Re: Question about (negative) caching

["Eric S. Johansson" <esj@harvee.billerica.ma.us>]

At 02:58 PM 6/7/1999 -0700, Gordon Good wrote:
> That approach would only work when the LDAP client attempts to read a single
> entry. In the event that the client performs a search that could potentially
> return a number of entries, the slave would always need to just pass the query
> on to the master, since it has no idea if it contains all the entries 
> needed to
> satisfy the client's search request.


I see what you mean.  If a request contained a wild-card then you could 
never know if you found "all" of the entries.  Your observation that raises 
the interesting question: how often are wildcard queries used vs. 
non-wild-card queries?  Almost all of the applications I'm working with use 
non-wild-card queries.  The ones with high-volume are definitely single 
entry queries (i.e. radius) and the low-volume ones are wild-card (customer 
support tools).

As I think about it, it probably isn't worth the effort except in the case 
of bringing up a new server.  There are probably other ways of solving that 
problem.

--- eric