Share Keys on Multiple Apps on Azure

Question

We're facing a problem is that we want to install the same ASP.Net Core WebApp in multiple locations and route users using traffic managers but if we do that, we get issues because the authentication tokens get stored in one server and the user may access another one. I read that we can use Azure BlobStorage to share the keys, can someone please describe how?

We use openiddict for API login but I think that this doesn't affect the issue if we can use Azure BlobStorage for key storage.

Thank you

Answer 1

As indicated in the documentation, you must reference the Microsoft.AspNetCore.DataProtection.AzureStorage package and use PersistKeysToAzureBlobStorage() to register the Azure Blob Storage key repository:

public void ConfigureServices(IServiceCollection services)
{
    services.AddDataProtection()
        .PersistKeysToAzureBlobStorage(new Uri("<blob URI including SAS token>"));
}