[tracker1]

It also doesn't specify a use-case. In a 98% read scenario with a good caching strategy it can easily do much more than 100k visitors per day. If you're taking in data from many devices you can easily bottleneck on writes.

It really depends. Also, configuring everything right gets hard. Most don't even think to do RAID over a few block storage devices, but that's something that comes with cloud storage. That doesn't count HA and other issues before getting to the application layer.

It's something that unless you're paying a full-time DBA, you are probably better off buying as a service. It's one of the few holes in DO's offerings and I'm very happy to see this.