v4.20.4

makeplane/planev4.20.4Aug 20, 2026by swilly22

AI Summary

This release focuses on stabilizing graph replication by fixing SIGSEGV crashes caused by diverging node references and improves performance during graph loading. It also exposes new public APIs to support external graph offloading modules.

Key Highlights

Fixed replica crash (SIGSEGV) when node/edge references diverge during updates
Improved graph loading performance by removing full sync from the decoder
Exposed public APIs for graph serialization (Graph_EncodingVersion and Graph_GetDecoder)

New Features

Added public APIs for external modules to stamp dumps with encoding version and select decoders

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