How to use DB instead of memory for adding users?

[senzacionale]

Is it possible to use DB instead of memory for adding users? I am currently already using DB for IdentityServer but I would like to extend it with your library for external provider and use same DB to add users. But currenty users with your library are added only in memory.

[MortenL]

Creating your own implementation of the IExternalUserStore interface doesn't take long. You'll need to add at least two columns to your user table (ExternalId and provider).