v4.20.4

Mesh-LLM/mesh-llmv4.20.4Aug 20, 2026by swilly22

AI Summary

This release fixes critical stability issues where replicas crashed due to divergence, optimizes graph loading performance, and exposes new APIs for graph versioning.

Key Highlights

Fixes replica SIGSEGV crashes by triggering a full resync when effects reference non-existent nodes or edges
Optimizes graph loading performance by removing full sync from the decoder and rebuilding matrices incrementally
Exports new public APIs: Graph_EncodingVersion and Graph_GetDecoder for graph-offloading support

New Features

New public APIs: Graph_EncodingVersion and Graph_GetDecoder

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