v4.20.4

fregante/GhostTextv4.20.4Aug 20, 2026by swilly22

AI Summary

A maintenance release addressing a critical crash bug caused by replica divergence and improving performance during graph loading.

Key Highlights

Fixes SIGSEGV crash when replicas diverge from the master by triggering a full resync instead of crashing.
Improves graph loading speed by rebuilding transpose matrices incrementally during RDB decoding.
Exports new public APIs for encoding versioning to support external graph offloading modules.

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