Ryzom API

Hello,

For the item icon, the server cache is forever since the icon for a specific "c q s sap" will never change.

We'll add your code to setup the header cache and tell you when it's done so you'll be able to tell us if it's better :)

Thanks for the test.

I do not know about the quality of my code. I test it only with FF and I know each navigator use the headers differently. For example, you can see here the differences between FF and IE

I will do a little more advanced research and give you you a shout.

Hello,

I have tested with IE7, FF3.0 and Chrome. The following code seems to work :

if (    isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) 
    && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime( $_SERVER['SCRIPT_FILENAME'] )
) {
    Header("HTTP/1.0 304 Not Modified");
}
else {
    // build the pictures
    echo ryzom_item_icon($sheetid, $c, $q, $s, $sap, $destroyed);

    // build the header
    $mtime = gmdate('D, d M Y H:i:s \G\M\T', filemtime( $_SERVER['SCRIPT_FILENAME'] ));
    $mtime2 = gmdate('D, d M Y H:i:s \G\M\T', time() + 3600);

    header('Content-type: image/png');
    header("Cache-Control: max-age=3600");
    header("Expires: ". $mtime2);
    header("Last-Modified: " . $mtime );
    header("Pragma: cache");
}

1. when you change/recharge the DOM HTML, FF uses its owns cache as long as it does not reach the cache duration given by the server,
2. when you reload the page (F5), FF asks if the page has changed,
3. when you come back to the page, FF uses its cache or asks, it depends on the cache duration given by the server.

With other browsers, the behaviour seems similar.

So, the browser have less things to ask and to do, and the server as well.

In this example the cache duration is one hour, but maybe you can put more.

Aeness

Thanks for the code.

I adapted it and it's live.

http://atys.ryzom.com/api/item_icon.php?sheetid=icmm2ms_3.sitem&c=-1&q=100&s=1&sap=-1

The strange things is that even with that, when I press F5, it still generate a request so it takes 100ms+ to have the 304 answer. I don't understand why firefox 3.5 doesn't use the version it has locally.

I setup 10 hours for the cache timeout and use the real date of the icon file and not the date of the script.

After a few tries this seems to work.

When you press F5, firefox generates a conditional request but anyway that wast of resources, I agree and I do not know why.

Thanks