Reactive on foojay.io - Friends Of OpenJDK

Optimizing Java for the Cloud-Native Era with Quarkus

Tue, 06 Jan 2026 21:09:00 +0000

This article explores how Quarkus can help organizations reduce costs, streamline development, and modernize their Java applications for today’s cloud-native environments. It outlines the real-world benefits of adopting Quarkus and highlights how its core features address the performance and scalability challenges commonly associated with traditional Java frameworks.

Quarkus is already being adopted across industries. One example is Orange, a global telecom provider that selected Quarkus to support its 5G API initiative, and benefited from fast startup times, a lightweight footprint, and seamless integration with Kubernetes.

Spring Framework – Internals of RestClient

Mon, 25 Mar 2024 11:32:54 +0000

As a developer and architect, my constant pursuit is to achieve simplicity and elegance when constructing resilient and intricate enterprise applications. With my affinity for the Spring Framework, I have witnessed firsthand the simplicity and modernization it brings to the Spring Ecosystem.

This framework enables the creation of complex enterprise applications in a more streamlined and refined manner, boasting a sophisticated diffusion and transformer architecture.

Spring RestClient

Spring Boot 3.2 launched and introduced a range of captivating functionalities. Notably, the release includes the RestClient feature, which offers a contemporary approach to developing REST endpoints.

Journeys in Java, Level 10: Service Discovery with Eureka

Thu, 13 Jul 2023 06:39:06 +0000

Gaining complexity in a microservices system certainly isn’t for the faint of heart (though neither is complexity in monoliths!).

When there are many services that need to communicate with one another, we might need to coordinate multiple services communicating with multiple other services.

We also might code for varying environments such as local, development server, or the cloud.

How do services know where to find one another?
How can we avoid problems when a service is unavailable?
How do we handle requests when we scale up or down certain parts of our system?

This is where something like Spring Cloud Netflix Eureka comes into play.

Coroutines on the RaspberryPi (Pi4J-Kotlin)

Sat, 01 Apr 2023 09:05:29 +0000

If you didn’t know already, Pi4J has had a Kotlin DSL for quite some time now.

And I’m here to announce the latest release v2.4.0 with a sack of additions and to tell you about all the good stuff that’s been added since the first release.

1. Coroutines

If the pi4j { … } wasn’t good enough for ya, and you want to use coroutines instead of weaving fat threads on your precious precious Pi, you can now use the new pi4jAsync { … } block—It can do everything pi4j { … } does + you can run suspended functions within.

Gossips: An Event-Bus in a Chatty Neighbourhood

Thu, 24 Nov 2022 08:35:32 +0000

In this article, we’ll tackle a common issue: simple communication between system components. With a slightly controversial, themed, domain-driven design.

Though this post has nothing to do with Android, we need a context where an Event-Bus is needed. And boy oh boy is it needed in Android! And we’ll use this as an excuse to write an Event-Bus.

I chose an analogy for the entire thing: Gossips;\

It fits with the nature of the library, and the way it’ll be used. A global pub-sub component to enable cross-component communication.

Kotlin on the RaspberryPi (Pi4J-Kotlin)

Thu, 17 Nov 2022 13:37:18 +0000

Intro

Pi4J is considered the project that brought the JVM to the RaspberryPi.

It has been up for more than a decade allowing developers to write sophisticated, high-level, yet simple software on the RaspberryPi.

And we’re glad to make it even more simpler and powerful!

For quite some years now Kotlin has been a most welcome language in the JVM ecosystem and the modern development toolchain.

Many factors led to this great reality, most notable to me is Kotlin’s non-disruptive integration and seamless developer experience.

Building Reactive Java Applications with Spring Framework

Tue, 15 Feb 2022 14:09:28 +0000

In one of our many free tutorials on DataStax Developers YouTube channel, we walked you through how to build a reactive implementation of Spring PetClinic in Apache Cassandra® using Spring WebFlux. The full series is available on YouTube.

If you’re a Java developer who uses the Spring ecosystem, you’ve probably seen the Spring Pet Clinic. In this workshop, we will walk you through a new reactive implementation of the Pet Clinic backend that uses Spring WebFlux and Apache Cassandra® (via DataStax Astra DB).