Module vector_index_optimizer 

Vector Index Optimizer

Selects and maintains optimal vector index structures based on workload analysis. Supports Flat, IVF-Flat, Product Quantization, HNSW-like, LSH, and Tree structures. Uses pure-Rust cost models to recommend and maintain the best index for a given workload.

Structs

IndexRecommendation

Recommendation produced by the optimizer.

IndexStats

Snapshot of a live index’s runtime statistics.

OptimizerConfig

Configuration for the VectorIndexOptimizer.

OptimizerStats

Aggregate statistics for the optimizer itself.

VectorIndexOptimizer

Production-quality vector index optimizer.

WorkloadProfile

Workload characteristics used to drive index selection.

Enums

IndexStructure

Supported index structures for approximate nearest-neighbour search.

MaintenanceAction

Maintenance operation to be applied to an index.

OptimizationCriterion

Criterion used to compare and select index structures.

OptimizerError

Errors produced by the optimizer.

Functions

xorshift64

Xorshift64 PRNG — advances state and returns the next pseudo-random u64.

xorshift_f64

Returns a pseudo-random f64 in [0, 1) using xorshift64.

Type Aliases

VioIndexStats

Type alias for IndexStats (re-exported as VioIndexStats to avoid conflict with stats::IndexStats which is already exported at crate level).

VioOptimizerConfig

Type alias for OptimizerConfig (re-exported as VioOptimizerConfig to avoid conflict with semantic_query_optimizer::OptimizerConfig which is already exported at crate level).

VioOptimizerError

Type alias for OptimizerError (re-exported as VioOptimizerError to avoid conflict with semantic_query_optimizer::OptimizerError which is already exported at crate level).

VioOptimizerStats

Type alias for OptimizerStats (re-exported as VioOptimizerStats to avoid conflict with semantic_query_optimizer::OptimizerStats which is already exported at crate level).