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	<title>Random Musings of an Insane Mind &#187; Scalability</title>
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	<link>http://cd34.com/blog</link>
	<description>This is my blog, there are many others like it but this one is mine.</description>
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		<title>node.js 7-day Retrospective</title>
		<link>http://cd34.com/blog/scalability/node-js-7-day-retrospective/</link>
		<comments>http://cd34.com/blog/scalability/node-js-7-day-retrospective/#comments</comments>
		<pubDate>Thu, 19 Jan 2012 07:27:43 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[ajax push]]></category>
		<category><![CDATA[node.js]]></category>
		<category><![CDATA[socket.io]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1346</guid>
		<description><![CDATA[A week ago I was walking the dog and thinking about how to handle a validation routine and I got sidetracked and thought about a different problem I had a few weeks earlier. I&#8217;ve been working with Ajax Push for a few things to test some parts of a larger concept. I&#8217;m a big advocate [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/node-js-7-day-retrospective/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>The Architecture of a New Project</title>
		<link>http://cd34.com/blog/scalability/the-architecture-of-a-new-project/</link>
		<comments>http://cd34.com/blog/scalability/the-architecture-of-a-new-project/#comments</comments>
		<pubDate>Thu, 12 Jan 2012 01:56:18 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[ajax]]></category>
		<category><![CDATA[ape]]></category>
		<category><![CDATA[couchdb]]></category>
		<category><![CDATA[node.js]]></category>
		<category><![CDATA[push]]></category>
		<category><![CDATA[redis]]></category>
		<category><![CDATA[socket.io]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1341</guid>
		<description><![CDATA[Yesterday I started working with Ajax Push, wrote a quick demo for a friend, and then stripped that and wrote a functional demo project with documentation. I did this to test if Ajax Push worked well enough for another concept project. As it turns out, using APE does work, but, it leaves a little to [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/the-architecture-of-a-new-project/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>XFS Filesystem Benchmarking thoughts due to real world situation</title>
		<link>http://cd34.com/blog/scalability/xfs-filesystem-benchmarking-thoughts-due-to-real-world-situation/</link>
		<comments>http://cd34.com/blog/scalability/xfs-filesystem-benchmarking-thoughts-due-to-real-world-situation/#comments</comments>
		<pubDate>Tue, 15 Nov 2011 17:49:35 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[xfs]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1275</guid>
		<description><![CDATA[I suspect I&#8217;m going to learn something about XFS today that is going to create a ton of work. Writing a benchmark test (in bash) that uses bonnie++ to benchmark along with two other real world scenarios. I&#8217;ve thought a lot about how to replicate some real-world testing, but, benchmarks usually stress a worst case [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/xfs-filesystem-benchmarking-thoughts-due-to-real-world-situation/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>GFS2 Kernel Oops</title>
		<link>http://cd34.com/blog/scalability/gfs2-kernel-oops/</link>
		<comments>http://cd34.com/blog/scalability/gfs2-kernel-oops/#comments</comments>
		<pubDate>Sun, 30 Oct 2011 11:27:30 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[drbd]]></category>
		<category><![CDATA[gfs2]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1256</guid>
		<description><![CDATA[For a few years I&#8217;ve run a system using DRBD replication between two machines with GFS2 running in dual primary mode to test a theory on a particular type of web hosting I&#8217;ve been developing. For months the system will run fine, then, out of the blue, one of the nodes will drop from the [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/gfs2-kernel-oops/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>WordPress, Varnish and ESI Plugin</title>
		<link>http://cd34.com/blog/scalability/wordpress-varnish-and-esi-plugin/</link>
		<comments>http://cd34.com/blog/scalability/wordpress-varnish-and-esi-plugin/#comments</comments>
		<pubDate>Mon, 06 Jun 2011 02:28:16 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[esi]]></category>
		<category><![CDATA[Varnish]]></category>
		<category><![CDATA[wordpress]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1177</guid>
		<description><![CDATA[This post is a version of the slideshow presentation I did at Hack and Tell in Fort Lauderdale, Florida at The Whitetable Foundation on Saturday, June 4, 2011. Briefly, I created a Plugin that enabled Fragment Caching with WordPress and Varnish. The problem we ran into with normal page caching methods was related to the [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/wordpress-varnish-and-esi-plugin/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Apache mod_rewrite Performance issue discussion and fix</title>
		<link>http://cd34.com/blog/scalability/apache-mod_rewrite-performance-issue-discussion-and-fix/</link>
		<comments>http://cd34.com/blog/scalability/apache-mod_rewrite-performance-issue-discussion-and-fix/#comments</comments>
		<pubDate>Mon, 16 May 2011 20:40:04 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[apache2]]></category>
		<category><![CDATA[mod_rewrite]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1171</guid>
		<description><![CDATA[This weekend I was with a client that was having some issues unrelated to this issue, but, it raised an interesting point. Apache&#8217;s handlers have a load order dependent on the modules installed and there are certain modules that slow down apache enough that you want to avoid them on production servers &#8211; mod_status being [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/apache-mod_rewrite-performance-issue-discussion-and-fix/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Reverse Engineering Youtube Statistics Generation Algorithm</title>
		<link>http://cd34.com/blog/scalability/reverse-engineering-youtube-statistics-generation-algorithm/</link>
		<comments>http://cd34.com/blog/scalability/reverse-engineering-youtube-statistics-generation-algorithm/#comments</comments>
		<pubDate>Sat, 27 Nov 2010 21:35:06 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[google]]></category>
		<category><![CDATA[scalability]]></category>
		<category><![CDATA[youtube]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1073</guid>
		<description><![CDATA[While surfing Youtube a while back, I noticed that you could view the statistics for a given video. While most of the videos I view are quite boring and have low viewcounts, I thought that might be the trigger &#8212; Only popular videos have stats. However, while surfing Youtube today to see how they handled [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/reverse-engineering-youtube-statistics-generation-algorithm/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Using Redis (or Memcached) as a buffer for SQL resulting in near-realtime stats</title>
		<link>http://cd34.com/blog/scalability/using-redis-or-memcached-as-a-buffer-for-sql-resulting-in-near-realtime-stats/</link>
		<comments>http://cd34.com/blog/scalability/using-redis-or-memcached-as-a-buffer-for-sql-resulting-in-near-realtime-stats/#comments</comments>
		<pubDate>Sat, 23 Oct 2010 20:06:28 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[memcached]]></category>
		<category><![CDATA[redis]]></category>
		<category><![CDATA[sql]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=1009</guid>
		<description><![CDATA[While I&#8217;ve used memcached for a number of things where MySQL&#8217;s query cache just isn&#8217;t quick enough, the nature of a key-value store without unions didn&#8217;t work for this particular project. While it would have been easy enough to run memcached alongside Redis, two software stacks to solve the same problem wasn&#8217;t appealing. What I&#8217;ve [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/using-redis-or-memcached-as-a-buffer-for-sql-resulting-in-near-realtime-stats/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>WordPress Cache Plugin Benchmarks</title>
		<link>http://cd34.com/blog/scalability/wordpress-cache-plugin-benchmarks/</link>
		<comments>http://cd34.com/blog/scalability/wordpress-cache-plugin-benchmarks/#comments</comments>
		<pubDate>Thu, 04 Mar 2010 15:55:03 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[performance]]></category>
		<category><![CDATA[Varnish]]></category>
		<category><![CDATA[wordpress]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=900</guid>
		<description><![CDATA[A lot of time and effort goes into keeping a WordPress site alive when it starts to accumulate traffic. While not every site has the same goals, keeping a site responsive and online is the number one priority. When a surfer requests the page, it should load quickly and be responsive. Each addon handles caching [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/wordpress-cache-plugin-benchmarks/feed/</wfw:commentRss>
		<slash:comments>25</slash:comments>
		</item>
		<item>
		<title>Converting to a Varnish CDN with WordPress</title>
		<link>http://cd34.com/blog/scalability/converting-to-a-varnish-cdn-with-wordpress/</link>
		<comments>http://cd34.com/blog/scalability/converting-to-a-varnish-cdn-with-wordpress/#comments</comments>
		<pubDate>Sun, 11 Oct 2009 18:57:49 +0000</pubDate>
		<dc:creator>cd34</dc:creator>
				<category><![CDATA[Scalability]]></category>
		<category><![CDATA[cdn]]></category>
		<category><![CDATA[Varnish]]></category>
		<category><![CDATA[website performance]]></category>

		<guid isPermaLink="false">http://cd34.com/blog/?p=813</guid>
		<description><![CDATA[While working with Varnish I decided to try an experiment. I knew that Varnish could assist sites, but, it has never been easy to run Varnish on a shared virtual or clustered virtual host. VPS or Dedicated servers are no problem because you can do some configuration. However, in this case, I wanted to see [...]]]></description>
		<wfw:commentRss>http://cd34.com/blog/scalability/converting-to-a-varnish-cdn-with-wordpress/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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