AccelerateSearch

A self-hosted, production-grade search engine written in Rust.

AccelerateSearch combines the developer experience of Meilisearch with the analytical power of Elasticsearch, all in a single binary that runs on Linux, macOS, and Windows.

Warning

The project is in active development. APIs, on-disk formats, configuration keys, and CLI flags may change between releases. Pin a specific commit or release tag for stability.

Features

• Blazing-fast full-text search with BM25 ranking
• Lock-free concurrent reads with DashMap and parking_lot
• FST-backed term dictionaries for O(log n) prefix lookups and autocomplete
• Vector and hybrid search with scalar / product / binary quantization
• Fuzzy matching with bounded Damerau-Levenshtein typo tolerance
• Complex filter expressions (field = "value" AND rating > 4 OR location GEO_BBOX …)
• Facet distributions and stats for every field
• Per-collection settings: ranking rules, synonyms, stop words, typo tolerance, embedders, distinct field, …
• Webhooks that fire on document and index events
• Tenant tokens for short-lived, scoped access from the browser
• API keys with expiry, scopes, and per-collection ACLs
• Prometheus metrics at /metrics, structured logs via tracing
• Snapshots (tar + zstd) for backup and restore
• Single binary with no external services required

Where to go next

• Architecture overview
• REST API reference
• Configuration reference
• Deployment guide
• Development guide
• Rust API docs (cargo doc)

Project layout

crates/
  api/          REST handlers, DTOs, OpenAPI schema
  auth/         master key, API keys, tenant tokens
  cache/        LRU + TTL cache
  collections/  collection metadata service
  config/       TOML config & validation
  documents/    document service
  filters/      filter expression parser & evaluator
  hybrid/       RRF, score normalization
  highlighting/ <em> highlighting
  indexing/     tokenization + inverted index + FST
  metrics/      Prometheus exporter
  models/       shared data types
  search/       BM25, ranking, query parser
  security/     rate limit, CORS, audit logger
  server/       HTTP lifecycle, banner
  storage/      StorageBackend trait + redb
  synonyms/     synonym map storage and lookup
  tasks/        async task queue
  telemetry/    tracing-subscriber setup
  typo/         Damerau-Levenshtein
  utils/        hash, random, time helpers
  validation/   input validation & sanitization
  vector/       embedding types + quantization
config/         default.toml
docs/           this mdbook source
.github/        CI + release + docs workflows

Author

Muhammad Fiaz — contact@muhammadfiaz.com

License

Apache-2.0