caching the sql queries

[Syver Enstad]

Gerhard Häring <gh at ghaering.de> writes:

> In my opinion, this sort of caching should really be done in the
> application layer, not in the database access layer.

I didn't know that PHP programmers used layers at all :-) 

On a more serious note, Why do you think caching should be
implemented in the application layer (is this the same as the
domain/business layer) rather than the database access layer?