bleve 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 | bleve | Vespa |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 93 · Excellent | 91 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Java |
| Setup difficulty | Medium | Hard |
| Min. RAM | 128 MB | 4,096 MB |
| Deployment | source, binary | docker, kubernetes, bare-metal |
| GitHub stars | ★ 11,228 | ★ 7,109 |
| First released | 2014 | 2017 |
| Replaces | Elasticsearch, Algolia | Elasticsearch, Algolia |
What are bleve and Vespa?
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
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
bleve vs Vespa: key differences
Bleve is written in Go, while Vespa is built with Java. Bleve is the lighter option, starting around 128 MB of RAM against 4,096 MB for Vespa. Bleve is the more established project (first released 2014), while Vespa arrived in 2017. Vespa 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 Vespa if…
- Extremely powerful and scalable
- Built-in ML ranking
Watch out for
- Steep learning curve
- Heavy resource needs
Frequently asked questions
Is bleve or Vespa better?
bleve 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 bleve and Vespa free and open-source?
Yes. bleve is licensed under Apache-2.0 and Vespa under Apache-2.0. Both can be self-hosted at no software cost.
Can I run bleve and Vespa with Docker?
bleve: check the project docs for container support. Vespa: yes.
Which is lighter on resources, bleve or Vespa?
bleve has the smaller minimum footprint at 128 MB of RAM, compared to about 4,096 MB for Vespa. Real-world usage depends on library size, user count, and enabled features.