I’m creating an index in my DB for the Auth0 user_id: {identityProviderId}|{UserIdFromIdentityProvider} I’m using Facebook, Instagram, and Google as providers. 256 should be long enough, right?

If a facebook user_id is 26 characters long, I can’t imagine that any other provider will be much longer than that. So I’m guessing 64 or 128 will probably always be enough. I’ll assume that for now.

Is 256 a safe max length for a user_id?

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Is 256 a safe max length for a user_id?

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