avoid force-refresh to backend

[Lars Erik Dangvard Jensen]

Hello list,

We have a customer still using Varnish 1.1.2, and they experience slow 
backends caused by a force-refresh every 5 minute, which is the TTL set 
by the backend itself.

Now actually the backend caches a page itself, and this cache is always 
up to date. But when Varnish refreshes its own cache, it makes a force 
refresh to the backend causing the backend to regenerate a page from 
scratch using a lot of database-queries each time.

Can we avoid Varnish 1.1.2 making a "force-refresh" and instead 
request/cache the backend with a normal page visit?

Thanks.

Lars