cache user authentication

Hello,
I use an nginx server with kerberos in front of another webserver as authentication proxy.
But when I do so, the page loads very slow and sometimes is even incomplete (probably due to timeouts)
When I disable gss in the nginx config, everything runs smooth.
So my idea is to cache the authentication
For apache I found socache: https://httpd.apache.org/docs/trunk/howto/auth.html#socache which cares about this.
Is there something similar to nginx?

Best regards,
Peter