An introduction to the Reactive Programming Paradigm — This is the first part of a series on Reactive programming with Spring WebFlux. Part 2 : An introduction to Spring WebFlux features If you are clueless about what reactive programming is, then you are in the right place. In part 1, we will see the basics of the reactive…

A step-by-step guide to build your first AI Chatbot — IBM Watson is a powerful platform where software developers and non-technical users can co-create AI solutions. Its easy-to-use interface allows you to quickly create an AI model, from simple chatbots to complex enterprise solutions. In this article, we will explore how to create, train and integrate your first Cognitive Virtual…

Hexagonal architecture is replacing the layered style — Hexagonal Architecture is an architectural pattern for designing software applications. Its popularity has increased in recent years as it is an alternative to a traditional layered architecture. What is the problem with layered architecture? This architectural pattern applies the SoC (Separation of Concerns) principle to decompose our components into layers, each one having a different responsibility. Typically…

Start designing user-centered automated tests for your APIs — The Screenplay Pattern is a design pattern for writing user-centered automated acceptance tests. Based on SOLID principles, this approach encourages good testing habits for the development of well-designed, easy-to-maintain and easy-to-read tests. Setting Up the Project Maven Dependencies To test REST APIs, add the Serenity BDD dependencies to your pom.xml…

Two strategies to map bi-directional relationships between entities — In object-oriented programming, an association is a relationship between two entities that defines how two objects communicate. An association can be one-to-one, one-to-many, many-to-one or many-to-many. Bi-directional associations happen when two classes define their relationships with each other symmetrically (symmetrical associations).

A solution for continuous database integration — When working for large organizations, we developers do not usually deploy our own applications. Therefore, we may need to leverage a migration tool to continuously integrate and deploy database schemas along with the rest of the code. In this article, we will explore how migration tools like Liquibase can help…

how to integrate S3 into your Spring Boot Kotlin applications — Many times, we as developers need to deal with large objects such as images, photos, documents, and so on. There are different alternatives available to store these objects: as a binary in the database, or directly on the server file system. …

Develop and test your Spring applications and Google Cloud Spanner — Google Cloud Spanner is a globally distributed relational database service. This solution provides ACID transactions and SQL semantics without sacrificing horizontal scaling and high availability. In this article, we will go through how to develop and test a Spring Boot Kotlin application using Spanner (for free). Why choosing Spanner?

A solution for continuous database integration — When working for large organizations, we developers do not usually deploy our own applications. Therefore, we may need to leverage a migration tool to continuously integrate and deploy database schemas along with the rest of the new code. In this article, we will explore how migration tools like Flyway can…