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Google +1 for Sharedaddy

Google published on 01 June the possibility to add Google +1 to your page, which is a great service to add to the existing sharing services.

Im using Sharedaddy, and I will not install another extra plugin to support Google +1 and the Sharedaddy option to add a custom service is not prepared for dynamic services like this one. That’s because I looked to integrate the service into Sharedaddy avoiding to change to much the plugin.

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ChiliProject 1.4.0 + Ruby Enterprise + Passenger + Apache2

I was a happy Trac user, but after seeing Redmine, I realized that Trac has many missing features and that you must do a lot of things with plugins, Redmine has this features out-of-box. After working a bit with Redmine I discovered ChiliProject, which is a fork of Redmine, and its actually compatible with Redmine Themes and Plugins.

Here is a comparison of Redmine/ChiliProject and Trac features:

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Memcached – Pages/Chunks and Rebalancing

It’s important to know how Memcached organizes the available memory and how Objects are saved to understand “strange” effects.

Memcached has Pages that have a size of 1Mb (in newer version you can configure them from 1Mb to 128Mb), these Pages are divided in Chunks. The size of the Chunks is created dynamically after start, depending on the size of the Objects you are saving. Memcached tries to save a Object in a Chunk were the basted space is minimal (An 49Kb Object will be saved in an 50Kb Chunk)

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Spidermonkey – Execute javascript from console

SpiderMonkey is the code-name for the Mozilla’s C implementation of JavaScript. This is useful to test part of our JavaScript from the console or in scripts.

In Debian we have a package called spidermonkey-bin.

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Installing TRAC with mod_wsgi using virtualenv

This guide is for installing Trac as a user using virtualenv for a isolated Python environment so that the whole installation runs under a specific user.

First of all we need to install needed packages

apt-get install libapache2-mod-wsgi python-virtualenv python-setuptools

Once we have installed the required packages proceed to create the Python environment

mkdir /usr/local/trac
cd /usr/local/trac
virtualenv python

We now have the isolated Python environment locate under /usr/local/trac/python.

To make possible to use easy_install with repositories we need to upgrade easy_install. I use this to install Trac plugins directly from SVN.

/usr/local/trac/python/bin/easy_install -U trunk

We now can install trac 0.12 using the 0.12b1 SVN Tag (http://svn.edgewall.com/repos/trac/tags/trac-0.12b1 or Trac==0.12b1) or directly from SVN Trunk:

/usr/local/trac/python/bin/easy_install http://svn.edgewall.org/repos/trac/trunk

This will download and install the latest trunk version for Trac.

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