Skip to main content

From Layers to Microunits

The evolution of “Code Cohesion” and “Separation of Concerns”

The software industry has recognized the values of “Separation of Concerns” and “Code Cohesion” for more than two decades. Many articles, books and software-thinkers have contributed methodologies to implement these important values.

In this short article I’d like to compare the conservative “Layers” solution with a new approach, which I call “Microunits”, that can open new ways of solving software design challenges.

Read more...

Comments

Post a Comment

The Best

Rendering Dynamically JavaScript Files from Server Side Code

Today's RIA applications require us to build robots apps with minimal post-backs cycles, this requirement forces us to make an extensive use of JavaScript and technologies as AJAX. Today I want to blog about "Rendering Dynamically JavaScript Files from Server Side Code", this is a very useful and elegant (and strangely not discussed enough) technique that can improve our RIA application architecture. Good But Not Perfect So let's try to describe a small task and it's solution to make a good picture about this strong technique. You work on a "Rental Car" application that is in charge of keeping track of all rented cars and sends an email notification to the "Rental Car" company manager about cars that their rental period already exceeded. As mentioned before, your app makes an extensive use of JavaScript and AJAX in order to improve users experience. Now, let's also say that you need to read the SMTP configuration parameters, such ...
Post a Comment
Read more

Method Breakpoints are Evil

Some IDEs expose an option to set "Method Breakpoints", it turns out that "Method Breakpoints" might tremendously decrease debugger's performance. In this article, I explain what are "Method Breakpoints" and the reasons they impact performance so badly. To better understand this subject I will cover how Debuggers works under the hoods and how Breakpoints and Method Breakpoints are implemented internally. Java Platform Debugger Architecture JDPA is an architecture designed for enabling communication between debuggers and debugees. The architecture consists of three APIs: JVM Tool Interface (JVM TI) - A native interface which defines the services a VM must provide for debugging purposes Java Debug Wire Protocol (JWDP) - A textual API which defines the communication's protocol between debugee and debugger Java Debug Interface (JDI) - Defines a high-level Java API designed to facilitate the interaction between debugge and debuggers. ...
1 comment
Read more