Index And Constraint Metadata Exposure For Query Optimization

via “scalar-index-creation-and-management-for-metadata-filtering”

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

Unique: Scalar indexes are created asynchronously without blocking concurrent queries, using a background indexing thread. The query planner integrates with DataFusion to automatically select indexed columns for filter pushdown, with cost-based optimization to avoid index overhead for small tables.

vs others: More flexible than Pinecone's predefined filter schemas because any column can be indexed; more efficient than Milvus because index selection is automatic and cost-based rather than requiring manual hints.