in Mariadb - Can you cache the indexes and data for Aria Storage engine tables? I have a table that is a read-only table (real-time view), I used Aria based on the recommendation for read-heavy workload.
Based on this What are the main differences between InnoDB and MyISAM?
When it comes to cache is Aria like MyISAM or like InnoDB? meaning, Can I cache only indexes or can I also cache the data? (under the assumption I have large enough RAM)
As for now
We plan to also add CACHE INDEX for Aria tables if there is a need for this.

And as you can see that it is written in https://mariadb.com/kb/en/cache-index/ so that it would be more like the MyISAM, but as development and theory grows in time, we will see and wait, what they actually want to do qand implement.