H. G. Muller wrote on Mon, Jun 22, 2020 06:29 AM UTC:
I am not sure it makes sense to do this; it will probably only increase server load, because the JavaScript would fetch the results from the new.php script every time to see what is new. And this will not be cached because it contains a query string (and caching would defeat the purpose in the first place). Almost always it will do this in vain, as the piece images will almost never be updated.
If I just suffix the URLs of the piece images with a fixed query string, they would never be fetched except the first time, (which is unavoidable in any case), as the browser would have cached them. Users would normally not see updates of them, unless they refresh their own browser cache. But that is usual browser behavior; it should not surprise anyone, and it is under their own control.
I am not sure it makes sense to do this; it will probably only increase server load, because the JavaScript would fetch the results from the new.php script every time to see what is new. And this will not be cached because it contains a query string (and caching would defeat the purpose in the first place). Almost always it will do this in vain, as the piece images will almost never be updated.
If I just suffix the URLs of the piece images with a fixed query string, they would never be fetched except the first time, (which is unavoidable in any case), as the browser would have cached them. Users would normally not see updates of them, unless they refresh their own browser cache. But that is usual browser behavior; it should not surprise anyone, and it is under their own control.