Tantivy vs Vald
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Tantivy | Vald |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 94 · Excellent | 85 · Excellent |
| Category | Search Engines | Search Engines |
| License | MIT | Apache-2.0 |
| Language | Rust | Go |
| Setup difficulty | Hard | Hard |
| Min. RAM | 128 MB | 2,048 MB |
| Deployment | source, binary | kubernetes, helm, docker |
| GitHub stars | ★ 16,133 | ★ 1,730 |
| First released | 2016 | 2020 |
| Replaces | Elasticsearch | Pinecone, Elasticsearch |
What are Tantivy and Vald?
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
Vald
Vald is a highly scalable distributed vector search engine designed to run on Kubernetes for approximate nearest neighbor search over billions of vectors. It is used for similarity search in recommendation and AI applications.
- Distributed vector search
- Kubernetes-native
- Billion-scale indexes
- Approximate nearest neighbor
Tantivy vs Vald: key differences
Tantivy is written in Rust, while Vald is built with Go. Licensing differs — MIT for Tantivy versus Apache-2.0 for Vald. Tantivy is the lighter option, starting around 128 MB of RAM against 2,048 MB for Vald. Tantivy is the more established project (first released 2016), while Vald arrived in 2020. Tantivy has the considerably larger community, at 16,133 GitHub stars versus 1,730. Vald lists first-class Docker deployment; Tantivy does not.
Why pick each one
Choose Tantivy if…
- Very fast
- Embeddable in apps
Watch out for
- Library, not a turnkey server
Choose Vald if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Active community (1.7k GitHub stars)
Frequently asked questions
Is Tantivy or Vald better?
Neither is universally better. Tantivy has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Tantivy and Vald free and open-source?
Yes. Tantivy is licensed under MIT and Vald under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Tantivy and Vald with Docker?
Tantivy: check the project docs for container support. Vald: yes.
Which is lighter on resources, Tantivy or Vald?
Tantivy has the smaller minimum footprint at 128 MB of RAM, compared to about 2,048 MB for Vald. Real-world usage depends on library size, user count, and enabled features.