What is a KJAR?

Red Hat JBoss® BPM Suite and Red Hat Decision Manager (formerly Red Hat JBoss BRMS) both use an artifact packaging known as a “KJAR”, or knowledge artifact, since version 6. What is this file type? What separates it from a standard JAR file?

The basic summary

In very few words, a KJAR is a standard JAR file that has some extra files included. A KJAR keeps the same .jar extension as a JAR file, because its basic file structure is identical to that of a JAR.

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Introduction to Eclipse Vert.x – My First Vert.x Application

Let’s say, you heard someone saying that Eclipse Vert.x is awesome. Ok great, but you may want to try it yourself. The next logical question is “where do I start?”. This article is a good starting point. It shows: how to build a very simple Vert.x application (nothing fancy), how it is tested, and how it is packaged and executed. Basically everything you need to know before building your own groundbreaking application.

The code developed in this article is available on GitHub. This is part of the “Introduction to Vert.x Series”. The code for this post is located in the https://github.com/redhat-developer/introduction-to-eclipse-vertx repository in the post-1directory.

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Istio Route Rules: Telling Service Requests Where To Go

OpenShift and Kubernetes do a great job of working to make sure calls to your microservice are routed to the correct pods. After all, that’s one of the raison d’être for Kubernetes: routing and load balancing. What if, however, you want to customize the routing? What if you want to run two versions at the same time? How do Istio Route Rules handle this?

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Get Started on Process Driven Development with JBoss BPM

Are you interested in an introduction to the concepts of process management (BPM)?

Do you want to learn how your business can leverage process driven application delivery?

Are you looking for an easy to understand guide to mastering Red Hat JBoss BPM Suite tooling?

Do you need a step-by-step introduction to setting up JBoss BPM Suite including coverage of practical and important topics like data modeling, designing business rules and processes, detailed real world examples, and tips for testing?

For the last few years I’ve been working on putting years of experience with JBoss BPM Suite and community projects Drools and jBPM together into one easy to understand book.

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MicroProfile Fault Tolerance in WildFly Swarm

Every developer has the goal of building the most resilient application possible. Due to the distributed nature of microservices, resiliency and handling failures gracefully is mandatory. The Java ecosystem has some nice frameworks for fault tolerance, such as Hystrix or Failsafe. However, none of these provide a standard API, so using them means your application will be tightly coupled to that framework. The primary motivation for the MicroProfile specifications is to provide standard APIs that eliminates the tight coupling and improves deployment flexibility. This article will describe the main features of the MicroProfile Fault Tolerance specification, and then demonstrate how it was implemented in WildFly Swarm, the Red Hat MicroProfile implementation.

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Develop Cloud-native Applications with MicroProfile (Config & Health Check) and OpenShift

A previous article described the specifications in the Eclipse MicroProfile 1.2 release and the benefits for Java-based cloud-native applications. This article shows how software developers writing Java-based microservices can leverage those specifications to take advantage of the management capabilities provided by Red Hat OpenShift.

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