v4.20.0

windmill-labs/windmillv4.20.0Jul 13, 2026by swilly22

AI Summary

Major version release introducing variable length traversal semantics and performance optimizations for pathfinding algorithms. It removes Bolt protocol support and enforces max identifier lengths.

Key Highlights

New Semantics: Variable Length Traversal and max identifier length enforcement
Performance: Optimized Dijkstra and single shortest path algorithms
Deprecation: Removed Bolt support
Bug Fix: Fixed defragmentation stalling and orphaned writes

Breaking Changes

Removed Bolt protocol support

New Features

Variable Length Traversal semantics
Max length on identifiers enforced

Full Release Notes

## What's Changed

### 🚀 Features & Semantics
* Variable Length Traversal semantics by @GomezGab in #2156
* Enforce a maximum length on identifiers by @GomezGab in #2108

### ⚡ Performance
* Improve algo.SPpaths single shortest path performance by @swilly22 in #2163
* Optimize dijkstra by @swilly22 in #2173
* Defrag locking by @swilly22 in #2175

### 🐛 Bug Fixes
* fix(defrag): don't stall or orphan writes under active defrag by @DvirDukhan in #2191

### 🔧 Changes
* remove bolt support by @swilly22 in .#2170

### 📦 Dependencies
* chore(deps): update libcurl to curl-8_21_0 by @github-actions[bot] in #2153

### 🧪 CI & Internal
* ci: RediSearch 8.6 build infrastructure by @DvirDukhan in #2101
* ci(build): decouple promote-toolchain from the app build by @DvirDukhan in #2113
* test(flow): increase code coverage with tests by @gkorland in #2067
* Fix coderabbit config by @gkorland in #1936

**Full Changelog**: https://github.com/FalkorDB/FalkorDB/compare/v4.18.11...v4.20.0