Apache Solr
The battle-tested open source search platform
★ 4.2
Enterprise search platform built on Apache Lucene. Powers search for Netflix, eBay, and others. Highly customizable with extensive plugin ecosystem.
Features
✓ Full-text search
✓ Faceted search
✓ Real-time indexing
✓ Distributed search (SolrCloud)
✓ Rich document parsing
✓ Geospatial search
✓ Machine learning integration
✓ Extensive plugin ecosystem
✓ Multi-language support
Pros
- + Extremely mature and stable
- + Highly customizable
- + Large community and ecosystem
- + Battle-tested at scale
- + Free and open source
Cons
- − Complex to configure properly
- − Requires operational expertise
- − Not cloud-native out of the box
- − Can be resource intensive