You can now use the AlloyDB columnar engine to act as a read-optimized, in-memory cache for HNSW indexes.

You can now use the AlloyDB columnar engine to act as a read-optimized, in-memory cache for HNSW indexes. This increases the number of queries per second (QPS) that your database can handle for vector search workloads. This feature is available in Preview.

For more information, see Accelerate vector search with the columnar engine.