[Zope] Idea of Caching DTML Methods in Zope

[Jaroslav Lukesh]

Hi all,

I have idea about another caching method in Zope. I am very sorry if it
exist, but I dont know that.

If I have for example very expensive or manytimes called method, I cannot
cache it via RAM cache manager, because it gives the same output regardless
place from where are calling.

For example, two methods:

siteroot
<dtml-var BASE1>/

localroot
<dtml-in "PARENTS[3:]">../</dtml-in>

(3 because I use virtual servers as zoperoot/www/domain )

So siteroot can be cached via RAM cache manager without no problems,
because constructing URLs are

	<dtml-var siteroot>images/imege.gif
output will
	http://www.domain.com/images/imege.gif

But localroot could not be cached, because i receive bad locations:

	<dtml-var localroot>images/imege.gif
output will
	../../images/imege.gif

If localroot are cached, then output of that will be same regardless of
calling directory, it is computed from first access.

So it is possible to do "dynamic" caching? What I mean, is store all
localroot objects in context of calling direcotry (or another object).

I have few hundreds of calling localroot per page and I will be hapy if it
will have some solution for that. I dont want migrate to siteroot because
it makes absolute URLs, not relative.

I know, I could use squid and Accelerated cache manager as reverse cache
for caching whole pages, but it is not wanted solution (because you cannot
see immediatelly changes to pages).

Many thanks for tips or implementation ;-)

Regards J. Lukesh