cache empties itself?

[Ricardo Newbery]

On Apr 8, 2008, at 8:26 AM, DHF wrote:

> Ricardo Newbery wrote:
>> Regarding the potential management overhead... this is not relevant  
>> to the question of whether this strategy would increase your site's  
>> performance.  Management overhead is a separate question, and not  
>> an easy one to answer in the general case.  The overhead might be a  
>> problem for some.  But I know in my own case, the overhead required  
>> to manage this sort of thing is actually pretty trivial.
> How do you manage the split ttl's?  Do you send a purge after a page  
> has changed or have you crafted another way to force a revalidation  
> of cached objects?


Yes, a purge is sent after the page has changed.  For Plone, all of  
this is easy to automate with the CacheFu add-on.  Although support  
for adding a Surrogate-Control header (or whatever you use to  
communicate the local ttl) requires some minor customization (about 5  
lines of code).

Ric