The research tells us that repeatedly concatenating strings together is a bad thing... WE ALREADY KNOW THIS!!! good grief, who taught these guys to code? The title of their paper "When In-Memory Computing is Slower than Heavy Disk Usage" implies heavy disk access where none exists. They actually go on to point out that it's the OS doing magic things that helps out. i.e. it's the OS using RAM to buffer the disk that keeps your app speedy. So erm... memory being used instead of disk then... the exact opposite of their claims
definition of robot...
landmines on the other hand only have a few simple states, "safe", "armed", "detonated", "dud" they are simple single purpose constructs. It's not right to call them robots in any technical sense.
Yes I could do as you say, but that is besides the point. The point is that the system works and does so within the resources limitations of a single board ARM computer despite the fact it is running systemd.
Don't get me wrong, I'm not a systemd advocate, I don't have it on any of my work servers yet, but equally where I have used it, it has been stable and simple enough and I have not noticed any particular "RAM bloatyness".
I remain open minded about the whole debate, I'll use whatever comes along next as long as it is stable, simple and it gets the job done. Systemd is different to sysvinit and it takes a bit of getting used to but it hasn't done anything evil to my system (yet).
I take a pragmatic approach to this sort of thing, If you don't like, don't use it. The guys building the main distros seem to like it however so you may end up having to use it if you are a Linux admin.