v4.20.4

bytedance/flowgram.aiv4.20.4Aug 20, 2026by swilly22

AI Summary

A bug fix release addressing a SIGSEGV crash in effect replication when nodes or edges diverge and improving graph loading performance by removing full sync from the decoder.

Key Highlights

Fixed SIGSEGV crash on UPDATE_EDGE/UPDATE_NODE divergence.
Removed full sync from decoder for faster loading of persisted graphs.
Exported Graph_EncodingVersion and Graph_GetDecoder APIs for external modules.

New Features

Exported public APIs for external modules to stamp dumps with encoding versions and select matching 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