README

This extension provides a simple command line tool for warming up certain caches.

This extension is especially useful for large installations that deploy and then flush caches.

Supported TYPO3 versions: v12 LTS, v13 LTS and v14 LTS.

Rootline Cache

One of the main issues here is a large installation with lots of pages. A cache:flush will empty the information on the rootline cache. When a visitor visits the page again after flushing the cache, and the page has 100 links to other pages, the rootline for each of the page will be built. This could take several seconds. A second visitor could visit the page and then see the nice "Page is being generated" screen. This can be improved!

A command line script runs directly after cache:flush and warms up all caches. This is mostly cache_core (by running the script itself) and cache_rootline.

vendor/bin/typo3 cache:warmupPages

The command takes an optional argument to limit the work:

vendor/bin/typo3 cache:warmupPages all       # default: rootline + pages
vendor/bin/typo3 cache:warmupPages rootline  # only the rootline cache
vendor/bin/typo3 cache:warmupPages pages     # only render the pages

Running the script multiple times does not matter, as it solely acts as a wrapper for fetching the rootline for a page. If it is already in the cache, the command runs smoothly.

Pages are requested for every combination of frontend user groups that is relevant for them (fe_group of the page itself plus all fe_group values inherited via extendToSubpages in the rootline), so access-restricted pages get a warm cache as well.

Installation

Install the extension via composer with composer req b13/warmup.

In classic (non-composer) installations, extract the contents of this folder into typo3conf/ext/warmup and activate the extension in the Extension Manager. Note that TYPO3 v14 requires a valid composer.json in every extension, also in classic mode.

Notes

Note that this extension does not take workspaces or mount points into account currently! Contributions are welcome.

Credits

• Benni Mack

License

GPL2.0+, see LICENSE.txt for more details.