---
title: "Introduction"
manual: "Warming"
version: "5.3"
permalink: "https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:introduction@5.3"
source: "Introduction/Index.rst"
rendered: "2026-11-05T08:37:00+00:00"
---

# Introduction {#introduction}

## What does it do? {#what-it-does}

The extension provides a service to warm up Frontend caches based on XML
sitemaps. Cache warmup can be triggered in various ways:

-   From the [TYPO3 backend](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:backend-toolbar@5.3)
-   Using a [console command](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:console-commands@5.3)
-   Directly with the [PHP API](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:using-the-api@5.3)

It supports multiple languages and custom crawler implementations.
Under the hood, the extension makes use of the [`eliashaeussler/cache-warmup`](https://packagist.org/packages/eliashaeussler/cache-warmup)
library which provides the core cache warmup implementation. In addition,
[EXT:sitemap_locator](https://extensions.typo3.org/extension/sitemap_locator) is used to locate XML sitemaps.

## Features {#features}

-   Frontend cache warmup of pages located in XML sitemaps
-   Integration in [TYPO3 backend toolbar](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:backend-toolbar@5.3) and
    [page tree](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:page-tree@5.3)
-   Support of various [sitemap providers](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:sitemap-providers@5.3)
    (e.g. `robots.txt` or custom location)
-   Multi-language support of configured sites
-   Support for [custom crawlers](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:crawlers@5.3) and
    [crawling strategies](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:crawling-strategies@5.3)
-   [Console commands](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:console-commands@5.3)
-   Compatible with TYPO3 13.4 LTS and 14.3 LTS (see [version matrix](https://docs.typo3.org/permalink/eliashaeussler/typo3-warming:version-matrix@5.3))

## Support {#support}

There are several ways to get support for this extension:

-   Slack: [https://typo3.slack.com/archives/C0400CSGWAY](https://typo3.slack.com/archives/C0400CSGWAY)
-   GitHub: [https://github.com/eliashaeussler/typo3-warming/issues](https://github.com/eliashaeussler/typo3-warming/issues)

## Security Policy {#security-policy}

Please read our [security policy](https://github.com/eliashaeussler/typo3-warming/blob/main/SECURITY.md)
if you discover a security vulnerability in this extension.

## License {#license}

This extension is licensed under
[GNU General Public License 2.0 (or later)](https://www.gnu.org/licenses/old-licenses/gpl-2.0.html).