ParadeDB vs Vespa
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | ParadeDB | Vespa |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 92 · Excellent | 91 · Excellent |
| Category | Search Engines | Search Engines |
| License | AGPL-3.0 | Apache-2.0 |
| Language | Rust | Java |
| Setup difficulty | Medium | Hard |
| Min. RAM | 1,024 MB | 4,096 MB |
| Deployment | docker, source | docker, kubernetes, bare-metal |
| GitHub stars | ★ 9,301 | ★ 7,109 |
| First released | 2023 | 2017 |
| Replaces | Elasticsearch | Elasticsearch, Algolia |
What are ParadeDB and Vespa?
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
Vespa
Vespa is an open-source platform for low-latency computation over large data sets, powering search, recommendation and AI applications. It combines storing, searching, ranking and organizing data.
- Combined search and ML ranking
- Vector and tensor computation
- Real-time indexing at scale
- Used for large recommendation systems
ParadeDB vs Vespa: key differences
ParadeDB is written in Rust, while Vespa is built with Java. Licensing differs — AGPL-3.0 for ParadeDB versus Apache-2.0 for Vespa. ParadeDB is the lighter option, starting around 1,024 MB of RAM against 4,096 MB for Vespa. Vespa is the more established project (first released 2017), while ParadeDB arrived in 2023.
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 Vespa if…
- Extremely powerful and scalable
- Built-in ML ranking
Watch out for
- Steep learning curve
- Heavy resource needs
Frequently asked questions
Is ParadeDB or Vespa better?
ParadeDB is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Vespa if its specific feature set fits your needs better.
Are ParadeDB and Vespa free and open-source?
Yes. ParadeDB is licensed under AGPL-3.0 and Vespa under Apache-2.0. Both can be self-hosted at no software cost.
Can I run ParadeDB and Vespa with Docker?
ParadeDB: yes. Vespa: yes.
Which is lighter on resources, ParadeDB or Vespa?
ParadeDB has the smaller minimum footprint at 1,024 MB of RAM, compared to about 4,096 MB for Vespa. Real-world usage depends on library size, user count, and enabled features.