MariaDB is a mysql based product like the Percona stuff right? I assume most users would switch to MySQL proper.

Postgres is often a better choice, but not an easy one for shops already in the mysql world.

This article quotes the “1/3 of 1%” number for large scale property investors. Seems like the vast majority of property buys are still people that intend to live there, though the “49% of 26%” (btw why are all the statistics in these weird formats???) are 1-9 property owners”mom and pop” investors. That number is actually way bigger than i thought. I could see this being a problem is some locations more than others though. That might make the problem feel bigger in some areas.

I wish they where less common, but it does seem like a good idea to do some challenges before interviewing especially for low to mid level jobs. There are a number of good sources. I like “Project Euler”. a lot of the popular options like hackerrank or codesignal are very gamified. Go for it if that is your thing, but i find scores and points feel very dehumanizing for me.