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Best way to find Facebook / Twitter / Google friends using the same app

I am creating an MVC C # webapi database for my mobile application that uses a Facebook / Twitter / Google account to register. Now I want to get a list of friends corresponding to a separate account that use the same application.

Well, where is my problem starting, will I have to pull out a request each time or will I have to manage the table for this purpose or is there some other best practice.

Any help / guidance will be assigned

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Once you create the application through the facebook application, you can use FQL to get names based on your application identifiers

Sort of

SELECT uid, name FROM user WHERE is_app_user AND uid IN (SELECT uid2 FROM friend WHERE uid1 = me ()) ";

You mainly use the facebook API to make a request to facebook that returns a JSONArray, you can parse the array to get a list of users.

Here is a very similar question Friends Facebook APIs that use the same Android application

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I am familiar with the Facebook API. Take a look at http://developers.facebook.com . First, you need to request the user access to your friends list. After that, you can request an open graph to get a list of friends. Take a look at the permissions documentation to learn how to request permissions and what permissions you need to request.

You can create a cache and save it locally. However, this data will be changed. If you create cache on your own system, make sure that it is regularly invalid and updated. I retrieve the data every time I need it and cache it for immediate use only.

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