Re: When to make objects uncacheable ?

> That's what I'm seeing as well.  The best I could hope for would be
> 37% of the URLs, which would account for 48% of the data.  And this
> assumes that none of the pages have expired (which I can't easily
> see from the logs) within the week.
>
> What I did notice that as the number of logs analyzed increase, the
> potential hit rates did get better.  When I looked at one day, I
> calculated that I should only be able to get a 28% hit rate(URLs).
> With two days data in cache, I should be able to get a 33% hit
> rate.  One week - 37%.
>
> The relationship is not linear with respect to time, and I expect
> to see diminishing returns, but I imagine that if the cache is
> large enough to store all accesses for a month, the hit rate would
> increase even higher.  I could try to analyze a month's worth of

Of course, it depends on how long you set your TTLs and how long ago
the modified times are.  I suspect that with longer TTLs you'll see
more IMS and REFRESH requests (due to users hitting the reload
button), which is actually not a bad thing since you're still saving
bandwidth over a clean MISS.

...tai