If you’re working to ensure your web application can tolerate more and bigger cookies (see my earlier post on cookie size in Nginx), you have to do it across your entire stack. I forgot to do this previously for my uWSGI application, and so today experienced a 502 Bad Gateway error because the cookies exceeded the default limit of 4kB.

I updated my uwsgi.ini file to add this statement:

buffer-size = 65536