Qdrant vs RediSearch
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
Qdrant
High-performance open-source vector search engine
VS
RediSearch
Full-text and vector search module for Redis
| Feature | Qdrant | RediSearch |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 98 · Excellent | 90 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | RSALv2 |
| Language | Rust | Rust |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 512 MB |
| Deployment | docker, kubernetes, helm | docker, kubernetes, binary |
| GitHub stars | ★ 34,775 | ★ 6,242 |
| First released | 2021 | 2017 |
| Replaces | Pinecone, Algolia | Elasticsearch, Algolia |
What are Qdrant and RediSearch?
Qdrant
Qdrant is an open-source vector similarity search engine and database written in Rust. It powers semantic search, recommendations and retrieval-augmented generation with a convenient API.
- Fast vector similarity search
- Payload filtering with vectors
- Distributed clustering
- REST and gRPC APIs
RediSearch
RediSearch, part of the Redis Query Engine, adds full-text search, secondary indexing and vector search capabilities to Redis. It enables fast querying over data already stored in Redis.
- Full-text search inside Redis
- Secondary indexing of Redis data
- Vector similarity search
- Aggregations and queries
Qdrant vs RediSearch: key differences
Both projects are written in Rust. Licensing differs — Apache-2.0 for Qdrant versus RSALv2 for RediSearch. RediSearch is the more established project (first released 2017), while Qdrant arrived in 2021. Qdrant has the considerably larger community, at 34,775 GitHub stars versus 6,242.
Why pick each one
Choose Qdrant if…
- Excellent performance
- Easy to deploy
Watch out for
- Specialized for vector workloads
Choose RediSearch if…
- Very fast, in-memory
- Reuses existing Redis
Watch out for
- Source-available, not OSI licensed
Frequently asked questions
Is Qdrant or RediSearch better?
Neither is universally better. Qdrant has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Qdrant and RediSearch free and open-source?
Yes. Qdrant is licensed under Apache-2.0 and RediSearch under RSALv2. Both can be self-hosted at no software cost.
Can I run Qdrant and RediSearch with Docker?
Qdrant: yes. RediSearch: yes.