AspNetIdentity can be more problematic than you think - performance-wise

For most developers, the usage of AspNetUsers ends with the APIs - you use the API to create, update, query and delete users - and that’s it. Performance is usually an afterthought, if at all. It’s an official library from Microsoft, it must have good performance, right? I wish I could say, right. As with case of ASPNET Membership (are you old enough to remember it?), this has many performance…