rustfs/crates/io-core/CHANGELOG.md

Changelog

All notable changes to the rustfs-io-core and rustfs-io-metrics crates will be documented in this file.

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

[0.0.5] - 2025-01-XX

Added

rustfs-io-core

• IoScheduler: Adaptive I/O scheduler with buffer size calculation
• IoPriorityQueue: Priority queue with starvation prevention
• BackpressureMonitor: System overload protection with dual watermark
• DeadlockDetector: Wait-for graph based deadlock detection
• LockOptimizer: Adaptive spin lock optimization
• RequestTimeoutWrapper: Dynamic timeout calculation
• Buffer size functions: calculate_optimal_buffer_size, get_buffer_size_for_media, etc.
• Configuration types: IoSchedulerConfig, BackpressureConfig, DeadlockDetectorConfig, etc.

rustfs-io-metrics

• CacheConfig: L1/L2 tiered cache configuration
• AdaptiveTTL: Dynamic TTL adjustment based on access frequency
• AccessTracker: Cache item access pattern tracking
• Metrics recording functions: I/O, cache, backpressure, deadlock, lock, timeout metrics
• Unified configuration: IoConfig, CacheSettings, IoSchedulerSettings, etc.
• Bandwidth monitoring: Real-time bandwidth observation

Changed

• Migrated core I/O scheduling algorithms from rustfs::storage::concurrency to rustfs-io-core
• Migrated metrics and configuration to rustfs-io-metrics
• Updated rustfs::storage::concurrency::mod.rs to re-export new module types
• Added API compatibility tests

Fixed

• Improved buffer size calculation for different storage media
• Enhanced deadlock detection with cycle detection algorithm
• Better backpressure state transitions

Documentation

• Added comprehensive README.md for both crates
• Added design documentation for I/O scheduler, backpressure, deadlock detection
• Added metrics guide and configuration reference
• Added runnable example code

Migration Notes

• All original APIs in rustfs::storage::concurrency are preserved
• New types are re-exported for gradual migration
• No breaking changes to existing code

[0.0.4] - Previous Version

Note

This changelog starts with version 0.0.5 which includes the concurrency module migration. For previous versions, see the git history.