RediSearch 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 | RediSearch | Vald |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 90 · Excellent | 85 · Excellent |
| Category | Search Engines | Search Engines |
| License | RSALv2 | Apache-2.0 |
| Language | Rust | Go |
| Setup difficulty | Medium | Hard |
| Min. RAM | 512 MB | 2,048 MB |
| Deployment | docker, kubernetes, binary | kubernetes, helm, docker |
| GitHub stars | ★ 6,242 | ★ 1,730 |
| First released | 2017 | 2020 |
| Replaces | Elasticsearch, Algolia | Pinecone, Elasticsearch |
What are RediSearch and Vald?
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
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
RediSearch vs Vald: key differences
RediSearch is written in Rust, while Vald is built with Go. Licensing differs — RSALv2 for RediSearch versus Apache-2.0 for Vald. RediSearch is the lighter option, starting around 512 MB of RAM against 2,048 MB for Vald. RediSearch is the more established project (first released 2017), while Vald arrived in 2020. RediSearch has the considerably larger community, at 6,242 GitHub stars versus 1,730.
Why pick each one
Choose RediSearch if…
- Very fast, in-memory
- Reuses existing Redis
Watch out for
- Source-available, not OSI licensed
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 RediSearch or Vald better?
RediSearch is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Vald if its specific feature set fits your needs better.
Are RediSearch and Vald free and open-source?
Yes. RediSearch is licensed under RSALv2 and Vald under Apache-2.0. Both can be self-hosted at no software cost.
Can I run RediSearch and Vald with Docker?
RediSearch: yes. Vald: yes.
Which is lighter on resources, RediSearch or Vald?
RediSearch has the smaller minimum footprint at 512 MB of RAM, compared to about 2,048 MB for Vald. Real-world usage depends on library size, user count, and enabled features.