jd:/dev/blog

OpenStack Design Summit Juno, from a Ceilometer point of view

Friday 30 May 2014 OpenStack, Ceilometer Comments

Last week was the OpenStack Design Summit in Atlanta, GA where we, developers, discussed and designed the new OpenStack release (Juno) coming up. I've been there mainly to discuss Ceilometer upcoming developments.

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Making of The Hacker's Guide to Python

Wednesday 07 May 2014 Python, Books Comments

As promised, today I would like to write a bit about the making of The Hacker's Guide to Python. It has been a very interesting experimentation, and I think it is worth sharing it with you.

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Doing A/B testing with Apache httpd

Sunday 06 April 2014 Apache HTTP Server Comments

When I started to write the landing page for The Hacker's Guide to Python, I wanted to try new things at the same time. I read about A/B testing a while ago, and I figured it was a good opportunity to test it out.

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The Hacker's Guide to Python released!

Tuesday 25 March 2014 Python, Books Comments

And done! It took me just 8 months to do this entire book project around Python. From the first day I started writing to today, where I finally publish and sell – almost entirely – myself this book. I'm really proud of what I've achieved so far, as this was something totally new to me.

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OpenStack Ceilometer Icehouse-2 milestone released

Friday 24 January 2014 OpenStack, Ceilometer Comments

Yesterday, the second milestone of the Icehouse development branch of Ceilometer has been released and is now available for testing and download. This means the first half of the OpenStack Icehouse development has passed!

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Databases integration testing strategies with Python

Monday 06 January 2014 Python, Ceilometer, OpenStack Comments

The Ceilometer project supports various database backend that can be used as storage. Among them are MongoDB, SQLite MySQL, PostgreSQL, HBase, DB2… All Ceilometer's code is unit tested, but when dealing with external storage services, one cannot be sure that the code is really working. You could be inserting data with an incorrect SQL statement, or in the wrong table. Only having the real database storage running and being used can tell you that.

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OpenStack Design Summit Icehouse, from a Ceilometer point of view

Wednesday 13 November 2013 OpenStack, Ceilometer Comments

Last week was the OpenStack Design Summit Icehouse in Hong-Kong where we, OpenStack developers, discussed and designed the new OpenStack release (Icehouse) that is coming up.

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Python 3.4 single dispatch, a step into generic functions

Tuesday 17 September 2013 Python, Lisp Comments

I love to say that Python is a nice subset of Lisp, and I discover that it's getting even more true as time passes. Recently, I've stumbled upon the PEP 443 that describes a way to dispatch generic functions, in a way that looks like what CLOS, the Common Lisp Object System, provides.

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OpenStack Ceilometer Havana-3 milestone released

Tuesday 10 September 2013 OpenStack, Ceilometer Comments

Last week, the third and last milestone of the Havana development branch of Ceilometer has been released and is now available for testing and download. This means the end of the OpenStack Havana development time is coming, and that the features are now frozen.

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Announcing The Hacker's Guide to Python

Tuesday 03 September 2013 Python, Books Comments

I've been hacking on Python for a lot of years now, on various project. For the last two years, I've been heavily involved in OpenStack, which makes an heavy usage of Python.

Once you start working with a hundred of hackers, on several software and libraries representing more than half a million source lines of Python, things change. The scalability, testing and deployment problems inherent to a cloud platform meddle with everything in designing components.

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