---
title: Apache Solr for TYPO3 - Powerful Index Server
url: "https://www.typo3-solr.com/what-is-solr/how-it-works/"
description: Apache Solr is a REST based indexing and search server application. Based on JAVA and the Lucene Core it requires to be run in a J2EE servlet container such as Tomcat or Jetty.
date: 2021-08-30
modified: 2021-08-30
lastUpdated: 2025-12-05
---

# Apache Solr for TYPO3 - Powerful Index Server

1. [Home](https://www.typo3-solr.com/)
2. [What is Solr](https://www.typo3-solr.com/what-is-solr/)
3. How it works

  Powerful Index Server
=====================

Apache Solr is a REST based indexing and search server application. It is based on JAVA and the Lucene Core. It requires to be run in a J2EE servlet container such as Tomcat or Jetty.

[See Solr Wiki for more Details](https://cwiki.apache.org/confluence/display/solr/SolrInstall "See Solr Wiki for more Details").

The main components are:
------------------------

- Importhandler
- Lucene index
- Searchhandler
- Queryhandler
- Responsehandler
- Updateprocesor
- Filter

More information about the JAVA Classes can be found at the website of [Apache Solr](https://solr.apache.org/docs/9_10_0/index.html "Website of Lucene Apache Solr")