v4.20.4

tt-a1i/archifyv4.20.4Aug 20, 2026by swilly22

AI Summary

This release focuses on stabilizing replica synchronization by fixing SIGSEGV errors during divergence and improving performance by making graph decoding incremental rather than full sync.

Key Highlights

Fixed replica SIGSEGV crash when divergence occurs between master and replicas
Rebuilt transpose matrices incrementally during RDB decoding for faster loading
New public APIs allow external modules to manage graph encoding versions

New Features

New public API: Graph_EncodingVersion
New public API: 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