation
Week 1 — Foundation
What we do
We set up your CAT-COMMERCE instance: isolated database, domain, SSL, payment gateway, and admin panel. We load your first categories and test products so you can see how the system works.
What you see
Your online store with your domain, your logo, and your categories. No real products yet — this is the skeleton we build everything on.
Week 2 — Catalog and design
Week 2 — Catalog and design
What we do
We prepare your admin panel with your store's structure: categories, brand, colors, and typography. We teach you how to load your products from the panel — drag images, set prices, and write descriptions. If you'd rather have us load them, we use part of your included engineering hours (each hour handles ~15-20 products depending on complexity). Ideally, you load them yourself: nobody knows your products better than you.
What you see
Your store with the structure ready, design applied, and example products loaded. The admin panel is operational for you to start loading your products or for us to do it using your engineering hours.
Week 3 — Payments, shipping, and automations
Week 3 — Payments, shipping, and automations
What we do
We activate Stripe and Polar in production mode. We configure shipping zones, taxes, and transactional emails (purchase confirmation, shipping notification). We test the complete purchase flow 3 times.
What you see
Your fully functional store. You can make a test purchase end-to-end — from cart to email confirmation — and see your admin panel update in real time.
Week 4 — Launch
Week 4 — Launch
What we do
Final technical SEO tweaks, sitemap, robots.txt, and hreflang. We test speed with Lighthouse (target: 90+). We deliver full admin panel access and a 1-hour training session.
What you see
Your store ready to receive real customers. Indexed on Google, payments working, and you knowing exactly how to manage everything from the panel. No dependency on anyone.
Frequently asked questions about CAT-COMMERCE
How long does it take for a payment to reflect in my account?
Can I change plans after signing up?
What happens if I'm late with a monthly payment?
How customizable is my store's design?
How many products can I have? Does the store slow down with many?
Can I sell digital products in addition to physical ones?
How deep is the SEO? Isn't it just adding meta tags?
How does my store look on mobile?
What happens if my store grows to 10,000 products or more?
If I ever want to leave, can I take my data with me?
Commerce.Zero commission.
Stop depending on a marketplace. Your domain, your rules.
CAT-COMMERCE is your own software on your own domain — you're not renting space on someone else's platform. Zero commissions, no dependency on anyone's algorithm.
Includes: serverless hosting (Cloudflare Workers), isolated PostgreSQL database, admin dashboard, technical SEO, and 4-10 engineering hours per month. All for $200/month for the first 3 months.