Yes, and you can read the documentation which has links to the source code, e.g. here: https://wikitech.wikimedia.org/wiki/Caching_overview#Retention https://wi

Yes, and you can read the documentation which has links to the source code, e.g. here: https://wikitech.wikimedia.org/wiki/Caching_overview#Retention https://wikitech.wikimedia.org/wiki/Caching_overview#Retenti...