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	<title>Comments on: What is scalability ?</title>
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	<description>Building reliable, high performance, highly available clusters</description>
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		<title>By: Ultimate Scalability 1: What is Scalability &#171; Distributed World</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-104</link>
		<dc:creator>Ultimate Scalability 1: What is Scalability &#171; Distributed World</dc:creator>
		<pubDate>Fri, 15 May 2009 23:32:58 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-104</guid>
		<description>[...] or implementing High Availability. Royans K Tharakan, in attempting to answer the question &#8220;What is scalability?&#8221;, says: Scalability, simply, is about doing what you do in a bigger way. Scaling a web [...]</description>
		<content:encoded><![CDATA[<p>[...] or implementing High Availability. Royans K Tharakan, in attempting to answer the question &#8220;What is scalability?&#8221;, says: Scalability, simply, is about doing what you do in a bigger way. Scaling a web [...]</p>
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	<item>
		<title>By: Art of scalability (1) - Scalability principles &#124; Haytham El-Fadeel</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-102</link>
		<dc:creator>Art of scalability (1) - Scalability principles &#124; Haytham El-Fadeel</dc:creator>
		<pubDate>Sat, 04 Apr 2009 14:28:52 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-102</guid>
		<description>[...] the system. However, adding resources incurs additional overhead, making it difficult to achieve. Royans K Tharakan refers to this as a “scalability factor”, and uses it to enumerate types of [...]</description>
		<content:encoded><![CDATA[<p>[...] the system. However, adding resources incurs additional overhead, making it difficult to achieve. Royans K Tharakan refers to this as a “scalability factor”, and uses it to enumerate types of [...]</p>
]]></content:encoded>
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		<title>By: Sandeep patil</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-69</link>
		<dc:creator>Sandeep patil</dc:creator>
		<pubDate>Fri, 15 Feb 2008 06:13:31 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-69</guid>
		<description>This is a best article that gives me lots of knowledge about scalability</description>
		<content:encoded><![CDATA[<p>This is a best article that gives me lots of knowledge about scalability</p>
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	</item>
	<item>
		<title>By: links for 2007-10-04 &#171; Jack The Programmer</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-70</link>
		<dc:creator>links for 2007-10-04 &#171; Jack The Programmer</dc:creator>
		<pubDate>Thu, 04 Oct 2007 04:19:27 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-70</guid>
		<description>[...] Scalable web architectures Â» Blog Archive Â» What is scalability ? (tags: scalability performance) [...]</description>
		<content:encoded><![CDATA[<p>[...] Scalable web architectures Â» Blog Archive Â» What is scalability ? (tags: scalability performance) [...]</p>
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	<item>
		<title>By: Cameron Purdy</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-71</link>
		<dc:creator>Cameron Purdy</dc:creator>
		<pubDate>Wed, 03 Oct 2007 15:56:41 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-71</guid>
		<description>Thanks for referencing my blog entry :) .. this is a topic that I&#039;ve been dealing with since we released our Tangosol Coherence software in 2001 (now &lt;a href=&quot;http://www.oracle.com/technology/products/coherence/index.html&quot; rel=&quot;nofollow&quot;&gt;Oracle Coherence Data Grid&lt;/a&gt;).

I just wanted to comment on one thing you said: &quot;For a successful scalable web application, all layers have to scale in equally.&quot;

My comment is this: Solving scalability problems is often a process of working around the scalability limits of the parts of the infrastructure that do NOT scale equally. In other words, in the real world, one does not have the ability to choose all of the components, applications, system infrastructure, etc. within an organization, because 99% of it is already there and 50% cannot be replaced even within a ten year window. However, the businesses require applications that can both scale and interoperate with these systems.

Peace,

Cameron.</description>
		<content:encoded><![CDATA[<p>Thanks for referencing my blog entry <img src='http://www.royans.net/arch/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  .. this is a topic that I&#8217;ve been dealing with since we released our Tangosol Coherence software in 2001 (now <a href="http://www.oracle.com/technology/products/coherence/index.html" rel="nofollow">Oracle Coherence Data Grid</a>).</p>
<p>I just wanted to comment on one thing you said: &#8220;For a successful scalable web application, all layers have to scale in equally.&#8221;</p>
<p>My comment is this: Solving scalability problems is often a process of working around the scalability limits of the parts of the infrastructure that do NOT scale equally. In other words, in the real world, one does not have the ability to choose all of the components, applications, system infrastructure, etc. within an organization, because 99% of it is already there and 50% cannot be replaced even within a ten year window. However, the businesses require applications that can both scale and interoperate with these systems.</p>
<p>Peace,</p>
<p>Cameron.</p>
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		<title>By: Technology Talk from September 24th 2007 to September 25th 2007 &#187; Chandrasekhar Vallabhaneni</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-72</link>
		<dc:creator>Technology Talk from September 24th 2007 to September 25th 2007 &#187; Chandrasekhar Vallabhaneni</dc:creator>
		<pubDate>Wed, 26 Sep 2007 00:27:09 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-72</guid>
		<description>[...] What is scalability ? - Scalability, simply, is about doing what you do in a bigger way. Scaling a web application is all about allowing more people to use your application. If you can?t figure out how to improve performance while scaling out, its okay. And as long as you can [...]</description>
		<content:encoded><![CDATA[<p>[...] What is scalability ? &#8211; Scalability, simply, is about doing what you do in a bigger way. Scaling a web application is all about allowing more people to use your application. If you can?t figure out how to improve performance while scaling out, its okay. And as long as you can [...]</p>
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	<item>
		<title>By: Jeryl Cook</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-76</link>
		<dc:creator>Jeryl Cook</dc:creator>
		<pubDate>Mon, 24 Sep 2007 13:28:56 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-76</guid>
		<description>Terrocotta allows to scale so easy a caveman can do it.</description>
		<content:encoded><![CDATA[<p>Terrocotta allows to scale so easy a caveman can do it.</p>
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		<title>By: Memcached: When You Absolutely Positively Have to Get It To Scale the Next Day &#171; SmoothSpan Blog</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-78</link>
		<dc:creator>Memcached: When You Absolutely Positively Have to Get It To Scale the Next Day &#171; SmoothSpan Blog</dc:creator>
		<pubDate>Sun, 23 Sep 2007 21:23:09 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-78</guid>
		<description>[...] database (seems to be the problem so much of the time, doesn&#8217;t it?), and the architecture is inherently not scalable.Â  Translation:Â  they want a lot of time to make things faster, time you don&#8217;t have.Â  What [...]</description>
		<content:encoded><![CDATA[<p>[...] database (seems to be the problem so much of the time, doesn&#8217;t it?), and the architecture is inherently not scalable.Â  Translation:Â  they want a lot of time to make things faster, time you don&#8217;t have.Â  What [...]</p>
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	<item>
		<title>By: Alit Bar-Sadeh</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-75</link>
		<dc:creator>Alit Bar-Sadeh</dc:creator>
		<pubDate>Sun, 23 Sep 2007 11:43:50 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-75</guid>
		<description>Just realized that the white paper link from my previous post requires registration, so sorry and here is a link that does not require any registration :) http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1</description>
		<content:encoded><![CDATA[<p>Just realized that the white paper link from my previous post requires registration, so sorry and here is a link that does not require any registration <img src='http://www.royans.net/arch/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  <a href="http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1" rel="nofollow">http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1</a></p>
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	<item>
		<title>By: Alit Bar-Sadeh</title>
		<link>http://www.royans.net/arch/what-is-scalability/comment-page-1/#comment-74</link>
		<dc:creator>Alit Bar-Sadeh</dc:creator>
		<pubDate>Sun, 23 Sep 2007 11:40:37 +0000</pubDate>
		<guid isPermaLink="false">http://www.royans.net/arch/2007/09/22/what-is-scalability/#comment-74</guid>
		<description>Hi Again, I just realized that the link to the white paper requires registration, so sorry and here is a link that does NOT require registration :) http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1</description>
		<content:encoded><![CDATA[<p>Hi Again, I just realized that the link to the white paper requires registration, so sorry and here is a link that does NOT require registration <img src='http://www.royans.net/arch/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' />  <a href="http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1" rel="nofollow">http://www.gigaspaces.com/wiki/download/attachments/19202284/FromDeadEndToOpenRoad.pdf?version=1</a></p>
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