Caching in Magento 2 – not just FPC
Magento 2 has included a variety of new areas to the caching engine, as can be seen from the following screenshot:
This is great for performance but also good to keep in mind when making changes to the site. Translation changes not showing up? You probably need to clear the cached translation files to fix this. As a rule of thumb, clearing the cache is a good first step when troubleshooting Magento.