Integrating Facebook, but where's the best place to store variables like login status?

I have integrated Facebook into my site, but where is the best plac开发者_如何学Ce to store things like current login status? For example,

window.fbAsyncInit = function() {
    DS.fb.sdk.init();
    DS.fb.user.login();
}

gets the login status of the user, but do I save this status into cookies/databases or is there a more efficient way of saving it? If it's any help, I also want to store a lot of other things like current location etc.

Also, as a side question, are there good example links of sites that have Facebook integrated and show how they integrate Facebook and store data of the user?

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Sessions are always very good to use. You can use information into session variables rather than storing them in database then extracting again from database.