Added #

• Initial project setup and documentation

Added #

• Initial release of DartDB
• High-performance embedded key-value database for pure Dart backend applications
• Built on LMDB (Lightning Memory-Mapped Database) with Rust FFI integration
• Core database operations:
  • set(key, value) - Store data with any JSON-serializable type
  • get<T>(key) - Retrieve data with optional type casting
  • get<T>(key, defaultValue) - Retrieve data with default fallback
  • exists(key) - Check if key exists
  • delete(key) - Remove data
  • keys() - Get all keys
  • keys(pattern) - Get keys matching pattern
• Batch operations:
  • setMultiple(Map<String, dynamic>) - Set multiple values at once
  • getMultiple(List<String>) - Get multiple values at once
  • deleteMultiple(List<String>) - Delete multiple keys at once
• Advanced operations:
  • increment(key, by) - Increment numeric values
  • decrement(key, by) - Decrement numeric values
  • setWithTTL(key, value, duration) - Set with expiration time
  • stats() - Get database statistics
• Transaction support:
  • transaction((txn) async { ... }) - Execute write operations in transaction
  • readTransaction((txn) async { ... }) - Execute read-only transaction
• Configurable database options:
  • Maximum database size configuration
  • Read-only mode support
  • Custom sync modes (full, lazy, none)
  • Compression settings with LZ4 algorithm
  • Maximum readers configuration
• Cross-platform support for Linux, macOS, and Windows
• ACID compliance with full transaction support
• Memory-efficient operation with memory-mapped files
• Redis-like API for familiar key-value operations
• Comprehensive error handling and type safety
• Built-in logging with configurable log levels
• Environment variable configuration support
• In-memory database option (:memory:) for testing
• Full JSON serialization support for complex Dart objects
• Performance optimizations:
  • Up to 1M+ read operations per second
  • Up to 100K+ write operations per second
  • Microsecond-level latency for basic operations
  • Efficient batch operations for bulk data handling
  • Low memory footprint with memory-mapped storage
• Complete test suite with comprehensive coverage
• Extensive documentation with practical examples:
  • Web API caching implementation
  • Session storage system
  • Configuration management
  • Troubleshooting guide
  • Performance benchmarks
• MIT License for open source usage
• Ready for pub.flutter-io.cn publication

Technical Details #

• Built with Dart SDK 3.0.0+ compatibility
• FFI integration with Rust for native performance
• LMDB engine for proven reliability and speed
• Memory-mapped file I/O for optimal performance
• Multi-reader, single-writer concurrency model
• Crash-safe operation with automatic recovery
• Flexible data serialization supporting all JSON-compatible types

Use Cases #

• Caching layer for backend applications
• Session storage with persistence
• Configuration and metadata storage
• Job queue and task scheduling
• Metrics collection and analytics
• Embedded analytics and data processing
• High-performance key-value operations in pure Dart environments