Milvus vs ParadeDB
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Milvus | ParadeDB |
|---|---|---|
| Deploy effort | Under-an-hour setup | ≈5-minute setup |
| Health score | 100 · Excellent | 92 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | AGPL-3.0 |
| Language | Go | Rust |
| Setup difficulty | Hard | Medium |
| Min. RAM | 4,096 MB | 1,024 MB |
| Deployment | docker, kubernetes, helm | docker, source |
| GitHub stars | ★ 46,245 | ★ 9,301 |
| First released | 2019 | 2023 |
| Replaces | Pinecone, Elasticsearch | Elasticsearch |
What are Milvus and ParadeDB?
Milvus
Milvus is an open-source vector database designed for scalable similarity search and AI applications. It can manage billions of vectors and supports semantic search and recommendation use cases.
- Billion-scale vector search
- Multiple index types
- Cloud-native distributed architecture
- Hybrid search support
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
Milvus vs ParadeDB: key differences
Milvus is written in Go, while ParadeDB is built with Rust. Licensing differs — Apache-2.0 for Milvus versus AGPL-3.0 for ParadeDB. ParadeDB is the lighter option, starting around 1,024 MB of RAM against 4,096 MB for Milvus. Milvus is the more established project (first released 2019), while ParadeDB arrived in 2023. Milvus has the considerably larger community, at 46,245 GitHub stars versus 9,301.
Why pick each one
Choose Milvus if…
- Scales to massive datasets
- Mature vector ecosystem
Watch out for
- Complex distributed deployment
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
Frequently asked questions
Is Milvus or ParadeDB better?
Neither is universally better. Milvus 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 Milvus and ParadeDB free and open-source?
Yes. Milvus is licensed under Apache-2.0 and ParadeDB under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Milvus and ParadeDB with Docker?
Milvus: yes. ParadeDB: yes.
Which is lighter on resources, Milvus or ParadeDB?
ParadeDB has the smaller minimum footprint at 1,024 MB of RAM, compared to about 4,096 MB for Milvus. Real-world usage depends on library size, user count, and enabled features.