release v0.7.0

v0.7.0 (July 18, 2025)

Added

• Full Async Logging Support 🚀

  • AsyncLogger with non-blocking operations
  • AsyncLogQueue with configurable backpressure and automatic message dropping
  • AsyncConsoleHandler and AsyncFileHandler with buffering and rotation
  • Background processing thread with graceful shutdown
  • Zero-copy message queuing with proper memory management
  • Thread-safe multi-handler support
  • Comprehensive async demo and quick start guide
  • Perfect integration with async runtimes - no event loop blocking

• Context tracking support

  • LogContext struct for request and correlation IDs
  • ContextManager for thread-safe context storage
  • New template placeholders: {request_id}, {correlation_id}, {trace_id}, {operation}
  • Helper functions: setRequestContext(), correlate(), clearContext()
  • hereWithContext(@src()) for context-aware logging
  • Example in context_tracking.zig

Fixed

• Critical Memory Leaks in Core Logger 🔧
  • Fixed memory leaks in ConsoleHandler, Formatter, and Logger cleanup
  • Proper deinit() implementation for all allocations
  • Fixed ArrayList and placeholder cache memory management
  • Resolves GPA memory leak errors in test environments

Performance

• Major performance boost: Stack buffer optimization eliminates heap allocations for common log sizes, achieving 63% improvement in JSON formatting (27K→44K logs/s)
  • small performance impact on other formats

Deprecated

• Deprecated NetworkHandler and NetworkOutput APIs (On Hold for now)
  • Note: Network output is highly experimental and not tested in production environments
  • Use FileHandler or custom handlers for reliable logging
  • Future: Will be thoroughly tested, evolved, and stabilized in upcoming versions