v3.8.51 v4.22.0
HKUDS/Vibe-TradingSep 30, 2026 → Sep 30, 20260 days between releases
What's New
Major version jump adds advanced pathfinding algorithms and CCH path index.
Breaking Changes
- Major version bump (3 to 4) may require code adjustments or configuration changes.
New Features
- New algo.AStar procedure for pathfinding with customizable heuristics.
- New algo.Yen procedure for k-shortest paths with goal-directed spur search.
- New db.idx.cch.query command for querying CCH indexes.
- Multi-reltype support for CCH indexes.
- A* search algorithm with optional heuristicScale for non-distance weights.
Improvements
- Optimality fixes for path costing and hop-count accounting.
- Incremental maintenance for CCH indexes with commit-coalesced dirty tracking.
- Full RDB serialization and persistence for CCH indexes.
- Replica transpose maintenance in Delta_set.
- Fixes ~1.6× suboptimal routes on time-weighted road networks.
Bug Fixes
- Crash on MERGE preceded by an erroring clause.
- Crash when a clause errors mid plan-build.
- Replica SIGSEGV applying UPDATE_EDGE/UPDATE_NODE effect naming a freed id.
Upgrade Notes
Upgrade introduces new DDL commands (CREATE/DROP CCH INDEX) and procedures (algo.AStar, algo.Yen) requiring script updates. The replication decoder now removes the full-sync requirement, potentially altering data propagation behavior. Test pathfinding queries thoroughly due to cost-model fixes.
The Two Releases
v3.8.51
Sep 30, 2026· 22 days ago
A massive update featuring 2,022 documented changes, including new providers like GPT-6 Astra/Sol/Luna, significant routing resilience improvements, proxy pool enhancements, and comprehensive security hardening.
Full release notesv4.22.0
Sep 30, 2026· 22 days ago
v4.22.0 introduces advanced pathfinding algorithms and a new Customizable Contraction Hierarchies (CCH) path index to the C engine.
Full release notes