Parsing memory usage in htop/top

I've been trying to figure out how much memory a node app is using on my VPS, and output from top or htop is fairly overwhelming. In searching around I found Mugurel Sumanariu's post clearly explaining each column related to memory usage.

The column I should be paying attention to is RES, which

[..] stands for the resident size, which is an accurate representation of how much actual physical memory a process is consuming. (This also corresponds directly to the %MEM column.)

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