chore: release v4.1.0

[sw-release-bot]

🤖 New release

• coordinode-lsm-tree: 4.0.0 -> 4.1.0

Changelog

4.1.0 - 2026-03-24

Added

• (fs) io_uring Fs implementation for high-throughput I/O (#106)
• (compression) zstd dictionary compression support (#131)

Documentation

• add benchmark dashboard link and update badges (#151)
• add v4.0.0 fork epoch changelog (all changes since upstream v3.1.1)

Fixed

• (version) fsync version file before rewriting CURRENT pointer (#152)
• thread UserComparator through ingestion guards and range overlap (#139)

Performance

• (bench) add multi-threaded support to all db_bench workloads (#155)
• (merge) replace IntervalHeap with sorted-vec heap + replace_min/replace_max (#148)
• (compaction) merge input ranges before L2 overlap query (#146)

Refactored

• (version) comparator API cleanup — TransformContext + rename Run::push() (#153)
• add #[non_exhaustive] to CompressionType enum

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[sw-release-bot]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'lsm-tree db_bench'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.15.

Benchmark suite	Current: 027de03	Previous: e45fcc9	Ratio
overwrite	1022149.9641698106 ops/sec	1217297.5375062914 ops/sec	1.19
readwhilewriting	461430.6596231338 ops/sec	548624.2188866674 ops/sec	1.19

This comment was automatically generated by workflow using github-action-benchmark.

CC: @polaz

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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