v4.20.4

AprilNEA/OpenLogiv4.20.4Aug 20, 2026by swilly22

AI Summary

This release addresses a critical crash issue in replicas where divergence caused SIGSEGV errors when referencing non-existent nodes or edges. It also includes a performance optimization for graph loading by removing full sync from the decoder and adds new public APIs for controlling graph encoding versions.

Key Highlights

Fixes replica SIGSEGV crash on divergence during UPDATE_EDGE/UPDATE_NODE operations
Performance improvement: incremental matrix rebuilding during RDB decoding
New public APIs: Graph_EncodingVersion and Graph_GetDecoder for external modules

New Features

Graph_EncodingVersion and Graph_GetDecoder public APIs

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