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rustfs/crates/io-core/CHANGELOG.md
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Zhengchao An e2fb0427f9 docs(io-metrics): remove stale unified-config docs left by #6008 (#6039) 
PR #6008 deleted crates/io-metrics/src/config.rs but the crate docs still taught the deleted API: both READMEs kept the Unified Configuration sections, module-tree entries and ./src/config.rs links, the example kept an orphaned numbered comment, and the io-core/io-metrics changelog had no removal record. Scrub all of it; keep cache_config.rs references, which are still real.
2026-08-12 20:41:40 +00:00

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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.

[Unreleased]

Removed

rustfs-io-metrics

  • Unified configuration (added in 0.0.5): the zero-consumer IoConfig, CacheSettings, IoSchedulerSettings, BackpressureSettings, TimeoutSettings, DeadlockDetectionSettings types and their DEFAULT_* constants were removed (rustfs/rustfs#6008); rustfs-io-core's IoSchedulerConfig/BackpressureConfig remain the canonical configuration types.

[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.

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