Publisher on Micha Kops' Tech Notes

Messaging with NATS and Java

Tue, 26 Nov 2024 00:00:00 +0100

Figure 1. NATS Architecture Component Diagram

NATS is a high-performance messaging system that offers simplicity, speed, and scalability. It is particularly suited for building distributed systems and microservices.

This article demonstrates how to integrate NATS with Java, showcasing the essential steps to set up, connect, and publish/subscribe to messages.

Prerequisites

Before diving in, we should ensure to have the following installed:

Java Development Kit (JDK) 11 or later.
Maven or Gradle for dependency management.
Docker (optional).

Reactive Streams – Java 9 Flow API, RxJava, Akka and Reactor Examples

Sun, 14 Jan 2018 00:00:00 +0100

Reactive Streams is an initiative trying to standardize asynchronous stream processing with non-blocking back-pressure. With Java 9, new classes in the java.util.concurrent.flow package offer a semantically equivalent counterpart to this standard that may be adopted by other frameworks.

In the following short tutorial we’re implementing examples for reactive streams with Java 9 and the Flow API, with RxJava2, with Akka, with Reactor and finally there is an example in RxJava1, too though it does not follow the standard.

Message Driven Beans in Java EE 6

Sun, 05 Jun 2011 00:00:00 +0200

Message Driven Beans are no new concept due to the fact that they exist since EJB 2.0 but in Java EE 6 and the EJB 3.0 specification it is even more fun to use them.

In this tutorial we’re going to take a look at the specification and create an example application that transfers some objects via the Java Message Service to a Message-Driven Bean deployed on a GlassFish application server.