DevOps Exchange London: Continuous Delivery

2014-07-29

Last Thursday (24th July 2014) I went to the DevOps Exchange London Meetup on Continuous Delivery; here is my quick review of the talks and what I took away.

Five Neat Little Python Libraries

2014-07-23

Here are some great little Python libraries that have made my life (well, at least the coding part) a little bit nicer and easier. They mostly add neat syntax and a few things that you always wanted to do, but never knew.

Installing and Removing R Packages With Ansible

2014-07-19

I was asked by some of our Data Scientists to get a few R packages onto their server, which I configured by Ansible. R seems to be bit funny compared to other programming languages because it’s package installation happens inside R code, rather than with a dedicated commandline utility.

Extending Django’s QuerySet to return approximate COUNTs

2014-07-16

I was looking through the MySQL slow_log for YPlan and discovered that there were a lot of SELECT COUNT(*) queries going on, which take a long time because they require a full table scan. These were coming from the Django admin, which displays the total count on every page.