Re: pcache overlay, caching DNs

[Howard Chu <hyc@symas.com>]

Roel van Meer wrote:
> Hi list!
>
> I've been figuring out how to get the pcache overlay to work, but I'm stuck 
> with one thing: caching of DNs.
>
> Take this example config:
>
>   overlay pcache
>   pcache bdb 10000 2 500 100
>   directory /var/lib/ldap/cache
>
>   pcacheAttrset 0 *
>   pcacheAttrset 1 uid
>
>   pcacheTemplate (uid=) 0 300
>   pcacheTemplate (uid=) 1 300
>
> This works for queries like:
>
>   ldapsearch "uid=foo" '*'
>
> or
>
>   ldapsearch "uid=foo" 'uid'
>
> but NOT for:
>
>   ldapsearch "uid=foo" 'dn'
>
> Can anyone tell me if it is at all possible to use pcache for caching DNs?
>
>
> Things I have tried so far:
>
> - adding 'dn' as a pcacheAttrset, but then slapd fails to start
>   with the error "line 63: attribute type undefined".

That should have told you already, you're barking up the wrong tree. DN is not 
an attribute.

> - adding 'distinguishedName' as a pcacheAttrset, and then the
>   result is cached when I request the distinguishedName
>   attribute, but not when the dn is requested.
>
> I've tried openldap 2.4.40 and 2.4.44 (specifically, the version from Debian 
> jessie and the version from jessie-backports).
>
> Thanks a lot,
>
> Roel


--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/