ParadeDB vs Tantivy
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | ParadeDB | Tantivy |
|---|---|---|
| Deploy effort | ≈5-minute setup | Read-the-docs project |
| Health score | 92 · Excellent | 94 · Excellent |
| Category | Search Engines | Search Engines |
| License | AGPL-3.0 | MIT |
| Language | Rust | Rust |
| Setup difficulty | Medium | Hard |
| Min. RAM | 1,024 MB | 128 MB |
| Deployment | docker, source | source, binary |
| GitHub stars | ★ 9,301 | ★ 16,133 |
| First released | 2023 | 2016 |
| Replaces | Elasticsearch | Elasticsearch |
What are ParadeDB and Tantivy?
ParadeDB
ParadeDB is an open-source PostgreSQL-based platform that adds Elasticsearch-grade full-text search and analytics directly inside the database. It uses BM25 indexing so search can run alongside existing relational data.
- Search inside Postgres
- BM25 full-text indexing
- Analytical queries
- No separate search cluster
Tantivy
Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust. It is the foundation for several search engines and can be embedded directly into applications.
- Lucene-like full-text indexing
- Embeddable search library
- Fast and memory efficient
- Powers Quickwit and others
ParadeDB vs Tantivy: key differences
Both projects are written in Rust. Licensing differs — AGPL-3.0 for ParadeDB versus MIT for Tantivy. Tantivy is the lighter option, starting around 128 MB of RAM against 1,024 MB for ParadeDB. Tantivy is the more established project (first released 2016), while ParadeDB arrived in 2023. ParadeDB lists first-class Docker deployment; Tantivy does not.
Why pick each one
Choose ParadeDB if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Mature project with 9.3k GitHub stars
- Written in Rust
Choose Tantivy if…
- Very fast
- Embeddable in apps
Watch out for
- Library, not a turnkey server
Frequently asked questions
Is ParadeDB or Tantivy better?
Neither is universally better. Tantivy has the larger community, while ParadeDB is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are ParadeDB and Tantivy free and open-source?
Yes. ParadeDB is licensed under AGPL-3.0 and Tantivy under MIT. Both can be self-hosted at no software cost.
Can I run ParadeDB and Tantivy with Docker?
ParadeDB: yes. Tantivy: check the project docs for container support.
Which is lighter on resources, ParadeDB or Tantivy?
Tantivy has the smaller minimum footprint at 128 MB of RAM, compared to about 1,024 MB for ParadeDB. Real-world usage depends on library size, user count, and enabled features.