Ah, yeah, seems to be pretty standard in Java stuff, which I avoided because of some experiences with Tomcat. ASP.NET uses a separate auth cookie from the session cookie. Even way back when I was doing PHP, it never occurred to me to lump the auth in with the session.
Sessions have made it on my list of top hated things, I wouldn't use them for anything. But, comparing auth cookie without session vs auth token, tokens look like the better option.
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