One of the things I’ve always found frustrating about cookies is that you have to do your own encoding instead of the API doing it for you. I’m sure someone somewhere does but too often I’m doing my own urlencode calls.

Encoding is at least solvable, but every browser having their own cookie length versus some standard value makes that some nonsense. Kong actually has a plugin to split (and, of course, recombine) cookies just to work around this