bleve vs RediSearch
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | bleve | RediSearch |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 93 · Excellent | 90 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | RSALv2 |
| Language | Go | Rust |
| Setup difficulty | Medium | Medium |
| Min. RAM | 128 MB | 512 MB |
| Deployment | source, binary | docker, kubernetes, binary |
| GitHub stars | ★ 11,226 | ★ 6,241 |
| First released | 2014 | 2017 |
| Replaces | Elasticsearch, Algolia | Elasticsearch, Algolia |
What are bleve and RediSearch?
bleve
An embeddable modern full-text search and indexing library that lets developers add search to applications without running a separate server. It supports analyzers, faceting, and scoring out of the box.
- Embeddable index
- Text analyzers
- Faceted search
- Pluggable storage
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
bleve vs RediSearch: key differences
Bleve is written in Go, while RediSearch is built with Rust. Licensing differs — Apache-2.0 for bleve versus RSALv2 for RediSearch. Bleve is the lighter option, starting around 128 MB of RAM against 512 MB for RediSearch. Bleve is the more established project (first released 2014), while RediSearch arrived in 2017. RediSearch lists first-class Docker deployment; bleve does not.
Why pick each one
Choose bleve if…
- No separate server
- Pure Go integration
Watch out for
- Library not turnkey app
- Manual scaling
Choose RediSearch if…
- Very fast, in-memory
- Reuses existing Redis
Watch out for
- Source-available, not OSI licensed
Frequently asked questions
Is bleve or RediSearch better?
Neither is universally better. bleve has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are bleve and RediSearch free and open-source?
Yes. bleve is licensed under Apache-2.0 and RediSearch under RSALv2. Both can be self-hosted at no software cost.
Can I run bleve and RediSearch with Docker?
bleve: check the project docs for container support. RediSearch: yes.
Which is lighter on resources, bleve or RediSearch?
bleve has the smaller minimum footprint at 128 MB of RAM, compared to about 512 MB for RediSearch. Real-world usage depends on library size, user count, and enabled features.