Amazon Web Services X1 Instances

Aws  released the x1 instances. The new instance type offers 128 virtual cores and  about 2 tb of RAM. I will never stop to be susprised of this job, i still feel excited reading this stuff. I feel like my son when he sees a new toy, he just wants to play with it. The new […]

Redhat Enterprise Linux it’s free now! (for development scope!)

From Yesterday, Redhat Enterprise Linux is free for usage for developers! This is a incredible news for anyone having worked with the best enterprise Linux distro. This is an evident countermeasure against Ubuntu and Amazon Linux, well done Redhat! http://developers.redhat.com/blog/2016/03/31/no-cost-rhel-developer-subscription-now-available/ In simple words, I am sorry CENTOS 🙂 I loved you but it’s over

Dropbox Magic Pocket

Dropbox, one of the biggest AWS installation, implemented its own storage solution The reading is very interesting and highlights what is under the hood of this fantastic service.   Actually dropbox has impressive numbers. They currently have 500 PB of data, very few companies in the world have such a massive amount of storage.   […]

PHP Don’t know how to define struct flock on this system

Introduction While compiling a custom version of PHP (5.6.14) on a Redhat 6.5 I got the following error: configure: error: Don’t know how to define struct flock on this system, set –enable-opcache=no Looking around on the net didn’t find a lot of information about it.   Solution Using a bit of logic and understanding that […]

CppCon 2015: Bjarne Stroustrup “Writing Good C++14”

Introduction This is a very good talk from Stroustrup about good rules to be followed when writing modern C++ applications. The first 25 minutes are generic about teams coding guidelines which I personally believe apply to any programming language. The rest of the video is very valuable, in particular about different approaches to avoid typical […]

Data structures considerations in concurrency situations

This short article is worth for reading. It provides useful considerations about typical data structures (linked lists, Balanced Search Trees) in multi concurrency environments. People often underestimates the concurrency requirements of the data structure they use. This article (basic) provides useful information. Deadlock is our enemy! http://www.drdobbs.com/parallel/choose-concurrency-friendly-data-structu/208801371?pgno=1

Top 6 misconceptions about Linux containers

Watch out this video from Redhat about the most common 6 misconceptions about Linux containers. A typical common question is: are linux containers secure? The response is usually no. Unless you take important countermeasures. I do believe that the situation won’t change until username space will be officially released. I hope Redhat will do it […]