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	<title>Running with Rails - Dev Blog not only for Rails fanatics</title>
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	<link>http://dev.mensfeld.pl</link>
	<description>Mostly Ruby on Rails - but not only! Also so Python, PHP and Linux admin stuff</description>
	<lastBuildDate>Sat, 04 Feb 2012 14:34:43 +0000</lastBuildDate>
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		<title>Simplifying iptables management on a Debian (Squeeze) server</title>
		<link>http://dev.mensfeld.pl/2012/02/simplifying-iptables-management-on-a-debian-squeeze-server/</link>
		<comments>http://dev.mensfeld.pl/2012/02/simplifying-iptables-management-on-a-debian-squeeze-server/#comments</comments>
		<pubDate>Sat, 04 Feb 2012 14:34:43 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Hosting]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Debian]]></category>
		<category><![CDATA[firewall]]></category>
		<category><![CDATA[iptables]]></category>
		<category><![CDATA[nmap]]></category>
		<category><![CDATA[ports]]></category>
		<category><![CDATA[server]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1846</guid>
		<description><![CDATA[My basic management concept for iptables (easy to maintain when you&#8217;re the owner and administrator of a server). I don&#8217;t like native iptables management way, so with little help from Google I&#8217;ve recently figured out an alternative way to handle rules loading and applying. Here&#8217;s how it&#8217;s done. First, create (as a su) iptables file [...]]]></description>
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		<title>Making Munin work with Mysql on Debian</title>
		<link>http://dev.mensfeld.pl/2012/02/making-munin-work-with-mysql-on-debian/</link>
		<comments>http://dev.mensfeld.pl/2012/02/making-munin-work-with-mysql-on-debian/#comments</comments>
		<pubDate>Fri, 03 Feb 2012 22:56:43 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Hosting]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Debian]]></category>
		<category><![CDATA[monitoring]]></category>
		<category><![CDATA[Munin]]></category>
		<category><![CDATA[Mysql]]></category>
		<category><![CDATA[Squeeze]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1826</guid>
		<description><![CDATA[Easier than I thought (all stuff as SU or using SUDO): First we need to install some Mysql-Munin perl libraries: Also some Perl stuff will be needed: Next let&#8217;s activate Munin Mysql plugin: Create a user for a Mysql database (so Munin will be able to get stats as this user): Edit /etc/munin/plugin-conf.d/munin-node file and [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Upgrading to Rails 3.2.0 from Rails 3.1.3</title>
		<link>http://dev.mensfeld.pl/2012/01/upgrading-to-rails-3-2-0-from-rails-3-1-3/</link>
		<comments>http://dev.mensfeld.pl/2012/01/upgrading-to-rails-3-2-0-from-rails-3-1-3/#comments</comments>
		<pubDate>Thu, 26 Jan 2012 22:15:26 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Rails]]></category>
		<category><![CDATA[Rails 3.1]]></category>
		<category><![CDATA[Rails 3.2]]></category>
		<category><![CDATA[Rails3]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Rails3.1]]></category>
		<category><![CDATA[Rails3.2]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby 1.9.2]]></category>
		<category><![CDATA[Ruby 1.9.3]]></category>
		<category><![CDATA[Ruby on Rails]]></category>
		<category><![CDATA[upgrade]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1806</guid>
		<description><![CDATA[Yup, finally it&#8217;s here! :) Switching Susanoo (Senpuu v5) to 3.2 wasn&#8217;t so hard. Took me about 5 hours. Why so long? Well because I had to fix my &#8220;special&#8221; Paperclip version and make so additional table names changes. All the steps are presented below. Enjoy. Gemfile Weird stuff I&#8217;ve got some problems with my [...]]]></description>
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		<title>Converting nested hash into HTTP url params hash version in Ruby</title>
		<link>http://dev.mensfeld.pl/2012/01/converting-nested-hash-into-http-url-params-hash-version-in-ruby/</link>
		<comments>http://dev.mensfeld.pl/2012/01/converting-nested-hash-into-http-url-params-hash-version-in-ruby/#comments</comments>
		<pubDate>Sat, 14 Jan 2012 19:00:52 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[conversion]]></category>
		<category><![CDATA[hash]]></category>
		<category><![CDATA[hashes]]></category>
		<category><![CDATA[Ruby 1.9.2]]></category>
		<category><![CDATA[Ruby 1.9.3]]></category>
		<category><![CDATA[url]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1799</guid>
		<description><![CDATA[We cannot send nested hash as a param in HTTP requests. For example, when we would like to send something like this: It would be (or should be) mapped like this: /url/?key=value&#038;nested=%7B%3Anest%3D%3E%5C%22value%5C%22%7D Doesn&#8217;t look to good ;) However there is a simple way to convert a nested hash into a params acceptable form. We can [...]]]></description>
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		<slash:comments>3</slash:comments>
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		<title>Using Ruby and Zip library to compress directories and read single file from compressed collection</title>
		<link>http://dev.mensfeld.pl/2011/12/using-ruby-and-zip-library-to-compress-directories-and-read-single-file-from-compressed-collection/</link>
		<comments>http://dev.mensfeld.pl/2011/12/using-ruby-and-zip-library-to-compress-directories-and-read-single-file-from-compressed-collection/#comments</comments>
		<pubDate>Sun, 18 Dec 2011 16:36:28 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Default]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[compress]]></category>
		<category><![CDATA[compression]]></category>
		<category><![CDATA[gzip]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby 1.9]]></category>
		<category><![CDATA[tutorial]]></category>
		<category><![CDATA[unzip]]></category>
		<category><![CDATA[zip]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1780</guid>
		<description><![CDATA[I have an application in which I store a lot of data in text files.Recently I&#8217;ve needed to compress this data into datasets and send it to a browser. I&#8217;ve also decided to remove uncompressed data and leave only zipped files. The mayor advantage is HDD consumption &#8211; 90% less space needed to store data! [...]]]></description>
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		<item>
		<title>My Ruby and Rails introduction for Erasmus students at Cracow University of Technology</title>
		<link>http://dev.mensfeld.pl/2011/12/my-ruby-and-rails-introduction-for-erasmus-students-at-cracow-university-of-technology/</link>
		<comments>http://dev.mensfeld.pl/2011/12/my-ruby-and-rails-introduction-for-erasmus-students-at-cracow-university-of-technology/#comments</comments>
		<pubDate>Thu, 08 Dec 2011 20:06:43 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Nauka]]></category>
		<category><![CDATA[Rails]]></category>
		<category><![CDATA[Rails 3.1]]></category>
		<category><![CDATA[Rails3]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1773</guid>
		<description><![CDATA[As I mentioned at the end of today&#8217;s lecture, I give you both, Ruby and Rails presentations: Ruby introduction Ruby on Rails introduction Below list of other quite interesting webpages about Ruby: Programming Ruby Try Ruby Ruby website Ruby in twenty minutes Ruby Basic tutorial Ruby Quick Reference Guide And some stuff about Ruby on [...]]]></description>
		<wfw:commentRss>http://dev.mensfeld.pl/2011/12/my-ruby-and-rails-introduction-for-erasmus-students-at-cracow-university-of-technology/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Easy way to extend and overwrite bb-ruby bbcode gem translations in Ruby on Rails</title>
		<link>http://dev.mensfeld.pl/2011/11/easy-way-to-extend-and-overwrite-bb-ruby-bbcode-gem-translations-in-ruby-on-rails/</link>
		<comments>http://dev.mensfeld.pl/2011/11/easy-way-to-extend-and-overwrite-bb-ruby-bbcode-gem-translations-in-ruby-on-rails/#comments</comments>
		<pubDate>Sat, 26 Nov 2011 12:39:34 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Rails]]></category>
		<category><![CDATA[Rails 3.1]]></category>
		<category><![CDATA[Rails3]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[bb-ruby]]></category>
		<category><![CDATA[bbcode]]></category>
		<category><![CDATA[gem]]></category>
		<category><![CDATA[gemset]]></category>
		<category><![CDATA[nofollow]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby 1.9.2]]></category>
		<category><![CDATA[Ruby on Rails]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1759</guid>
		<description><![CDATA[When you go to bb-ruby gem readme, there is an instruction how to extend it with your own translations: This method works quite good but well&#8230; it&#8217;s way to inconvenient. Where should we put our translation? In our model? Should we create a different model which would store our costume translations? Nah&#8230; There is really [...]]]></description>
		<wfw:commentRss>http://dev.mensfeld.pl/2011/11/easy-way-to-extend-and-overwrite-bb-ruby-bbcode-gem-translations-in-ruby-on-rails/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<item>
		<title>Using Redis as a temporary cache for data shared by multiple independent processes</title>
		<link>http://dev.mensfeld.pl/2011/11/using-redis-as-a-temporary-cache-for-data-shared-by-multiple-independent-processes/</link>
		<comments>http://dev.mensfeld.pl/2011/11/using-redis-as-a-temporary-cache-for-data-shared-by-multiple-independent-processes/#comments</comments>
		<pubDate>Thu, 17 Nov 2011 23:50:13 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[cache]]></category>
		<category><![CDATA[caching]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[open-uri]]></category>
		<category><![CDATA[redis]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby 1.9.2]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1719</guid>
		<description><![CDATA[There are times, when you need to share some data between multiple processes, one of the ways is to use Redis. Not so long ago I&#8217;ve been working with an application which performs some types of calculations based on a crawled websites. Crawler pulls URLs from a page and sends them to a RabbitMQ. Then [...]]]></description>
		<wfw:commentRss>http://dev.mensfeld.pl/2011/11/using-redis-as-a-temporary-cache-for-data-shared-by-multiple-independent-processes/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<item>
		<title>Ruby, Mongoid and (again) memory leaks – next Identity map problem</title>
		<link>http://dev.mensfeld.pl/2011/10/ruby-mongoid-and-again-memory-leaks-%e2%80%93-next-identity-map-problem/</link>
		<comments>http://dev.mensfeld.pl/2011/10/ruby-mongoid-and-again-memory-leaks-%e2%80%93-next-identity-map-problem/#comments</comments>
		<pubDate>Fri, 28 Oct 2011 19:29:42 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Hosting]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[memory leak]]></category>
		<category><![CDATA[Mongo]]></category>
		<category><![CDATA[Mongoid]]></category>
		<category><![CDATA[Padrino]]></category>
		<category><![CDATA[Padrino Framework]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby on Rails]]></category>
		<category><![CDATA[Sinatra]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1703</guid>
		<description><![CDATA[Lately I&#8217;ve fixed an issue with Mongoid driver (read more about this). Memory consumption stabilized at a relatively low level until&#8230; gem update mongo. Below you can see Munin memory and CPU consumption charts from a frontend server (frontend only presents data): There were some heavy issues on october 23d. Server went really crazy. Behavior [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Handling large seed files in Ruby on Rails</title>
		<link>http://dev.mensfeld.pl/2011/10/handling-large-seed-files-in-ruby-on-rails/</link>
		<comments>http://dev.mensfeld.pl/2011/10/handling-large-seed-files-in-ruby-on-rails/#comments</comments>
		<pubDate>Tue, 18 Oct 2011 20:37:15 +0000</pubDate>
		<dc:creator>Maciej Mensfeld</dc:creator>
				<category><![CDATA[Default]]></category>
		<category><![CDATA[paperclip]]></category>
		<category><![CDATA[Rails]]></category>
		<category><![CDATA[Rails 2.3.8]]></category>
		<category><![CDATA[Rails3]]></category>
		<category><![CDATA[Rails3.1]]></category>
		<category><![CDATA[rake]]></category>
		<category><![CDATA[RoR]]></category>
		<category><![CDATA[Ruby]]></category>
		<category><![CDATA[Ruby 1.8.7]]></category>
		<category><![CDATA[Ruby 1.9]]></category>
		<category><![CDATA[Ruby 1.9.2]]></category>
		<category><![CDATA[Ruby on Rails]]></category>
		<category><![CDATA[seed]]></category>

		<guid isPermaLink="false">http://dev.mensfeld.pl/?p=1696</guid>
		<description><![CDATA[Sometimes seed files can get messy and big. It can be real pain it the ass to manage them. Here is fast way to split single seeds.rb file: Create directory called seeds in your db/ directory (mkdir ./db/seeds) Remove all stuff from seeds.rb and move it into your newly created files under db/seeds/ directory (put [...]]]></description>
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		<slash:comments>1</slash:comments>
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