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	<title>The Daily Llama &#187; HTTP</title>
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	<description>The ramblings on of a cat loving programmer</description>
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		<title>VKitty speed upgrades, Gears removal</title>
		<link>http://llamaslayers.net/daily-llama/986/vkitty-speed-upgrades-gears-removal</link>
		<comments>http://llamaslayers.net/daily-llama/986/vkitty-speed-upgrades-gears-removal#comments</comments>
		<pubDate>Fri, 05 Jun 2009 17:30:33 +0000</pubDate>
		<dc:creator>Ben L.</dc:creator>
				<category><![CDATA[VKitty]]></category>
		<category><![CDATA[Google Gears]]></category>
		<category><![CDATA[hostnames]]></category>
		<category><![CDATA[HTTP]]></category>
		<category><![CDATA[VKitty updates]]></category>

		<guid isPermaLink="false">http://llamaslayers.net/daily-llama/?p=986</guid>
		<description><![CDATA[Warning: This article is very techy and may cause unwanted implosion of your brain if you don&#8217;t know what caching and HTTP requests are. Don&#8217;t say I didn&#8217;t warn you. For browsers that support Google Gears, VKitty had always requested &#8230; <a href="http://llamaslayers.net/daily-llama/986/vkitty-speed-upgrades-gears-removal">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
			<content:encoded><![CDATA[<p><em><strong>Warning:</strong> This article is very techy and may cause unwanted implosion of your brain if you don&#8217;t know what caching and HTTP requests are. Don&#8217;t say I didn&#8217;t warn you.</em></p>
<p>For browsers that support Google Gears, VKitty had always requested permission to store data on the user&#8217;s computer. This has been removed. Although it might cause VKitty to be a bit slower, we&#8217;ll scare less people away by asking about data storage.</p>
<p>Most browsers download a capped amount of files from each server at a time. This means that only two VKitty images (affiliate badges, items, etc.) would be downloaded by the browser at a time.</p>
<p>To help VKitty load faster, item images have been split up into 10 different subdomains, and affiliate badges and style data each have their own subdomains.</p>
<p>All affiliate badges go on aff.vkitty.net, stylesheets and scripts go on s.vkitty.net, and item images (unequipped only so far) go on datiX.vkitty.net, where X is the last digit of the item ID.</p>
<p>For a quick demonstration of how much this helps, imagine you&#8217;re on the homepage of VKitty and you have twenty different items in your inventory and one cat. Let&#8217;s say your browser can only download 2 files per hostname at a time and each file takes one second to download.</p>
<p>On the homepage in this scenario, there would be two stylesheets, a script, 7 affiliate badges, a cat image, and 20 item images, a total of 31 things for your browser to download once it has the HTML of the page.</p>
<p>With a single hostname, it would take 17 seconds to load the page, including the HTML content. With our new system, it would only take 3 seconds to load everything except the affiliate badges and 6 seconds total.</p>
<p>A savings of 11-14 seconds is pretty big. Of course, each file on VKitty hopefully loads in under a second, so the savings will be smaller, but still 18-35% of the total time to load the page, assuming all of the files loaded in the same amount of time.</p>
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