Craeg K Strong wrote:
> I hate it when I surf to a less-highly-used portion of a website and
> have to wait 30 seconds for the page to render.  

Sure, we all do.

> One possibility is to add the ability to *declare* dependencies.
> Such an object could have an explicit listing of the objects on
> which it depends, and invalidate the cache appropriately whenever
> any of the dependent objects changed.

Unfortunately enumerating the dependencies of a document won't help
with the aforementioned first-time-rendering delay.  Prefetching can,
not that I'm advocating it, I offer that only as an observation.

That said I don't think a dependancy based caching strategy is a bad
idea.  It could obviate the need for time-based cache expiration in
some circumstances.  In the long run, it all depends on your usage
patterns as to whether it would pay off or not.

Jamie Heilman         
"Most people wouldn't know music if it came up and bit them on the ass."
                                                        -Frank Zappa

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