What is the best way to cache a custom IPrincipal for a asp.net mvc website?

I have implemented a custom IPrincipal that I set in

 protected void Application_PostAuthenticateRequest(Object开发者_运维知识库 sender, EventArgs args)

by doing

Context.User = GetCustomPrincipal(User.Identity);
Thread.CurrentPrincipal = Context.User;

But my custom principal hits the database and gets custom information about the user. I don't want it hitting the database repeatedly for every request.

What is the best way to cache this? I was thinking of storing it in the Session, is that a good idea?

EDIT: Stupid me. Session is not even available in this method, should have tested before posting the question.

But question still remains..

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The standard approach is to store the data in the auth cookie. If you aren't using cookies, you can store the data in session.