SHSelfHostIndex

Apache Solr vs Milvus

A side-by-side comparison of two self-hosted search engines options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
AP Apache Solr Enterprise-grade open-source search platform VS MI Milvus Open-source vector database built for scalable similarity search
FeatureApache SolrMilvus
CategorySearch EnginesSearch Engines
LicenseApache-2.0Apache-2.0
LanguageJavaGo
Setup difficultyHardHard
Min. RAM1,024 MB4,096 MB
Deploymentdocker, kubernetes, bare-metaldocker, kubernetes, helm
GitHub stars★ 1,650★ 45,556
First released20062019
ReplacesElasticsearch, AlgoliaPinecone, Elasticsearch

Why pick each one

Choose Apache Solr if…

  • Mature and battle-tested
  • Powerful faceting
Apache Solr details

Choose Milvus if…

  • Scales to massive datasets
  • Mature vector ecosystem
Milvus details

Frequently asked questions

Is Apache Solr or Milvus better?

Neither is universally better. Milvus has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.

Are Apache Solr and Milvus free and open-source?

Yes. Apache Solr is licensed under Apache-2.0 and Milvus under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Apache Solr and Milvus with Docker?

Apache Solr: yes. Milvus: yes.

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