Fullstack Next.js on Cloudflare

この紹介文は現在英語版のみです。

Production-ready Next.js 15 + Cloudflare Workers template with D1 database, R2 storage, Better Auth, and Server Actions.

Overview

A modern, full-stack Next.js 15 template built specifically for Cloudflare’s edge computing platform. This production-ready template combines the power of Next.js with Cloudflare Workers, D1 database, R2 storage, and Better Auth to create a complete development solution with automated CI/CD and generous free tiers.

Built by Muhammad Arifin, this template leverages a feature-based/module-sliced architecture for better maintainability and scalability, making it perfect for building modern web applications that need global performance and edge-first deployment.

Key Features

• 🚀 Next.js 15 + App Router: Latest Next.js with React Server Components, Server Actions, and optimized routing
• ⚡ Cloudflare Workers: Edge-native runtime with global deployment and generous free tiers
• 🗄️ Database Integration: Cloudflare D1 (SQLite) with Drizzle ORM for type-safe database operations
• 📁 File Storage: Cloudflare R2 for scalable object storage and media handling
• 🔐 Authentication: Better Auth with secure session management and OAuth providers
• 🤖 AI Integration: Built-in AI summarization service using Cloudflare Workers AI
• 🏗️ Module Architecture: Feature-based structure with clear separation of concerns
• 🔧 Developer Experience: Wrangler CLI, TypeScript typegen, and hot module reloading
• 🚀 CI/CD Pipeline: Automated deployment with GitHub Actions
• 📊 Observability: Built-in analytics, error tracking, and performance monitoring

Architecture Benefits

• 🎯 Feature Isolation: Each module contains its own actions, components, and logic
• 🔄 Server Actions: Modern data mutations with automatic revalidation
• 📊 React Server Components: Optimal performance with server-side rendering
• 🛡️ Type Safety: End-to-end TypeScript from database to UI
• 🧪 Testable: Clear separation of concerns makes testing easier

Project Structure

This template uses a feature-based/module-sliced architecture for better maintainability and scalability:

src/
├── app/                    # Next.js App Router
│   ├── (auth)/            # Auth-related pages
│   ├── api/               # API routes (for external access)
│   │   └── summarize/     # AI summarization endpoint
│   ├── dashboard/         # Dashboard pages
│   └── globals.css        # Global styles
├── components/            # Shared UI components
├── constants/             # App constants
├── db/                    # Database configuration
│   ├── index.ts          # DB connection
│   └── schema.ts         # Database schemas
├── lib/                   # Shared utilities
├── modules/               # Feature modules
│   ├── auth/             # Authentication module
│   │   ├── actions/      # Auth server actions
│   │   ├── components/   # Auth components
│   │   ├── hooks/        # Auth hooks
│   │   ├── models/       # Auth models
│   │   ├── schemas/      # Auth schemas
│   │   └── utils/        # Auth utilities
│   ├── dashboard/        # Dashboard module
│   └── todos/            # Todo module
│       ├── actions/      # Todo server actions
│       ├── components/   # Todo components
│       ├── models/       # Todo models
│       └── schemas/      # Todo schemas
├── services/              # Business logic services
│   └── summarizer.service.ts  # AI summarization service
└── drizzle/              # Database migrations

Quick Start

Prerequisites

• Node.js 18+
• pnpm (recommended)
• Cloudflare account (free)

First-time Setup

1. Generate Cloudflare types:

   pnpm run cf-typegen

2. Setup database:

   pnpm run db:migrate:local

3. Build application:

   pnpm run build:cf

Daily Development

1. Start D1 access (Terminal 1):

   pnpm run wrangler:dev

2. Start Next.js with HMR (Terminal 2):

   pnpm run dev

After Schema Changes

1. Generate migration:

   pnpm run db:generate

2. Apply to local DB:

   pnpm run db:migrate:local

AI Development & Testing

Testing the AI API

⚠️ Authentication Required: Login to your app first, then test the API.

Browser Console (Easiest):

1. Login at http://localhost:3000
2. Open DevTools Console (F12)
3. Run:

fetch('/api/summarize', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  credentials: 'include',
  body: JSON.stringify({
    text: "Your text to summarize here...",
    config: { maxLength: 100, style: "concise" }
  })
}).then(r => r.json()).then(console.log);

AI Service Architecture

The AI integration follows a clean service-based architecture:

1. API Route (/api/summarize) - Handles HTTP requests, authentication, and validation
2. Authentication Layer - Validates user session before processing requests
3. SummarizerService - Encapsulates AI business logic
4. Error Handling - Comprehensive error responses with proper status codes
5. Type Safety - Full TypeScript support with Zod validation

Supported AI Models

• @cf/meta/llama-3.2-1b-instruct - Text generation (current)
• @cf/meta/llama-3.2-3b-instruct - More capable text generation
• @cf/meta/m2m100-1.2b - Translation
• @cf/baai/bge-base-en-v1.5 - Text embeddings
• @cf/microsoft/resnet-50 - Image classification

Deployment

Automatic Deployment (Recommended)

Push to main branch triggers automatic deployment via GitHub Actions:

git add .
git commit -m "feat: add new feature"
git push origin main

Deployment Pipeline:

1. ✅ Install dependencies
2. ✅ Build application
3. ✅ Run database migrations
4. ✅ Deploy to Cloudflare Workers

Manual Deployment

# Deploy to production
pnpm run deploy

# Deploy to preview environment
pnpm run deploy:preview

Performance & Monitoring

Built-in Observability:

• ✅ Cloudflare Analytics (enabled by default)
• ✅ Real User Monitoring (RUM)
• ✅ Error tracking and logging
• ✅ Performance metrics

Database Monitoring:

# Monitor database performance
wrangler d1 insights next-cf-app

# View database metrics in Cloudflare Dashboard
# Navigate to Workers & Pages → D1 → next-cf-app → Metrics

Development Scripts

Database Management

Deployment & Production

Roadmap

🤖 AI Features

• Add text translation service with @cf/meta/m2m100-1.2b
• Implement text embeddings for semantic search
• Add image classification API
• Create chat/conversation API with memory
• Add content moderation with AI classification

💳 Payments & Communication

• Implement email sending with Resend & Cloudflare Email Routing
• Implement international payment gateway with Polar.sh
• Implement Indonesian payment gateway (Xendit, Midtrans, or Duitku)

📊 Analytics & Performance

• Add Cloudflare Analytics integration
• Implement custom metrics tracking
• Add performance monitoring dashboard
• Create AI usage analytics and cost tracking

License

This project is licensed under the MIT License - see the LICENSE file for details.

© 2025 Muhammad Arifin. All rights reserved.

Ready to build your next application? Clone this template and start building with the power of Next.js 15 and Cloudflare’s edge network!