# Solr

> Solr is a mature open-source search engine that has incorporated vector search capabilities, making it relevant for enterprises looking to implement vector-based search alongside traditional keyword search.

- **URL:** https://solr.apache.org/
- **Category:** vector-database-engines
- **Tags:** Open Source, Vector Search, Hybrid Search, Enterprise
- **Updated:** 2025-05-13 22:29
- **Canonical page:** https://vectordb.ever.works/id/items/solr

## Details

# Solr

- **Website:** [https://solr.apache.org/](https://solr.apache.org/)
- **Category:** Vector Database Engines
- **Tags:** open-source, vector-search, hybrid-search, enterprise

## Description
Solr is an open-source, multi-modal search platform built on Apache Lucene™. It supports full-text, vector, and geospatial search, and is designed for high reliability, scalability, and fault tolerance. Solr is widely used for powering search and navigation features in large-scale websites and applications.

## Features
- Full-text search capabilities
- Vector search support for modern retrieval methods
- Hybrid search (combining keyword and vector search)
- Geospatial search
- Distributed indexing and search (SolrCloud)
- Replication and load-balanced querying
- Automated failover and recovery
- Centralized configuration management
- Faceting and advanced filtering
- Real-time indexing
- Pluggable architecture for extensions and plugins
- Advanced statistics and aggregations
- Rich content handling (integration with tools like Apache Tika)
- Spatial (geolocation) search features
- Detailed query and index management APIs
- Docker and Kubernetes deployment options
- Web-based user interface for management

## Pricing
Solr is open-source software licensed under the Apache License, Version 2.0, and is free to use.

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