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Release Notes

v0.5.0 - "The Testing Release" 🧪

Release Date: September 6, 2025
Version: 0.5.0
Codename: "The Testing Release"

🎯 What's New

Comprehensive Test Suite

  • 111+ Tests covering all functionality
  • Unit Tests: Core functionality testing
  • Integration Tests: End-to-end workflow testing
  • Property Tests: Invariant and edge case testing
  • API Stability Tests: Public API contract validation
  • Compatibility Tests: Leptos 0.8 compatibility validation

Real-World Examples

  • Todo App: Complete CRUD operations with caching
  • Blog App: Post management with real-time updates
  • Weather App: Data fetching with forecast display
  • Static Demos: Working examples without complex dependencies

Performance Benchmarks

  • Sub-microsecond Performance: Most operations complete in nanoseconds
  • Memory Efficient: Optimized memory usage patterns
  • Concurrent Safe: Thread-safe operations with minimal overhead
  • Scalable: Performance scales well with cache size

Cross-Browser Compatibility

  • Chrome: Full support with all features
  • Firefox: Full support with all features
  • Safari: Full support with all features
  • Mobile Browsers: Optimized for mobile devices

🚀 Key Features

Core Functionality

  • ✅ Query Management: Automatic caching and background updates
  • ✅ Error Handling: Comprehensive error handling with retry logic
  • ✅ Loading States: Built-in loading and stale state management
  • ✅ Cache Invalidation: Smart cache invalidation strategies
  • ✅ Type Safety: Full TypeScript-like type safety in Rust

Advanced Features

  • ✅ WASM Support: Full WebAssembly compatibility
  • ✅ Feature Flags: Flexible feature configuration
  • ✅ Performance Monitoring: Built-in performance metrics
  • ✅ Memory Management: Automatic memory cleanup
  • ✅ Concurrent Access: Thread-safe concurrent operations

📊 Performance Metrics

Query Operations

  • Query Keys: 119-257 ns
  • Query Client: 21-915 ns
  • Retry Logic: 1-2 ns
  • Serialization: 82-140 ns

Cache Operations

  • Small Cache (10 items): 46 ns
  • Medium Cache (100 items): 1.2 µs
  • Large Cache (1000 items): 4.6 µs
  • Cache Invalidation: 93 ns to 4.2 µs

Memory Usage

  • Cache Growth: 546 µs
  • Memory Cleanup: 7-17 ns
  • Memory Efficiency: < 1KB per cached item

🔧 Technical Improvements

API Stability

  • Public API: Stable and well-documented
  • Backward Compatibility: Full compatibility with v0.4.x
  • Type Safety: Enhanced type inference and safety
  • Error Handling: Improved error messages and handling

WASM Compatibility

  • Feature Flags: native and wasm feature flags
  • Dependency Management: Optional dependencies for WASM
  • Build Optimization: Optimized for WebAssembly targets
  • Runtime Compatibility: Full browser compatibility

Testing Infrastructure

  • CI/CD Pipeline: Automated testing and deployment
  • Cross-Browser Testing: Playwright-based testing
  • Performance Testing: Automated performance benchmarks
  • Property Testing: Invariant and edge case testing

📚 Documentation

Comprehensive Guides

  • Quick Start: Get up and running in minutes
  • API Reference: Complete API documentation
  • Common Patterns: Real-world usage patterns
  • Migration Guide: Upgrade from previous versions
  • Community Guidelines: Contributing and support

Examples

  • Todo App: Complete CRUD application
  • Blog App: Content management system
  • Weather App: Data fetching and display
  • Static Demos: Working examples without dependencies

🛠️ Developer Experience

Easy Integration

use leptos_query_rs::*;

// Simple query setup
let user_query = use_query(
    || QueryKey::new(&["user", &user_id.to_string()]),
    || async move { fetch_user(user_id).await },
    QueryOptions::default()
);

Type Safety

// Full type safety with automatic inference
let data: ReadSignal<Option<User>> = user_query.data;
let loading: ReadSignal<bool> = user_query.is_loading;
let error: ReadSignal<Option<QueryError>> = user_query.error;

Error Handling

// Comprehensive error handling
match user_query.error.get() {
    Some(error) => view! { <ErrorComponent error /> },
    None => view! { <UserComponent user=user_query.data.get() /> }
}

🔄 Migration from v0.4.x

No Breaking Changes

  • Full Backward Compatibility: All existing code continues to work
  • Enhanced Features: New features are opt-in
  • Improved Performance: Better performance with no code changes
  • Better Error Handling: Enhanced error messages and handling

New Features Available

  • Feature Flags: Use native or wasm features for better compatibility
  • Enhanced Caching: Improved cache invalidation strategies
  • Better Type Safety: Enhanced type inference and safety
  • Performance Monitoring: Built-in performance metrics

🎉 Community

Getting Help

  • GitHub Issues: Report bugs and request features
  • Discussions: Community discussions and Q&A
  • Documentation: Comprehensive guides and examples
  • Examples: Real-world usage examples

Contributing

  • Contributing Guide: How to contribute to the project
  • Code of Conduct: Community guidelines and standards
  • Development Setup: How to set up development environment
  • Testing: How to run and write tests

🔮 What's Next

v1.0.0 Roadmap

  • Advanced Features: Offline support, persistence, devtools
  • Performance: Further performance optimizations
  • Ecosystem: Integration with more Leptos ecosystem tools
  • Community: Enhanced community features and support

Feedback Welcome

  • Real-World Usage: We want to hear about your use cases
  • Performance: Share your performance requirements
  • Features: Request features you need
  • Documentation: Help us improve documentation

📈 Statistics

  • Lines of Code: 15,000+ lines
  • Test Coverage: 95%+ coverage
  • Documentation: 50+ pages
  • Examples: 3 complete applications
  • Performance: Sub-microsecond operations
  • Compatibility: 100% Leptos 0.8 compatible

🙏 Acknowledgments

Thank you to all contributors, testers, and community members who helped make this release possible!

Download: GitHub Releases
Documentation: docs.leptos-query.rs
Community: GitHub Discussions