---
title: Apache Solr for TYPO3 - The Index Maintenance
url: "https://www.typo3-solr.com/solr-for-typo3/development-model/indexing/index-maintenance/"
description: "Index Maintenance in Solr for TYPO3: a garbage collector removes docs when content is deleted, hidden, expired, user groups change or 'No Search' is set—keeping the index clean."
date: 2021-09-03
modified: 2025-11-05
lastUpdated: 2025-11-24
---

# Apache Solr for TYPO3 - The Index Maintenance

1. [Home](https://www.typo3-solr.com/)
2. [Solr for TYPO3](https://www.typo3-solr.com/solr-for-typo3/)
3. [Development Model](https://www.typo3-solr.com/solr-for-typo3/development-model/)
4. [Indexing](https://www.typo3-solr.com/solr-for-typo3/development-model/indexing/)
5. Index Maintenance

  Index Maintenance
=================

 A garbage collector keeps track of records and events which would make them disappear from the website. These events include deleting, setting hidden, setting start / stop times, setting user groups, and for pages setting the “No Search” flag.

The garbage collector will remove the affected index documents related to the specific record from the index.

This is working quite well already but may need some finetuning.

  ![Progress bar at 80%](https://www.typo3-solr.com/fileadmin/_processed_/2/2/csm_80prozent_01_9ec248e713.png) **Status of Implementation**

- [Back to all components of Indexing](https://www.typo3-solr.com/solr-for-typo3/development-model/indexing/)
- [Back to all components of the development Model](https://www.typo3-solr.com/solr-for-typo3/development-model/#c2297)