Copy & Paste is for Word

JQueue: A Library to Implement the Outbox Pattern

Posted on October 23, 2022

In microservices or any other event-based architecture, in some use cases, a service might require us to make changes to their own local database and also publish an event. That event is then consumed by other services. To have a consistent software system, it is mandatory that these two actions... [Read More]

Tags: Microservices Event Based Architecture Java

Implementing Progressive Web Apps with React

Posted on June 20, 2022

Here is my third book. Did you know that with PWAs you can create Web Apps that deliver a user experience similar to native apps? Did you know that with the React tooling most of the work to create them is almost done? I will explain how to create PWAs... [Read More]

Links: Buy it on Leanpub Download Sample

Tags: React Progressive Web Apps

Understanding React

Posted on December 25, 2021

Here is my second book. Learn how to code applications in React by following a solid path that starts by studying essential JavaScript constructions to then go into React core concepts to finally write an application. Understand how to split an application into components (class or function-based ones), how to... [Read More]

Links: Buy it on Leanpub Download Sample

Tags: React SPA

Coding an Architecture Style

Posted on June 12, 2020

I have just released my first book about hands-on Software Architecture. If you want to know how to design and code an application with Modular Architecture, or with Layered Architecture or with Hexagonal Architecture (Clean Architecture), or with Microservice Architecture this book is for you. If you are a developer... [Read More]

Links: Buy it on Leanpub Download Sample

Tags: Software Architecture Design

Object Oriented Frameworks: Concepts, White Box and Black Box Examples

Posted on June 11, 2016

When teaching Object Oriented Frameworks (usually in Advanced Object Oriented Programming courses) there is a challenge for students to understand their nature, differences with libraries and the difference between white box frameworks vs black box frameworks. [Read More]

Tags: Object Oriented Framework

Lambda Expressions in Java, a Concrete Example

Posted on November 15, 2015

Maybe you have read several posts on the web on how Lambda Expressions are used. Most of the ones I have read uses examples for filtering collections with the new Stream API of Java 8. Those examples are good but they are more focused on showing a fancy way of... [Read More]

Tags: Object Oriented Lambda Expressions

Use Inheritance Properly

Posted on August 8, 2013

How many times did you ask yourself, in order to avoid duplicated code, if you should use inheritance or composition? Did you ask yourself about the differences between subtype and subclass? Do you always follows the Liskov Substitution Principle? This post will try to help to answer these questions. And... [Read More]

Tags: Object Oriented Inheritance

Please, use the debugguer

Posted on December 24, 2012

I have found, during my experience (which is far from large one) working with other developers, that few of them use the debugger as the first tool for troubleshooting and learning or understand legacy code. If you are familiar with Java/Eclipse, you will know that debugging an application is pretty... [Read More]

Tags: debug

Software Architecture vs Software Design

Posted on July 13, 2011

I cannot find in the literature a precise distinction between Software Architecture and Software Design. Of course, I did not read all the books about software Architecture available in the market, but I read two great books, which I recommend (mentioned on footnotes below), but neither of them, IMHO, are... [Read More]

A Note on the Definition of Legacy Code

Posted on June 20, 2011

Many developers think that Legacy Code is an old code base that they inherit. A working application that other developer or other team wrote and you inherit it to maintain or enhance or to migrate to a newer platform. This is not entirely true, according to the definition of Michael... [Read More]

What is the role of a Software Architect ?

Posted on May 22, 2011

If you are an Architect you may have discovered that you are not going to be asked to spend all your time on improving the design of an existing software product, nor to write code for an specific project. As soon as you become an Architect, your meeting’s calendar will... [Read More]