Nowadays I don't usually configure any swap on my servers. When a web application starts using swap it is already failing - its not really providing any contingency / safety net. At least that's what I thought up until today.
I was looking at an ELK cluster built by one of my colleagues. Where saw this:
$ free -m total used free shared buff/cache available Mem: 63922 50151 5180 1 8590 12907 Swap: 16383 10933 5450