- Introduced a recommendation engine, extended recommendation API to accept raw vectors, added polygon geo‑filtering, shard update parallelism tuning, and distributed search to improve cluster performance.
- Enhanced search speed and memory usage with boolean index filtering, cardinality estimation fixes, automatic rescoring mode, immutable numeric index, and geo index memory reductions; added payload path retrieval.
- Resolved several critical bugs (collection deadlock, snapshot IO errors, range filter crash, initialization hang, batch update ordering), added gRPC health‑check method, and updated documentation.