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    How the V8 engine works?

    What is V8? V8 is a JavaScript engine built in the google development center in Germany. It is open source and written in C++. It is used for both client side (Google Chrome) and server side (node.js) JavaScript applications. V8 was first designed to increase the performance of the JavaScript execution inside web browsers. In order to obtain speed, V8 translates JavaScript code into more efficient machine code instead of using an interpreter. It compiles... Read more.

    29 Apr 2013 | Category: javascript


    Relational database and Normalization

    In relational database design, the normalization objective is to check whether or not a relationship fill the prerequisites for a given normal form. This will automatically minimize redundancy and anomalies in insertion, deletion and update. There is 4 basics and commonly used normal forms : first (1NF), second (2NF), third (3NF) and Boyce-Codd (BCNF) normal forms. First Normal Form 1NF makes reference to the concept of atomicity : Table represents a relation in which intersection... Read more.

    28 Feb 2013 | Category: database


    Ruby: tips, tricks and bytecode analysis

    My personal experience with Ruby Basically I am not a Ruby developer: it means I never pushed to production any code written in Ruby but it doesn’t mean I don’t like to play with it. For now I wrote two programs in Ruby, two web applications (with the help of the excellent MVC framework Ruby on Rails) for university projects. The source code of these two projects can be found on Github: LaFourchette2012 (source code)... Read more.

    11 Feb 2013 | Category: ruby


    Generics in C#

    One of the most important new feature of C# 2.0 (released in 2005) was the introduction of generics. Knowing how they are implemented is essential to understand key features they will bring later to C# and the .NET framework (technologies like LINQ for example). What are generics? Also called parametric polymorphism, generics consist in declaring a type with a type parameter that will be instantiated when it will be needed. It adds a great flexibility... Read more.

    12 Jan 2013 | Category: microsoft


    Calculating service availability

    MTBF, MTTD, MTTR and MTTF are the four parameters required to calculate the availability of a service or an individual component in a specific architecture. MTBF: Mean Time Between Faults MTTD: Mean Time To Detection MTTR: Mean Time To Repair MTTF: Mean Time To Failure Once we got this, we can calculate service availability with the following: MTBF = MTTD + MTTR + MTTF Availabiliy = MTBF / (MTBF + MTTR) Example: a component with... Read more.

    05 Jan 2013 | Category: system