bleve vs Elasticsearch
A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.
Elasticsearch
Distributed search and analytics engine
| Feature | bleve | Elasticsearch |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 93 · Excellent | 100 · Excellent |
| Category | Search Engines | Search Engines |
| License | Apache-2.0 | Elastic-2.0 |
| Language | Go | Java |
| Setup difficulty | Medium | Hard |
| Min. RAM | 128 MB | 2,048 MB |
| Deployment | source, binary | docker, kubernetes, bare-metal |
| GitHub stars | ★ 11,228 | ★ 77,969 |
| First released | 2014 | 2010 |
| Replaces | Elasticsearch, Algolia | Algolia, Splunk |
What are bleve and Elasticsearch?
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
Elasticsearch
Elasticsearch is a distributed, RESTful search and analytics engine capable of addressing a wide variety of use cases. It stores and indexes large volumes of data for fast full-text and structured search.
- Distributed full-text search
- Aggregations and analytics
- Horizontal scalability
- Rich query DSL
bleve vs Elasticsearch: key differences
Bleve is written in Go, while Elasticsearch is built with Java. Licensing differs — Apache-2.0 for bleve versus Elastic-2.0 for Elasticsearch. Bleve is the lighter option, starting around 128 MB of RAM against 2,048 MB for Elasticsearch. Elasticsearch is the more established project (first released 2010), while bleve arrived in 2014. Elasticsearch has the considerably larger community, at 77,969 GitHub stars versus 11,228. Elasticsearch 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 Elasticsearch if…
- Extremely powerful and mature
- Huge ecosystem
Watch out for
- Resource intensive
- Complex to tune
Frequently asked questions
Is bleve or Elasticsearch better?
Neither is universally better. Elasticsearch has the larger community, while bleve is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are bleve and Elasticsearch free and open-source?
Yes. bleve is licensed under Apache-2.0 and Elasticsearch under Elastic-2.0. Both can be self-hosted at no software cost.
Can I run bleve and Elasticsearch with Docker?
bleve: check the project docs for container support. Elasticsearch: yes.
Which is lighter on resources, bleve or Elasticsearch?
bleve has the smaller minimum footprint at 128 MB of RAM, compared to about 2,048 MB for Elasticsearch. Real-world usage depends on library size, user count, and enabled features.