Apache Solr
Apache Solr is a popular, open source enterprise search platform built on Apache Lucene. It provides full-text search, hit highlighting, faceted search, dynamic clustering and database integration. Solr powers the search and navigation features of many large websites and applicat
Apache Solr: Open Source Enterprise Search Platform
Apache Solr is a popular, open source enterprise search platform built on Apache Lucene. It provides full-text search, hit highlighting, faceted search, dynamic clustering and database integration. Solr powers the search and navigation features of many large websites and applications.
What is Apache Solr?
Apache Solr is a highly reliable, scalable and fault tolerant search engine. It provides distributed searching, indexing and load-balanced querying for large scale data sets. Solr is the popular enterprise search server based on the Lucene Java search library.
Key features of Solr include:
- Full text search
- Hit highlighting
- Faceted search
- Dynamic clustering
- Database integration
- Rich document handling (Word, PDF, XML, etc)
- Custom user interfaces
- Scalability and fault tolerance
- Advanced caching
- Latest search features (relevancy tuning, spell checking, autocorrect, etc)
Solr powers the search and navigation features of many large websites and applications. Major web sites and organizations using Solr include Netflix, Best Buy, Instagram, Apple, Bloomberg and the United Nations. It can handle high volume traffic with fast response times.
Solr is highly flexible and customizable to specific search requirements. It has REST-like HTTP interfaces to enable communication between Solr and applications. There is also an advanced Admin UI and dashboard for managing Solr servers and indexes.
Solr runs as a standalone full-text search server. It uses the Lucene Java search library at its core for full-text indexing and search, and has a plethora of APIs for extensive customization. Solr is written in Java and runs as a standalone JVM instance.
Apache Solr Features
Features
- Full-text search
- Hit highlighting
- Faceted search
- Dynamic clustering
- Database integration
Pricing
- Open Source
Pros
Open source
Scalable
Fast search performance
Rich features
Large user community
Cons
Steep learning curve
Complex configuration
No built-in GUI
Requires expertise to tune and optimize
Official Links
Reviews & Ratings
Login to Review3.6
★
★
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★
2 reviews
Rating Breakdown
Ease of Use
★
★
★
★
★
2.5
Features
★
★
★
★
★
5.0
Value for Money
★
★
★
★
★
4.0
Customer Support
★
★
★
★
★
2.5
Overall Experience
★
★
★
★
★
3.0
Recent Reviews
annacode12
Mar 11, 2026
★
★
★
★
★
Scalable Search Powerhouse with a Learning Curve
As a developer who implemented Solr for our e-commerce platform, I can say it's transformed our search capabilities. The faceted navigation and hit highlighting work flawlessly, and it handles millions of documents without breaking a sweat. Once you get past …
dakota_white20
Mar 11, 2026
★
★
★
★
★
Powerful but Painfully Complex for Small Teams
While Solr's search capabilities are undeniably powerful, the learning curve is incredibly steep for a small development team. We spent weeks just getting a basic cluster configured properly, and the documentation feels like it's written for experts by experts. When …
Rating Distribution
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