Introduction

What is Laju?

Laju (Indonesian for 'fast/swift') is a high-performance TypeScript web framework that combines the best of modern web technologies to deliver exceptional speed and developer experience.

Philosophy

Laju follows these principles:

1. Performance First — Every decision optimized for speed
2. Developer Experience — Modern tools, hot reload, TypeScript
3. Batteries Included — Auth, email, storage out of the box
4. Simple & Elegant — Clean architecture, easy to understand
5. Production Ready — Battle-tested components, proper error handling
6. AI-Native — Built for AI-assisted development

Tech Stack

Layer	Technology	Purpose
Server	HyperExpress	Ultra-fast HTTP server (258k req/s)
Frontend	Svelte 5	Modern reactive UI framework
Bridge	Inertia.js	Seamless client-server communication
Database	BetterSQLite3	High-performance embedded database
Query Builder	Kysely	Type-safe SQL query builder
Styling	TailwindCSS	Utility-first CSS framework
Build Tool	Vite	Lightning-fast builds
Language	TypeScript	Type-safe development

Performance

HTTP Server

Framework	Requests/sec	Avg Latency	vs Laju
Laju	258,611	1.52ms	Baseline
Pure Node.js	124,024	3.62ms	2.08x slower
Express.js	22,590	26.36ms	11.45x slower
Laravel	80	128.72ms	3,232x slower

Database (WAL Mode)

Operation	Default	WAL Mode	Improvement
Single Insert	4,678 ops/s	93,287 ops/s	19.9x faster
Batch Insert	2,895 ops/s	8,542 ops/s	2.95x faster
Concurrent Writes	89 ops/s	1,302 ops/s	14.6x faster

Architecture

┌─────────────────────────────────────────┐
│           CLIENT (Browser)              │
│    Svelte 5 + Inertia.js + TailwindCSS  │
└─────────────────────────────────────────┘
                    ↕
┌─────────────────────────────────────────┐
│           SERVER (Node.js)              │
│       HyperExpress + TypeScript         │
├─────────────────────────────────────────┤
│   Controllers → Services → Database     │
└─────────────────────────────────────────┘
                    ↕
┌─────────────────────────────────────────┐
│            DATA LAYER                   │
│    BetterSQLite3 (WAL) + Redis (Opt)    │
└─────────────────────────────────────────┘

Key Features

⚡ Exceptional Performance

• 2.08x faster than pure Node.js
• 11.45x faster than Express.js
• 258,611 requests/second throughput

🤖 AI-Native Architecture

• Standardized structure for AI understanding
• 3-agent workflow (INIT, TASK, MANAGER)
• Built-in documentation patterns

🔒 Built-in Authentication

• PBKDF2 password hashing (100,000 iterations)
• Session-based authentication
• Google OAuth integration
• Password reset functionality
• Email verification

🗄️ High-Performance Database

• BetterSQLite3 with WAL mode
• Kysely type-safe query builder
• Native SQLite for maximum performance
• Database migrations

📦 Complete Feature Set

• Email support (Nodemailer & Resend)
• S3/Wasabi file storage
• Rate limiting protection
• Redis caching (optional)
• Winston logging
• Hot reload in development

Use Cases

Laju is perfect for:

• High-traffic web applications — Handle 250K+ requests/second
• Real-time dashboards — Fast database queries and updates
• SaaS applications — Built-in auth, file storage, email
• API backends — RESTful APIs with rate limiting
• Content management — Fast reads with SQLite
• Prototypes & MVPs — Rapid development with modern stack

Comparison

vs Express.js

Feature	Express.js	Laju
Built-in Auth	❌ Manual	✅ Included
Frontend	❌ None	✅ Svelte 5
Database ORM	❌ None	✅ Kysely
TypeScript	⚠️ Manual	✅ Native
Performance	22k req/s	258k req/s

vs Next.js

Feature	Next.js	Laju
Framework	React	Svelte (simpler)
API Routes	Separate	Integrated
Auth	NextAuth setup	Built-in
Deployment	Vercel lock-in	Any server
Hydration	Required	Optional

vs Laravel

Feature	Laravel	Laju
Language	PHP	TypeScript
Performance	80 req/s	258k req/s
Frontend	Blade/Vue/React	Svelte 5
Deployment	Complex	Simple
AI-Native	❌	✅

Community

• GitHub: github.com/maulanashalihin/laju
• Website: laju.dev
• Twitter: @maulanashalihin

License

MIT License — Free for personal and commercial use.