Archive for the ‘Technology’ Category.

Introduction to Event-Driven Programming and the Reactor Design Pattern

I gave this 5mn lightning talk to my team:

Presentation on Scribd

I will post more on the subject in the future:

One of my personal project involves PubSubHubbub and EventMachine and I’m becoming curious|excited about Javascript’s Node.JS.

Update to the MogileFS setup guide

I’ve done minor changes to  the installaion guide for MogileFS following feedback from Craig.

In addition, he noticed that on some Xen VMs, you may encounter the following error:


ERROR: Need to be root to increase max connections

in which case, you will need to update /etc/security/limits.conf with the values:


mogile soft nofile 65535
mogile hard nofile 65535

Finger Shopping

Can you imagine yourself doing your grocery shopping and when you arrive at the till, you pay only by putting your finger on a finger print reader?

According to this spanish article, there is a trial in Germany that seems successful enough to be extended to hundreds of stores.

Apparently the system is found useful by elderly people who don’t have to memorize pin number, or fiddle with coins and notes.

The drawback is that it is one more company to hold your payment details.
In other hand, being brick and mortar, they are not going to disappear the next day.

Source: faq-mac