Aria is a MariaDB storage engine that is always used internally. Its pagecache is the equivalent of InnoDB buffer pool, and this article is about sizing it properly.
It is important to understand which types of backups are available for MySQL and MariaDB databases, and to choose the best ones to use for a given use case. The webinar also gave hints to plan proper backup strategies, and to test them.
It’s not easy to find out if InnoDB Buffer Pool is oversized. However shrinking it could greatly reduce the resources we need and pay, and even improve performance.