Re: Cache invalidation after authentication (on-the-fly role creation)

Hi,

On 2018-07-03 19:44:21 -0400, Alvaro Herrera wrote:
> On 2018-Jul-04, Thomas Munro wrote:
> 
> > Hello hackers,
> > 
> > I'd like to do this to postinit.c:
> > 
> >                 PerformAuthentication(MyProcPort);
> > +               AcceptInvalidationMessages();
> >                 InitializeSessionUserId(username, useroid);
> > 
> > Any objections?
> 
> Is there a measurable performance overhead to this change?

I can't see it being relevant here. We accept inval message in plenty
other places, and in comparison to session startup it should be just
about inmeasurable.

Greetings,

Andres Freund