Database Systems: The PostgreSQL Global Development Group has published its architectural vision for PostgreSQL 18, standardizing native vector index types directly within the core relational engine to obsolete standalone vector databases.
Native High-Dimensional HNSW Indexes
By bringing hierarchical navigable small-world (HNSW) vector graphs directly into the core query planner, PostgreSQL 18 allows hybrid queries combining relational filters and vector similarity with unified cost estimation.
Consensus-Driven Active-Active Replication
A new Raft-based consensus protocol allows multi-master write replication across disparate geographical regions without split-brain anomalies.
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