Architecture

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Why Sharing a Database Between Microservices is a Bad Idea

April 12, 2023April 12, 2023

Microservices architecture is a popular approach to building modern applications, where each service is designed to perform a specific set of tasks independently. Each microservice has its own database and communicates with other microservices through APIs. While this architecture provides many benefits, such as flexibility, scalability, and ease of maintenance, there are some potential drawbacks to consider. One such drawback is sharing a database between microservices.

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Creating your first cloud-agnostic serverless application with Java

September 23, 2022September 23, 2022

If you are new to Serverless Workflow or serverless in general, creating a simple application for a serverless infrastructure is a good place to start. In this article I wrote for the KIE blog, you will run through the steps to create your first serverless… Read More »Creating your first cloud-agnostic serverless application with Java

Getting Started with Service Calls and Serverless Workflow

May 19, 2022May 19, 2022

Workflows are great for orchestrating services, functions or events. They provide out-of-the-box features to make your applications resilient, reliable, and simple. But currently, each cloud vendor has its workflow solution. AWS has Step Functions, Google has Google Workflows, Microsoft has Azure Durable functions, and so… Read More »Getting Started with Service Calls and Serverless Workflow

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Creating More Intuitive Java APIs With Optional

November 3, 2021

Creating intuitive APIs is a very important skill for you to reduce the chances of bugs and make your software more maintainable. When you don’t create intuitive APIs, your code becomes error prone and the developers (including you) may misuse an API. Let’s see an… Read More »Creating More Intuitive Java APIs With Optional

How to Mock a Web Server Using WireMock in Your Java Applications

October 3, 2021October 3, 2021

When you need to test an application that consumes a web API, you basically have two options: Use Testcontainers to start a container that will run the web API which your application will consume. Mock a Web Server to emulate the web API which your… Read More »How to Mock a Web Server Using WireMock in Your Java Applications

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Should You Worry About Performance When Using java.util.Optional?

June 20, 2021April 24, 2023

A few days ago I did a post on LinkedIn talking about the Optional class. One comment was an excellent question: Could the use of Optional lead to performance degradation?
The answer is: Yes, it can. But should you worry?

4 Mistakes That Prevent Your Java APIs From Having More Users

March 18, 2021September 19, 2021

When you have more people using your Java APIs, your projects grow and naturally you become a better engineer. You become more likely to increase your incomes and join great new projects. It also enables people to get their jobs done faster. So it’s a win-win situation.

Creating Testable Applications with MicroProfile and CDI

August 24, 2020September 19, 2021

In software development, writing test code is just as important as writing the application code itself. An application without tests will quickly turn into a nightmare for the maintainers because every change needed, no matter how harmless it may seem, something may stop working as… Read More »Creating Testable Applications with MicroProfile and CDI

Why Should You Consider Using MicroProfile In Your Microservices?

July 22, 2020October 1, 2021

A Little Bit of History “Write once, run anywhere” was the slogan created by Sun Microsystems in 1995, when the first Java version came out. One thing that allowed this was the creation of specifications for the Java Language and the Java Virtual Machine. With… Read More »Why Should You Consider Using MicroProfile In Your Microservices?

Get Rid of java.lang.NullPointerException with Checker Framework

May 25, 2020September 19, 2021

Checker Framework is a tool that helps us to detect and prevent errors in our applications.It has several checkers that verify our code in search of bugs, and we can also write our compiler plug-ins.One of these checkers is the Nullness Checker, which provides us… Read More »Get Rid of java.lang.NullPointerException with Checker Framework