Highlights

• Added practical LSM range-filter pruning for point reads and bounded scans, including exact-candidate point fast paths, table-internal block-range pruning, and read-path cleanup.
• Tightened value separation and value-log defaults: CF/keyspace-aware routing landed, ordinary multi-bucket vlog routing remains enabled, ValueThreshold moved to 2048, and HotRing is now narrowed to an optional write-hot detector/throttling tool instead of a default data-path strategy.
• Continued correctness and boundary cleanup across startup recovery, WAL/LSM integration, iterator semantics, range tombstones, region metadata APIs, and stale internal wrappers.

What's Changed

• feat: add range filter pruning for LSM reads by @feichai0017 in #127
• feat: add value-separation policy by CF/keyspace by @ByteByteUp in #126
• perf(wal): decouple WAL fsync from commit pipeline via sync worker by @zzzzwc in #123
• feat/external-sst-import by @ByteByteUp in #122
• fix: stop iteration on value-log read errors instead of silently skipping by @sreekar2307 in #124
• fix: replace log.Fatal with error return in compact.State.Delete() by @sreekar2307 in #120
• fix: prevent short-circuit in decrRefs to ensure complete cleanup by @sreekar2307 in #119
• fix: enforce user iterator semantics by @nothiny in #118
• fix: replace mapfile with POSIX-compatible read loop for macOS by @Anekoique in #117
• fix: reorder munmap/truncate in Truncature to prevent mapping corruption by @LinnkidChen in #111
• fix: prevent RWMutex reentrant deadlock in lsm compaction by @zzzzwc in #110
• perf: optimize sequential inserts in skiplist with O(1) append by @zzzzwc in #108
• proto: add read consistency fields to kv context and raft header by @wchwawa in #107
• feat: add atomic batch write path for WAL-backed writes by @feichai0017 in #103
• Add DeleteRange Support with Range Tombstones by @nothiny in #99
• deps(deps): bump github.com/panjf2000/ants/v2 from 2.11.6 to 2.12.0 by @dependabot[bot] in #128
• deps(deps): bump github.com/panjf2000/ants/v2 from 2.11.5 to 2.11.6 by @dependabot[bot] in #125

Additional Changes

• fix: enforce strict startup recovery and return open errors in 2d8820e
• refactor: simplify lsm compaction and diagnostics in 4a3e571
• refactor: tighten kv entry ownership and key semantics in cc77b33
• refactor: narrow hotring usage and raise vlog threshold in b6e3450
• refactor: remove stale wrappers and hot tracker shim in e4e8574
• docs: align benchmark and engine documentation in 6cae04c

New Contributors

• @sreekar2307 made their first contribution in #119
• @Anekoique made their first contribution in #117
• @LinnkidChen made their first contribution in #111
• @wchwawa made their first contribution in #107

Full Changelog: v0.7.0...v0.7.1

Highlights

• Added PD-based control plane integration for distributed mode (routing, metadata persistence, allocator bootstrap).
• Removed standalone/local transaction APIs from the embedded path; transaction semantics are now aligned with distributed Percolator flow.
• Continued iterator and LSM correctness improvements.

What's Changed

• fix [Bug/Feature] Iterator Does Not Support Reverse Iteration by @nothiny in #75
• fix: preserve L0 fid ordering in replaceTables by @ByteByteUp in #95
• feat(pd): integrate PD-lite control plane with persistence and config-driven bootstrap by @feichai0017 in #100
• feat: add iterator bounds to IteratorOptions by @CyberSleeper in #101
• refactor: remove standalone txn APIs and align docs by @feichai0017 in #102

Additional Changes

• fix: release pooled redis entries and clarify SetEntry version semantics by @feichai0017 in 2eae696
• refactor: remove SetEntry API and add SetWithTTL by @feichai0017 in 31053fd

New Contributors

• @nothiny made their first contribution in #75
• @CyberSleeper made their first contribution in #101

Full Changelog: v0.6.1...v0.7.0

What's Changed

• docker: bump golang from 1.25 to 1.26 by @dependabot[bot] in #68
• deps(deps): bump google.golang.org/grpc from 1.78.0 to 1.79.1 by @dependabot[bot] in #69
• feat: add batch insert support for badger and pure insert workload by @ByteByteUp in #70
• fix: add refcount lifecycle validation with panic on invalid state by @ByteByteUp in #72
• fix: add underflow guard to request.DecrRef by @hacker4257 in #74
• fix: resolve locks during read operations by @zzzzwc in #77
• fix: add underflow check in DecrRef method and corresponding test by @zqr10159 in #67
• fix: add refcount underflow guards to ART.DecrRef and table.DecrRef by @vasilytrofimchuk in #78
• fix: enforce strong durability semantics in LogFile.DoneWriting by @ByteByteUp in #82

New Contributors

• @hacker4257 made their first contribution in #74
• @vasilytrofimchuk made their first contribution in #78

Full Changelog: v0.6.0...v0.6.1

What's Changed

• deps(deps): bump golang.org/x/sys from 0.40.0 to 0.41.0 by @dependabot[bot] in #34
• deps(deps): bump github.com/pelletier/go-toml/v2 from 2.2.3 to 2.2.4 by @dependabot[bot] in #35
• deps(deps): bump github.com/dgraph-io/badger/v4 from 4.9.0 to 4.9.1 by @dependabot[bot] in #37
• deps(deps): bump github.com/panjf2000/ants/v2 from 2.11.4 to 2.11.5 by @dependabot[bot] in #36
• refactor: unify metrics collection and stats export by @feichai0017 in #38
• refactor: split raftstore store services and reduce duplication by @feichai0017 in #50
• feat: support min_commit_ts validation for percolator commit by @zzzzwc in #51
• fix: commit secondary when primary already committed by @zzzzwc in #53
• fix: unify Entry lifecycle ownership across DB/Txn read paths by @feichai0017 in #56
• fix(txn): decrement active txn counter for empty commits by @zqr10159 in #64
• fix: attempt to close all resources in DB.Close() even on error by @ByteByteUp in #65
• refactor: unify storage IO on vfs and add file-level fault injection by @feichai0017 in #66

New Contributors

• @zzzzwc made their first contribution in #51
• @zqr10159 made their first contribution in #64
• @ByteByteUp made their first contribution in #65

Full Changelog: v0.5.0...v0.6.0

v0.5.0

Highlights

• Bucketed ValueLog (hashkv) with hot/cold routing for better large-value isolation and GC control
• HotRing externalized and split into read/write tracking; new write-hot metrics exposed
• TOML-based engine config loader for embedded deployments

Storage / ValueLog

• Bucketed ValueLog with hot/cold buckets
• Parallel VLog GC with compaction/backlog pressure control
• Fixes for GC skip thresholds and candidate filtering

HotRing & Observability

• Read/write HotRing split to avoid read hotness impacting write throttling
• Added HotWriteKeys / HotWriteRing metrics
• HotRing defaults and config normalization tuned

Config & UX

• New TOML loader: LoadOptionsFile / ApplyOptionsFile
• Example config: nokv.options.toml

Fixes

• Hardened raftstore reads and MVCC scans
• Iterator ordering and write-throttle alignment fixes

Docs

• Expanded HotRing/VLog/Compaction docs
• DBDB badge

This release provides critical security fixes, cache stability improvements, and enhanced CI/CD integration. It addresses issues identified by CodeQL and optimizes the W-TinyLFU cache implementation for long-term stability.

🚀 Key Highlights

🛡️ Security Fixes

• LSM/FID Boundary Check: Fixed a high-severity integer overflow vulnerability in SSTable file ID parsing (utils.FID). This prevents potential memory corruption or logical errors when processing large file IDs. (Addressed CodeQL scan alert).

⚡ Cache Optimization (W-TinyLFU)

• Automatic Freshness (Reset Mechanism): Fixed a bug where the threshold for Frequency Sketch and Bloom Filter resets was uninitialized. Resets now trigger every 10 * size operations, preventing historical data from polluting the frequency estimates.
• Improved Entry Validation: Added explicit bounds checks in the Set path for the internal cache. Key hashes exceeding uint32 are now handled safely without silent truncation, ensuring consistency with the Get logic.

🛠 Infrastructure & CI/CD

• AI-Powered Code Review: Integrated CodeRabbit for automated PR reviews, configured specifically for the Go toolchain (go-vet, golangci-lint).
• Dependency Updates: Bumped github.com/panjf2000/ants/v2 to v2.11.4 for improved concurrency pooling stability.

📈 What's Changed

• fix(cache): initialize reset threshold for TinyLFU by @feichai0017
• fix(security): prevent integer overflow in FID parsing by @feichai0017
• chore: add .coderabbit.yaml for intelligent PR analysis
• deps: upgrade ants/v2 pool manager

🔗 Full Changelog
For a detailed list of all 100 commits since v0.4.1, please refer to the commit history
(v0.4.1...v0.4.2).

Highlights

• Refined the value log write pipeline by centralizing batch append logic
  in vlog.Manager, reducing duplicate buffering and simplifying error
  handling.
• Added a clear two‑stage commit flow (value log → apply) to improve
  throughput and reduce blocking on write-heavy workloads.

Changes

• Value log write path now uses AppendEntries with a write mask; rotation
  handled inside the manager.
• Removed duplicate Sync Pool usage for vlog entry buffers.
• Added safer head reads in vlog manager (locked snapshot for Head/
  ActiveFID/MaxFID) to eliminate data races.
• Moved value log max size sync to initialization/update time instead of
  every write.
• Updated docs to reflect the current commit pipeline and vlog/WAL
  ordering.

Notes

• make test-race is clean for data races; however, TestValueGC may still
  fail intermittently and needs follow-up.
• If you require strict durability under power loss, consider syncing vlog
  before WAL when SyncWrites is enabled.

Highlights

• Unified all local and container scripts around a single raft_config.json, preventing config drift and skipping manifest reseeding when stores already exist.
• Added Redis gateway improvements: configurable address scope, better retry loops, and documentation for embedding and Docker Compose usage.
• Extended the raftstore API with batch KV reads and read-index support while tightening shutdown and replay paths.

Details

Features

• Align local cluster bootstrap, serve scripts, and Docker Compose with the shared topology JSON; existing store directories are reused automatically.
• Introduce the binary manifest tooling and supplemental helpers for config-managed bootstraps.
• Support KvBatchGet RPC and read index reads across raftstore clients.

Performance

• Reduce range copy overhead and streamline commit scheduling in the storage engine.
• Refresh benchmark harness defaults to track the regressions that motivated these changes.

Fixes

• Harden lsm shutdown paths and add regression coverage around DB.Close.
• Improve Redis gateway retries to recover from transient transport errors.
• General code cleanups and gofmt touch-ups.

Documentation

• Refresh README with feature table and Quick Start matrix covering embedded, distributed, and Redis modes.
• Expand scripts documentation to explain the new reuse behaviour and topology workflows.

Verification

• go test ./...