v4.20.4

CoreBunch/Instaticv4.20.4Aug 20, 2026by swilly22

AI Summary

This release focuses on stability and performance improvements for graph persistence. It fixes a critical crash in replicas when graph structures diverge and optimizes the loading process by removing unnecessary full sync steps during decoding.

Key Highlights

Fixes SIGSEGV crash on replica divergence by triggering full resync instead of crashing.
Optimizes graph loading by rebuilding transpose matrices incrementally.
Adds new public APIs for external modules to manage graph encoding versions.

New Features

Incremental transpose matrix rebuilding during RDB decoding.
Public Graph_EncodingVersion and Graph_GetDecoder APIs for graph-offloading.

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