reaxdb_dart 1.3.0

The fastest NoSQL database for pure Dart. 21,000+ writes/sec, instant cache reads, built-in encryption. Zero native dependencies.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.3.0 - 2025-08-11

Changed

• Pure Dart Package: Converted from Flutter-specific to pure Dart package - no longer requires Flutter SDK
• Package can now be used in any Dart environment (CLI, server, web, Flutter)
• Note: This is NOT a breaking change - all existing Flutter code continues to work

Added

• Configurable Logging System: Multi-level logging with console, file, and memory outputs
• Reactive Streams: Advanced stream operators including:
  • debounce() - Delay events until a pause in emissions
  • throttle() - Limit event frequency
  • buffer() - Collect multiple events before emitting
  • take() and skip() - Control number of events
  • map() - Transform event data
• Enhanced Query Builder:
  • Aggregation functions: COUNT, SUM, AVG, MIN, MAX, DISTINCT
  • GROUP BY operations with multiple aggregations
  • Full-text search capabilities
  • Batch update operations
  • Batch delete operations
  • Improved scanning for large datasets (up to 1000 IDs)
• Advanced Transaction Features:
  • Transaction isolation levels (ReadUncommitted, ReadCommitted, RepeatableRead, Serializable)
  • Read-only transactions with write protection
  • Savepoints for partial rollback
  • Nested transactions
  • Automatic retry logic with exponential backoff
  • Transaction timeout support
  • Transaction statistics and monitoring
• Enhanced Transaction Manager:
  • withTransaction() - Automatic transaction management with retry
  • beginEnhancedTransaction() - Create transactions with advanced features
  • beginReadOnlyTransaction() - Create read-only transactions
  • Active transaction tracking
  • Bulk transaction closure

Improved

• Query Performance: Extended collection scanning from 20 to 1000 IDs
• Test Coverage: Added comprehensive tests for all new features
• API Documentation: Enhanced documentation with examples for new features
• Error Handling: Better error messages and transaction failure handling

Fixed

• Transaction retry logic now properly implements exponential backoff
• Query aggregation test expectations corrected
• Enhanced transaction tests now pass 100%

Acknowledgments

• Special thanks to @TechWithDunamis for the pure Dart conversion (PR #4)

1.2.3 - 2025-07-20

Fixed

• CRITICAL: Fixed data persistence between application sessions
• WAL recovery now properly restores data on database reopening
• Fixed async operations in WAL write operations
• Fixed operation ordering to maintain data consistency
• Improved tombstone handling for deleted entries

Acknowledgments

• Thanks to Ray Caruso for reporting the critical persistence bug

1.2.2 - 2025-07-15

Fixed

• Fixed pub.dev static analysis issues
• Better error handling in code
• Improved code quality

Added

• API documentation for all public methods

1.2.1 - 2025-07-15

Fixed

• Minor fixes and code improvements

1.2.0 - 2025-07-11

Added

• WASM Compatibility: Full support for Dart's WASM runtime with automatic fallback encryption
• Enhanced Encryption API: New EncryptionType enum for better encryption control
• Encryption Factory Methods: DatabaseConfig.withXorEncryption() and DatabaseConfig.withAes256Encryption()
• WASM Fallback Encryption: HMAC-based encryption for WASM environments when PointyCastle is unavailable
• Runtime Detection: Automatic detection of WASM runtime with appropriate warnings
• Encryption Metadata: Enhanced metadata including runtime environment and fallback status

Improved

• AES-256 Performance: 40% faster AES encryption (138-180ms vs 237ms) using PointyCastle 4.0.0
• WAL Recovery: Fixed Write-Ahead Log recovery issues with proper pending write flushing
• Code Documentation: Updated README with new encryption API examples and WASM compatibility section

Fixed

• WAL Test Failures: Resolved race conditions in Write-Ahead Log tests
• Tombstone Recovery: Fixed delete entry recovery in WAL mixed operations
• Async Flush Issues: Improved pending write flushing in WAL close operations

Technical

• Conditional Imports: Smart import system for WASM compatibility
• Fallback Implementation: WASM-compatible encryption using only Dart's built-in crypto library
• API Compatibility: Maintains backward compatibility while adding new features

1.1.1 - 2025-06-15

Added

• Secondary Indexes: Query any field with lightning speed
• Query Builder: Powerful API for complex queries
• Range Queries: Find documents between values
• Auto Index Updates: Indexes stay in sync automatically

Improved

• Query Performance: Significant improvements in indexed queries
• Index Management: Better index creation and maintenance

1.0.1 - 2025-05-20

Added

• 4.4x faster writes: Now 21,000+ operations per second
• 40% faster batch operations: Improved batch processing

Improved

• Write Performance: Major optimizations in write operations
• Batch Processing: Enhanced batch operation efficiency

1.0.0 - 2025-05-01

Added

• Initial release of ReaxDB
• High Performance: Zero-copy serialization and multi-level caching system
• Security: Built-in encryption with customizable keys
• ACID Transactions: Full transaction support with isolation levels
• Concurrent Operations: Connection pooling and batch processing
• Mobile Optimized: Hybrid storage engine designed for mobile devices
• Real-time Streams: Live data change notifications with pattern matching