How to implement automatic caching in the Bitrix component?

Question

opencart

How to implement automatic caching in custom Bitrix components?
On the D7 core, components are inherited from the CBitrixComponent class, which implements the StartResultCache, EndResultCache, and AbortResultCache methods.

The signature of the StartResultCache method call does not imply some place for cache tagging, etc., how then to implement automatic cache clearing when updating elements (or categories) in the infoblock?

Answer 1

To mark the component cache with the infoblock dependency tag - inside the cached part (StartResultCache block) call:

$taggedCache = \Bitrix\Main\Application::getInstance()->getTaggedCache();
$taggedCache->registerTag('iblock_id_' . $iblockId);