Crate frankensearch_embed 

Embedder implementations for the frankensearch hybrid search library.

Provides three tiers of text embedding:

• Hash (hash feature, default): FNV-1a hash embedder, zero dependencies, always available.
• Model2Vec (model2vec feature): potion-128M static embedder, fast tier (~0.57ms).
• FastEmbed (fastembed feature): MiniLM-L6-v2 ONNX embedder, quality tier (~128ms).

The EmbedderStack auto-detection probes for available models and configures the best fast+quality pair automatically.

Re-exports

pub use auto_detect::DimReduceEmbedder;

pub use auto_detect::EmbedderStack;

pub use auto_detect::ModelAvailabilityDiagnostic;

pub use auto_detect::ModelStatus;

pub use auto_detect::TwoTierAvailability;

pub use batch_coalescer::BatchCoalescer;

pub use batch_coalescer::CoalescedBatch;

pub use batch_coalescer::CoalescerConfig;

pub use batch_coalescer::CoalescerMetrics;

pub use batch_coalescer::Priority;

pub use cached_embedder::CacheStats;

pub use cached_embedder::CachedEmbedder;

pub use model_cache::ENV_DATA_DIR;

pub use model_cache::ENV_MODEL_DIR;

pub use model_cache::KnownModel;

pub use model_cache::MODEL_CACHE_LAYOUT_VERSION;

pub use model_cache::ModelCacheLayout;

pub use model_cache::ModelDirEntry;

pub use model_cache::ensure_cache_layout;

pub use model_cache::ensure_default_cache;

pub use model_cache::is_model_installed;

pub use model_cache::known_models;

pub use model_cache::model_file_path;

pub use model_cache::resolve_cache_root;

pub use model_manifest::ConsentSource;

pub use model_manifest::DOWNLOAD_CONSENT_ENV;

pub use model_manifest::DownloadConsent;

pub use model_manifest::MANIFEST_SCHEMA_VERSION;

pub use model_manifest::ModelFile;

pub use model_manifest::ModelLifecycle;

pub use model_manifest::ModelManifest;

pub use model_manifest::ModelManifestCatalog;

pub use model_manifest::ModelState;

pub use model_manifest::ModelTier;

pub use model_manifest::PLACEHOLDER_VERIFY_AFTER_DOWNLOAD;

pub use model_manifest::VerificationMarker;

pub use model_manifest::is_verification_cached;

pub use model_manifest::resolve_download_consent;

pub use model_manifest::verify_dir_cached;

pub use model_manifest::verify_file_sha256;

pub use model_manifest::write_verification_marker;

pub use model_registry::BAKEOFF_CUTOFF_DATE;

pub use model_registry::EmbedderRegistry;

pub use model_registry::RegisteredEmbedder;

pub use model_registry::RegisteredReranker;

pub use model_registry::registered_embedders;

pub use model_registry::registered_rerankers;

pub use hash_embedder::HashAlgorithm;

pub use hash_embedder::HashEmbedder;

Modules

auto_detect

Embedder auto-detection and fallback stack assembly.

batch_coalescer

Embedding batch coalescing with deadline-aware scheduling.

cached_embedder

Caching wrapper for any Embedder implementation.

hash_embedder

FNV-1a hash-based embedder for frankensearch.

model_cache

XDG-compliant model cache directory layout.

model_manifest

Model manifest definitions and verification helpers.

model_registry

Static model registry with runtime availability checks.

Structs

EmbeddedModelInstallSummary

Summary returned by the no-op lite-build materialization.

Functions

ensure_default_semantic_models

No-op: lite builds have no embedded models to materialize.