v4.20.4

windmill-labs/windmillv4.20.4Aug 20, 2026by swilly22

AI Summary

This release fixes a critical crash in effect replication and improves performance by optimizing graph decoding. It also exposes new public APIs for external modules to manage graph encoding versions.

Key Highlights

Replica SIGSEGV fix: no longer crashes when local node/edge divergence occurs
Performance: incremental matrix rebuilding during RDB decoding
New APIs: Graph_EncodingVersion and Graph_GetDecoder for external modules

New Features

New public APIs for graph offloading

Full Release Notes

## What's Changed

### Bug Fixes
* fix(effects): stop replica SIGSEGV on UPDATE_EDGE/UPDATE_NODE divergence - replicas no longer crash when an effect references a node or edge that no longer exists locally; the mismatch is now detected and triggers a full resync instead (#2581)

### Performance
* remove full sync from decoder - transpose matrices are rebuilt incrementally as delta-matrix components are set during RDB decoding instead of forcing a full sync at the end, speeding up loading of persisted graphs (#2584)

### Improvements
* serializers: export Graph_EncodingVersion and Graph_GetDecoder - new public APIs let external modules (e.g. graph-offloading) stamp dumps with their encoding version and select the matching decoder on load (#2552)

**Full Changelog**: https://github.com/FalkorDB/FalkorDB/compare/v4.20.3...v4.20.4