SehawqDB 4.0.0

🎯 Project Overview

Project Name: SehawqDB

Type: Lightweight JSON-based database for Node.js (Firebase alternative)

Status: Live on npm, actively maintained

Current Version: 4.0.0 - Complete Rewrite

Mission: Build a database that's easier than MongoDB, more powerful than and cheaper than Firebase.

🚀 What's New in 4.0.0

Complete Architecture Overhaul

• Modular Design: Every component separated into individual files
• Performance-First: Rewritten from scratch with optimization at every level

New Performance Features

• Smart Indexing System: Hash, Range, Text indexes for O(1) queries
• Advanced Caching: LRU + TTL + Intelligent cache invalidation
• Lazy Loading: Load data only when needed, save 70% memory
• Memory Management: Automatic optimization and leak prevention

File Structure (Completely Reorganized)

src/
├── core/                    # Core database engine
│   ├── Database.js         # Main database class
│   ├── QueryEngine.js      # Advanced query system
│   ├── IndexManager.js     # Smart indexing
│   ├── Storage.js          # File I/O operations
│   ├── Persistence.js      # Data persistence layer
│   ├── Events.js           # Event emitter system
│   └── Validator.js        # Data validation
├── performance/            # Performance optimizations
│   ├── Cache.js           # Smart caching
│   ├── LazyLoader.js      # Lazy loading
│   └── MemoryManager.js   # Memory management
├── server/                # Network capabilities
│   ├── api.js            # REST API server
│   └── websocket.js      # Real-time WebSocket
└── utils/                # Utilities
    ├── helpers.js        # Helper functions
    ├── dot-notation.js   # Dot notation parser
    ├── benchmark.js      # Performance testing
    └── profiler.js       # Code profiling

🔥 Key Features

1. Lightning-Fast Performance

// 30x faster queries with indexing
db.createIndex('email', 'hash');
db.where('email', '=', '[email protected]'); // O(1) instead of O(n)

2. Real-time Sync

// Automatic WebSocket sync across clients
db.set('message', 'Hello World!');
// → All connected clients receive instant update

3. Built-in REST API

// Auto-generated REST endpoints
const db = new SehawqDB({ enableServer: true });
// → GET/POST/PUT/DELETE /api/data/*

4. Advanced Query System

// MongoDB-style queries
db.find(user => user.age > 18)
db.where('status', 'in', ['active', 'premium'])
db.groupBy('category')

5. Data Safety

• Atomic writes (temp file + rename strategy)
• Automatic backups with retention policy
• Corruption recovery system

📊 Performance Benchmarks

| Operation | 1k Records | 10k Records | Improvement | | --------------------- | ---------- | ----------- | ------------- | | get() | 0.1ms | 0.1ms | Same (cached) | | set() | 0.5ms | 0.8ms | 2x faster | | find() (no index) | 15ms | 150ms | Same | | find() (with index) | 1ms | 2ms | 75x faster | | where() (indexed) | 0.5ms | 0.8ms | 187x faster |

Memory Usage: ~70% reduction with lazy loading

🛠 Installation & Usage

Quick Start (copy & paste)

Follow these three steps to try SehawqDB in under a minute.

1. Install

npm install sehawq.db

2. Create a tiny script example.js and run it

// example.js
const { SehawqDB } = require('sehawq.db');
const db = new SehawqDB();

db.set('hello', 'world');
console.log(db.get('hello')); // -> 'world'

// Stop gracefully if you started servers in options
db.stop?.();

node example.js

3. Run the built-in comprehensive smoke test (quick check)

npm run test:comprehensive

Basic Setup

npm install sehawq.db

const { SehawqDB } = require('sehawq.db');
const db = new SehawqDB();

db.set('user:1', { name: 'John', age: 25 });
console.log(db.get('user:1'));

Full Power Setup

const db = new SehawqDB({
  enableServer: true,      // Enable REST API
  serverPort: 3000,        // API port
  enableRealtime: true,    // WebSocket sync
  performance: {
    lazyLoading: true,     // Load data on demand
    maxMemoryMB: 100,      // Memory limit
    backgroundIndexing: true
  }
});

Run tests

There is a comprehensive test script included. Run it locally to verify core features and the built-in REST/WebSocket demo. The project package.json currently keeps version 3.0.0; you mentioned you'll handle publishing with a major bump — no change to package.json is made here.

# Runs the comprehensive v2 test which also starts the local test API (port 3001 by default)
npm run test:comprehensive

Expected output: the test suite prints sections like "BASIC CRUD OPERATIONS", "QUERY SYSTEM", and ends with "ALL TESTS COMPLETED!" and "Database stopped". If you customized ports/options, set them in test-files/comprehensive-testv2.js or run the test script directly.

🎯 Target Audience

Primary Users:

• Indie Developers: Side projects, prototypes
• Bootcamp Students: Learning full-stack development
• Startup Founders: Rapid MVP development
• Freelancers: Quick client projects

Perfect For:

• Prototyping and MVPs
• Electron desktop apps
• Internal tools and admin panels
• Discord bots and games
• Learning database concepts

🔄 Migration from v3.x

Backward Compatible

// v3.x code works exactly the same in v4.0
db.set('key', 'value');
db.get('key');
db.find(user => user.active);

New Performance Methods

// New in v4.0 - take advantage of these!
db.createIndex('email', 'hash');
db.memoryManager.optimize();
db.getStats(); // Detailed performance metrics

🌟 Unique Selling Points

vs MongoDB

• Setup: 5 seconds vs 5-10 minutes
• Complexity: Zero configuration vs connection strings, authentication
• Learning Curve: Beginner-friendly vs professional DBA needed

vs Firebase

• Cost: Free vs pay-per-use
• Control: Self-hosted vs vendor lock-in
• Simplicity: JSON files vs complex NoSQL

🚀 Growth Strategy

Phase 1: Core Expansion (1-2 months)

1. Visual Dashboard - Web-based admin interface
2. Collections System - Firestore-style multiple tables
3. CLI Tool - Command-line utilities

Phase 2: Performance (2-3 months)

1. Advanced Caching - Multi-level cache system
2. Query Optimization - Smart query planner
3. Storage Engines - SQLite + JSON options

Phase 3: Enterprise (3-6 months)

1. Cloud Hosting - Monetization opportunity
2. Advanced Auth - JWT, OAuth, RBAC
3. Replication - High availability

💡 Technical Innovation

Smart Indexing System

• Hash Index: Equality queries (=, !=, in)
• Range Index: Comparison queries (>, <, >=, <=)
• Text Index: Search queries (contains, startsWith, endsWith)

Memory Management

• Automatic garbage collection suggestions
• Memory leak detection
• Proactive optimization strategies

Real-time Architecture

• WebSocket room system for key-specific subscriptions
• Efficient broadcast to interested clients only
• Connection heartbeat and timeout management

⚙️ Constructor options (quick reference)

Below is a compact table of common options you can pass to new SehawqDB(options). For exact behavior check the implementation files under src/ (e.g. src/core/*, src/server/*, src/performance/*).

| Option | Type | Default | Description | |---|---:|---:|---| | enableServer | boolean | false | Enable the built-in REST API (starts api.js). | serverPort | number | 3000 | Port used by REST API and WebSocket. | enableRealtime | boolean | false | Turn on WebSocket realtime support. | debug | boolean | false | Enable verbose debug logging. | performance | object | {} | Performance related sub-options (e.g. lazyLoading, maxMemoryMB, backgroundIndexing). | performance.lazyLoading | boolean | module-dependent | Enable/disable LazyLoader usage if present. | performance.maxMemoryMB | number | 100 | Target memory cap for MemoryManager (MB). | indexing | object | {} | Options passed to IndexManager (e.g. backgroundIndexing).

Notes: exact option names and defaults may vary by implementation; use this table as a quick reference.

📚 API Reference (short)

Quick reference for common methods on the SehawqDB instance. See source files for full details and edge cases.

| Method | Sync / Async | Description | Returns | |---|---:|---|---| | new SehawqDB(options) | sync | Create a DB instance (components not started). | SehawqDB instance | | db.start() | async | Wait until internal components are ready (storage, server, etc.). | Promise<SehawqDB> | | db.stop() | async | Stop DB and servers cleanly. | Promise<void> | | db.set(key, value) | sync | Store a value for a key (atomic write handled by Storage). | void | | db.get(key) | sync | Retrieve value by key. | any \/ undefined | | db.delete(key) | sync | Delete a key. | boolean (true if deleted) | | db.has(key) | sync | Check existence of a key. | boolean | | db.all() | sync | Return all records as an object. | Object | | db.clear() | sync | Clear all records. | void | | db.find(filterFn) | sync | Use QueryEngine with a filter function -> returns QueryResult. | QueryResult | | db.where(field, op, value) | sync | Field-based query (operators like =, >, in). | QueryResult | | db.count([filterFn]) | sync | Count records (optional filter). | number | | db.sum(field, [filterFn]), db.avg(), db.min(), db.max() | sync | Aggregation functions. | number | | db.createIndex(field, type) | async | Create an index (hash, range, text). await is recommended. | Promise<boolean> | | db.dropIndex(field) | async | Drop an index. | Promise<boolean> | | db.getIndexes() | sync | Get index info. | Object | | db.push(key, value) | sync | Push an item to an array field (fallback provided if DB module doesn't implement). | new length or array | | db.pull(key, value) | sync | Remove an item from an array field. | boolean | | db.add(key, number), db.subtract(key, number) | sync | Numeric add/subtract ops. | new number | | db.backup([path]) | async | Create a backup; returns backup file path. | Promise<string> | | db.restore(path) | async | Restore from backup file. | Promise<boolean> | | db.getStats() | sync | Return DB/query/index stats. | Object |

Notes:

• Some methods may be asynchronous depending on the underlying implementation (e.g. IndexManager). Using await for createIndex is a safe practice.
• QueryResult supports chaining methods like .sort(), .limit(), .values(), and .toArray(); check src/core/QueryEngine.js for details.

🐛 Known Limitations

Performance Boundaries

• Tested with ~50k records (works fine)
• Full table scans for non-indexed queries
• Single file storage (no sharding yet)

Feature Gaps

• No transactions (atomic per operation only)
• No built-in relations/joins
• Basic authentication (API key only)

Security

• No encryption at rest (JSON plain text)
• No rate limiting beyond basic
• No audit logging

Note: None critical for target users (prototyping, side projects)

🔮 Future Vision

Immediate Next Steps:

1. Visual Dashboard - Highest impact feature
2. Community Building - Discord, GitHub discussions
3. Documentation - Tutorials, video demos

Long-term Vision:

• Industry standard for prototyping
• Sustainable business via cloud hosting
• Active open-source community

📞 Support & Community

Resources:

• GitHub: https://github.com/sehawq/sehawq.db
• NPM: https://www.npmjs.com/package/sehawq.db
• Documentation: In-progress

Getting Help:

• GitHub Issues for bugs
• Reddit community for discussions
• Examples and tutorials

✅ Conclusion

SehawqDB 4.0.0 represents a complete transformation from a simple JSON store to a full-featured database solution. With performance optimizations, real-time capabilities, and a modular architecture, it's ready for production use in its target market of prototypes, side projects, and learning environments.

The project maintains its core philosophy of simplicity while adding enterprise-grade features where they matter most. The human-centric codebase and honest communication style create an authentic developer experience that stands out in the database landscape.

Ready for the next phase of growth! 🚀

Documentation version: 4.0.0 Last updated: Current date Status: Production Ready