Broadening the scope of the negative connection cache

[Gerald (Jerry) Carter]

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Marc,

> I've encountered some minor performance in Samba that come 
> up when a PDC is down.  Briefly, the ability of the negative
> connection cache to limit the time wasted attempting to
> contact that PDC is limited by the fact that it's implemented
> as a linked list and limited in scope to the process
> where the failed connection was performed.
> 
> The obvious solution would be to migrate the negative 
> connection cache to be stored in a different way, probably
> as a TDB file.  This would allow every child process to share
> the failure information.

I believe the easiest way to achieve this is simply to
use the gencache API and set a 60 second TTL on entries.




cheers, jerry
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