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Built for performance, reliability, and offline-first applications.\n\n## 🚀 Features\n\n### Core Database Engine\n- **✅ Full PostgreSQL SQL Compatibility** - Complete SQL parsing and execution\n- **✅ ACID Transactions** - Multi-version concurrency control (MVCC) with isolation\n- **✅ Advanced Schema Management** - ALTER TABLE, constraints, foreign keys with referential actions\n- **✅ Comprehensive Data Types** - All PostgreSQL data types including JSONB, arrays, timestamps\n- **✅ Query Optimization** - Cost-based query planner with JOIN optimization\n- **✅ Advanced Indexing** - B-tree, hash, partial, and composite indexes\n- **✅ Functions & Triggers** - User-defined functions and trigger system\n- **✅ Views & Subqueries** - Complex query support with materialized views\n\n### Production Features\n- **✅ PostgreSQL Wire Protocol** - Full pg client library compatibility\n- **✅ Clustering & Replication** - Multi-node clustering with automatic failover\n- **✅ Connection Pooling** - Enterprise-grade connection management\n- **✅ Schema Migrations** - Version-controlled database migrations\n- **✅ Encrypted Storage** - AES-256-GCM encrypted file-based storage\n- **✅ Real-time Sync** - WebSocket-based synchronization between instances\n- **✅ Performance Monitoring** - Built-in metrics and query performance tracking\n\n## 📦 Installation\n\n```bash\nnpm install @rai/raidb\n```\n\n## 🏃 Quick Start\n\n### Embedded Mode (In-Process)\n\n```javascript\nimport { RAIDB } from '@rai/raidb';\n\n// Initialize embedded database\nconst db = new RAIDB({\n  dataPath: './my-app-data',\n  encryptionKey: 'your-32-char-encryption-key-here',\n  performance: {\n    cacheSize: '256MB',\n    walMode: true\n  }\n});\n\nawait db.initialize();\n\n// Use standard PostgreSQL syntax\nawait db.query(`\n  CREATE TABLE users (\n    id SERIAL PRIMARY KEY,\n    email TEXT UNIQUE NOT NULL,\n    name TEXT NOT NULL,\n    created_at TIMESTAMP DEFAULT NOW()\n  )\n`);\n\n// Insert data with parameters\nconst result = await db.query(\n  'INSERT INTO users (email, name) VALUES ($1, $2) RETURNING *',\n  ['user@example.com', 'John Doe']\n);\n\n// Query with JOINs and complex operations\nconst users = await db.query(`\n  SELECT u.*, COUNT(o.id) as order_count \n  FROM users u \n  LEFT JOIN orders o ON u.id = o.user_id \n  WHERE u.created_at > $1\n  GROUP BY u.id\n`, [new Date('2024-01-01')]);\n```\n\n### Server Mode (PostgreSQL Compatible)\n\n```javascript\nimport { RAIDBServer } from '@rai/raidb/server';\n\n// Start RAIDB as a PostgreSQL-compatible server\nconst server = new RAIDBServer({\n  server: {\n    host: '0.0.0.0',\n    port: 5433,\n    maxConnections: 100,\n    workerThreads: 4\n  },\n  dataPath: './server-data',\n  encryptionKey: 'your-encryption-key',\n  authentication: {\n    method: 'password',\n    users: [\n      { username: 'admin', password: 'secure-password', databases: ['myapp'] }\n    ]\n  },\n  cluster: {\n    enabled: true,\n    nodes: [\n      { id: 'node1', host: 'localhost', port: 5433, role: 'primary' },\n      { id: 'node2', host: 'localhost', port: 5434, role: 'replica' }\n    ]\n  }\n});\n\nawait server.start();\nconsole.log('RAIDB Server running on port 5433');\n\n// Now connect with any PostgreSQL client\n// psql -h localhost -p 5433 -U admin -d myapp\n```\n\n### Connect with Standard PostgreSQL Clients\n\n```javascript\n// Using node-postgres (pg)\nimport { Client } from 'pg';\n\nconst client = new Client({\n  host: 'localhost',\n  port: 5433,\n  user: 'admin',\n  password: 'secure-password',\n  database: 'myapp'\n});\n\nawait client.connect();\nconst result = await client.query('SELECT * FROM users');\nawait client.end();\n```\n\n```python\n# Using psycopg2 (Python)\nimport psycopg2\n\nconn = psycopg2.connect(\n    host=\"localhost\",\n    port=5433,\n    user=\"admin\",\n    password=\"secure-password\",\n    database=\"myapp\"\n)\n\ncur = conn.cursor()\ncur.execute(\"SELECT * FROM users\")\nrows = cur.fetchall()\nconn.close()\n```\n\n## 🗄️ Schema Management & Migrations\n\n### Creating Migrations\n\n```javascript\nimport { MigrationManager } from '@rai/raidb/migrations';\n\nconst migrationManager = new MigrationManager({\n  database: db, // Your RAIDB instance\n  migrationsPath: './migrations'\n});\n\n// Create a new migration file\nawait migrationManager.createMigration('add-user-preferences', {\n  up: `\n    CREATE TABLE user_preferences (\n      id SERIAL PRIMARY KEY,\n      user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,\n      key TEXT NOT NULL,\n      value JSONB,\n      created_at TIMESTAMP DEFAULT NOW(),\n      UNIQUE(user_id, key)\n    );\n    \n    CREATE INDEX idx_user_preferences_user_id ON user_preferences(user_id);\n    CREATE INDEX idx_user_preferences_key ON user_preferences USING gin(key);\n  `,\n  down: `\n    DROP TABLE user_preferences;\n  `\n});\n```\n\n### Running Migrations\n\n```javascript\n// Apply all pending migrations\nawait migrationManager.migrate();\n\n// Rollback last migration\nawait migrationManager.rollback();\n\n// Get migration status\nconst status = await migrationManager.getStatus();\nconsole.log(`Applied: ${status.applied.length}, Pending: ${status.pending.length}`);\n```\n\n### Advanced Schema Operations\n\n```javascript\n// ALTER TABLE with foreign key referential actions\nawait db.query(`\n  ALTER TABLE orders \n  ADD CONSTRAINT fk_orders_user_id \n  FOREIGN KEY (user_id) REFERENCES users(id) \n  ON DELETE CASCADE \n  ON UPDATE RESTRICT\n`);\n\n// Add computed columns and constraints\nawait db.query(`\n  ALTER TABLE products \n  ADD COLUMN price_with_tax DECIMAL GENERATED ALWAYS AS (price * 1.08) STORED,\n  ADD CONSTRAINT check_positive_price CHECK (price > 0)\n`);\n\n// Create materialized views for performance\nawait db.query(`\n  CREATE MATERIALIZED VIEW user_order_summary AS\n  SELECT \n    u.id, \n    u.name,\n    COUNT(o.id) as total_orders,\n    SUM(o.total) as total_spent\n  FROM users u\n  LEFT JOIN orders o ON u.id = o.user_id\n  GROUP BY u.id, u.name\n`);\n```\n\n## 🔄 Synchronization & Replication\n\n### Real-time Sync Between Instances\n\n```javascript\nimport { SyncManager } from '@rai/raidb/sync';\n\n// Configure synchronization\nconst syncManager = new SyncManager({\n  instanceId: 'mobile-app-1',\n  instanceName: 'Mobile App Instance',\n  instanceType: 'mobile',\n  endpoint: {\n    type: 'websocket',\n    host: 'sync.myapp.com',\n    port: 8080,\n    secure: true\n  },\n  behavior: {\n    mode: 'bidirectional',\n    autoSyncInterval: 30000, // 30 seconds\n    realTimeSync: true,\n    conflictResolution: 'last-write-wins'\n  },\n  security: {\n    authMethod: 'token',\n    token: 'your-sync-token'\n  }\n}, db);\n\nawait syncManager.initialize();\n\n// Connect to server instance\nawait syncManager.connectToPeer({\n  host: 'server.myapp.com',\n  port: 8080,\n  secure: true\n});\n\n// Sync specific tables\nawait syncManager.syncWithAllPeers(['users', 'orders', 'products']);\n```\n\n### PostgreSQL Integration\n\n```javascript\nimport { PostgreSQLSync } from '@rai/raidb/postgres-sync';\n\n// Sync with existing PostgreSQL database\nconst pgSync = new PostgreSQLSync({\n  raidb: db,\n  postgres: {\n    host: 'localhost',\n    port: 5432,\n    user: 'postgres',\n    password: 'password',\n    database: 'production_db'\n  },\n  syncMode: 'bidirectional',\n  tables: ['users', 'orders', 'products']\n});\n\nawait pgSync.initialize();\nawait pgSync.startSync();\n```\n\n## ⚡ Performance & Configuration\n\n### Optimization Settings\n\n```javascript\nconst db = new RAIDB({\n  dataPath: './data',\n  encryptionKey: 'key',\n  performance: {\n    // Memory configuration\n    cacheSize: '512MB',\n    sharedBuffers: '256MB',\n    \n    // WAL configuration\n    walMode: true,\n    walSyncMode: 'normal', // or 'full' for maximum durability\n    \n    // Query optimization\n    enableQueryCache: true,\n    planCacheSize: 1000,\n    \n    // Indexing\n    autoVacuum: true,\n    autoAnalyze: true\n  },\n  \n  // Connection limits\n  maxConnections: 50,\n  \n  // Security\n  encryptionLevel: 'maximum',\n  keyDerivationRounds: 100000\n});\n```\n\n### Monitoring & Metrics\n\n```javascript\n// Built-in performance monitoring\nconst metrics = await db.getMetrics();\nconsole.log({\n  queriesPerSecond: metrics.qps,\n  cacheHitRate: metrics.cacheHitRate,\n  activeConnections: metrics.activeConnections,\n  indexUsage: metrics.indexUsage\n});\n\n// Query performance analysis\nconst slowQueries = await db.getSlowQueryLog();\nconsole.log('Slow queries:', slowQueries);\n\n// Real-time query monitoring\ndb.on('query', (query, duration) => {\n  if (duration > 1000) {\n    console.log(`Slow query detected: ${query} (${duration}ms)`);\n  }\n});\n```\n\n## 🧪 Testing & Development\n\n### Running Tests\n\n```bash\n# Run all production readiness tests\nnpm test\n\n# Run specific test categories\nnpm run test:core          # Core database engine\nnpm run test:server        # Server functionality\nnpm run test:integration   # Real-world scenarios\nnpm run test:performance   # Load testing\n\n# Run individual test files\nnode tests/integration/real-world-server-test.js\nnode tests/performance/comprehensive-performance-benchmark.js\n```\n\n### Development Mode\n\n```javascript\n// Enable debug logging\nconst db = new RAIDB({\n  dataPath: './dev-data',\n  encryptionKey: 'dev-key',\n  debug: {\n    logLevel: 'debug',\n    logQueries: true,\n    logPerformance: true\n  }\n});\n```\n\n## 📚 API Reference\n\n### Core Database Operations\n\n```javascript\n// Query execution\nconst result = await db.query(sql, parameters);\nconst { rows, rowCount, command } = result;\n\n// Transaction management\nconst transaction = await db.beginTransaction();\ntry {\n  await transaction.query('INSERT INTO users ...');\n  await transaction.query('INSERT INTO orders ...');\n  await transaction.commit();\n} catch (error) {\n  await transaction.rollback();\n  throw error;\n}\n\n// Prepared statements\nconst stmt = await db.prepare('SELECT * FROM users WHERE id = $1');\nconst user = await stmt.execute([userId]);\nawait stmt.deallocate();\n\n// Bulk operations\nawait db.bulkInsert('products', [\n  { name: 'Product 1', price: 10.00 },\n  { name: 'Product 2', price: 20.00 }\n]);\n```\n\n### Schema Management\n\n```javascript\n// Database introspection\nconst tables = await db.getTables();\nconst columns = await db.getTableSchema('users');\nconst indexes = await db.getIndexes('users');\nconst constraints = await db.getConstraints('users');\n\n// Dynamic schema operations\nawait db.createTable('dynamic_table', {\n  id: 'SERIAL PRIMARY KEY',\n  name: 'TEXT NOT NULL',\n  data: 'JSONB'\n});\n\nawait db.addColumn('users', 'phone', 'TEXT');\nawait db.addIndex('users', ['email'], { unique: true });\n```\n\n## 🔧 Configuration Options\n\n### Complete Configuration Reference\n\n```javascript\nconst config = {\n  // Data storage\n  dataPath: './data',                    // Data directory path\n  encryptionKey: 'key',                  // Encryption key (required)\n  \n  // Performance tuning\n  performance: {\n    cacheSize: '256MB',                  // Memory cache size\n    sharedBuffers: '128MB',              // Shared buffer pool\n    walMode: true,                       // Write-ahead logging\n    walSyncMode: 'normal',               // WAL sync mode\n    enableQueryCache: true,              // Query result caching\n    planCacheSize: 1000,                 // Query plan cache size\n    autoVacuum: true,                    // Automatic space reclamation\n    autoAnalyze: true,                   // Automatic statistics updates\n    maxWorkerProcesses: 4                // Background worker processes\n  },\n  \n  // Connection settings\n  maxConnections: 100,                   // Maximum concurrent connections\n  connectionTimeout: 30000,              // Connection timeout (ms)\n  statementTimeout: 300000,              // Statement timeout (ms)\n  \n  // Security\n  encryptionLevel: 'standard',           // 'standard' or 'maximum'\n  keyDerivationRounds: 50000,            // PBKDF2 rounds\n  \n  // Synchronization\n  sync: {\n    enabled: true,                       // Enable sync capabilities\n    instanceId: 'unique-id',             // Instance identifier\n    instanceType: 'desktop',             // Instance type\n    conflictResolution: 'last-write-wins' // Conflict resolution strategy\n  },\n  \n  // Debugging\n  debug: {\n    logLevel: 'info',                    // Log level\n    logQueries: false,                   // Log all queries\n    logPerformance: false,               // Log performance metrics\n    enableProfiler: false                // Enable query profiler\n  }\n};\n```\n\n## 🏗️ Architecture\n\n```\nRAIDB Architecture\n├── Core Engine\n│   ├── SQL Parser & AST               ✅ Complete PostgreSQL syntax\n│   ├── Query Planner & Optimizer     ✅ Cost-based optimization\n│   ├── Transaction Manager (MVCC)    ✅ ACID compliance\n│   ├── Storage Engine                ✅ Encrypted file storage\n│   └── Index Manager                 ✅ B-tree, hash, partial indexes\n│\n├── Server Components\n│   ├── PostgreSQL Wire Protocol      ✅ Full pg client compatibility\n│   ├── Connection Manager            ✅ Pooling and session management\n│   ├── Authentication Manager        ✅ Multi-method authentication\n│   └── Cluster Manager               ✅ Multi-node clustering\n│\n├── Advanced Features\n│   ├── Schema Migration System       ✅ Version-controlled migrations\n│   ├── Function & Trigger System     ✅ User-defined functions\n│   ├── View & Materialized Views     ✅ Complex query optimization\n│   └── Synchronization Engine        ✅ Real-time instance sync\n│\n└── Monitoring & Management\n    ├── Performance Metrics           ✅ Real-time monitoring\n    ├── Query Performance Analyzer    ✅ Slow query detection\n    ├── Health Check System           ✅ System health monitoring\n    └── Administrative Tools          ✅ Database management\n```\n\n## 📈 Performance Benchmarks\n\n### Embedded Mode Performance\n- **Simple SELECT**: ~2,000 ops/sec\n- **JOIN Queries**: ~800 ops/sec  \n- **INSERT Operations**: ~1,500 ops/sec\n- **Complex Aggregations**: ~400 ops/sec\n- **Transaction Processing**: ~1,000 txn/sec\n\n### Server Mode Performance\n- **Concurrent Connections**: 100+ simultaneous clients\n- **Query Throughput**: ~300 QPS per core\n- **Replication Lag**: <10ms typical\n- **Memory Usage**: ~50MB base + cache size\n\n## 📦 Local/Desktop Deployment\n\n### Building for Local Use\n\n```bash\n# Build standalone local package\nnpm run build:local\n\n# Creates ./build/ directory with:\n# - Compiled JavaScript (dist/)\n# - Production dependencies (node_modules/)\n# - Startup scripts (start.sh, start.bat)\n# - Local configuration\n```\n\n### Desktop App Distribution\n\n```bash\n# Package for all platforms\nnpm run package:desktop\n\n# Creates platform-specific packages:\n# - raidb-linux-v1.0.0.tar.gz\n# - raidb-macos-v1.0.0.tar.gz  \n# - raidb-windows-v1.0.0.zip\n```\n\n### Real-World Desktop App Integration\n\nFor embedding RAIDB in desktop applications:\n\n```javascript\n// In your Electron/Tauri/desktop app\nimport { RAIDB } from './raidb-local/dist/index.js';\n\nconst db = new RAIDB({\n  dataPath: path.join(app.getPath('userData'), 'database'),\n  encryptionKey: 'your-app-specific-key',\n  performance: {\n    cacheSize: '256MB',\n    walMode: true\n  }\n});\n\nawait db.initialize();\n// Database ready for use\n```\n\n### Distribution Options\n\n1. **Bundled Approach** - Include RAIDB files in your app installer\n2. **Download Approach** - Download RAIDB package during first run\n3. **Embedded Approach** - Compile RAIDB into your app binary\n\n## 🚀 Deployment Scripts\n\n### Server Deployment (Docker)\n```bash\nnpm run deploy         # Full deployment with verification\nnpm run deploy:quick   # Quick deployment\n```\n\n### Local Deployment\n```bash\nnpm run build:local    # Build for local use\nnpm run package:desktop # Create distribution packages\n```\n\n## 🤝 Contributing\n\nWe welcome contributions! Please see our [Contributing Guide](CONTRIBUTING.md) for details.\n\n### Development Setup\n\n```bash\ngit clone https://github.com/your-org/raidb.git\ncd raidb\nnpm install\nnpm run build\nnpm test\n```\n\n## 📄 License\n\nMIT License - see [LICENSE](LICENSE) file for details.\n\n## 🆘 Support\n\n- **Documentation**: [docs.raidb.com](https://docs.raidb.com)\n- **Issues**: [GitHub Issues](https://github.com/your-org/raidb/issues)\n- **Discord**: [Community Chat](https://discord.gg/raidb)\n- **Email**: support@raidb.com\n\n---\n\n**RAIDB** - Production-ready PostgreSQL-compatible database engine for modern applications.","readmeFilename":"README.md"}