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v4.20.4

imbhargav5/open-recorderv4.20.4Aug 20, 2026by swilly22

Upgrading?

What changed from v1.102.3 → v4.20.4?What's new in v0.25.5 after v4.20.4?

AI Summary

Fixes a critical crash in replicas caused by divergent effects and improves performance by optimizing the RDB decoder with incremental matrix rebuilding.

Key Highlights

  • Fixes replica SIGSEGV crash when effects reference non-existent nodes or edges
  • Performance improvement: incremental matrix rebuilding in decoder instead of full sync
  • New public APIs: Graph_EncodingVersion and Graph_GetDecoder for external modules

New Features

  • New public APIs for graph serialization and encoding versioning

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

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