Quote Originally Posted by bplex
That's true to a point. The problem with tube sites is that you typically have a lot of image turn over (meaning images are constantly moving from one page to another page). Every time the page changes, the browser must revalidate that the image is the same image. Depending on the image size, this can take a bit of time. Because of the constant image shuffle, turning on x-cache will not save you anything in terms of load (it may save you a bit of bandwidth). The reason key here for tube sites is to optimize the images altogether. This way, the overall page size decreases and can remain in the browser cache as a whole longer.
So, the image is not cached based on his url + Image expiration tag? is cached based from which page is loaded???

And / or each time the page/html change the browser re-validate the image without care about the Image expiration tag?

To me seems a little "stupid"... :oops:

I mean, if the image day 1 is loaded from index.php and day 2 from otherpage.php is still the same image...
Why to check again if is the same url/name and the Image expiration tag is set to 1 month???

Like this the "Image expiration tag" will be useful only in very very few cases :(

Or i understood bad (my English is not the best) :oops: :P

anyway, my vshare site don't allow user to register, and myself are the only user who upload the movie, 2-3 time at week... sometimes less (1 time at week or more) sometimes more often (1 time at day / 2 days)...

So, my vshare don't change as much change a vshare with a lot of user uploading new movies each some hours.

In my case can be still useful also for server load, use this "Image expiration tag" function? i guess yes, also because i have 8 page views/user so many user load many times same pages in 10-20 minuts of permanence in my site.

Or i mistake?