Open Liberty is a lightweight, production-ready Java runtime for containerizing and deploying microservices to the cloud, and is now available as part of a Red Hat Runtimes subscription. If you are a Red Hat Runtimes subscriber, you can write your Eclipse MicroProfile and Jakarta EE apps on Open Liberty and then run them in containers on […]
Developing distributed applications is complicated. You can wait to monitor for performance issues once you launch the application on your test or staging servers, or in production if you’re feeling lucky, but why not track performance as you develop? This allows you to identify improvement opportunities before rolling out changes to a test or production […]
In this article, I’ll explore the “PLEG is not healthy” issue in Kubernetes, which sometimes leads to a “NodeNotReady” status. When understanding how the Pod Lifecycle Event Generator (PLEG) works, it is helpful to also understand troubleshooting around this issue. What is PLEG? The PLEG module in kubelet (Kubernetes) adjusts the container runtime state with […]
Our first DevNation Live regional event was held in Bengaluru, India in July. This free technology event focused on open source innovations, with sessions presented by elite Red Hat technologists. In this session, Kamesh Sampath introduces Tekton, which is the Kubernetes-native way of defining and running CI/CD. Sampath explores the characteristics of Tekton—cloud-native, decoupled, and […]
In this article, we demonstrate Red Hat OpenShift’s horizontal autoscaling feature with Red Hat Fuse applications. The result is a Spring Boot-based application that uses the Apache Camel component twitter-search that searches Twitter for tweets based on specific keywords. If traffic or the number of tweets increases, and this application cannot serve all requests, then […]
New features in Red Hat CodeReady Studio 12.13.0.GA and JBoss Tools 4.13.0.Final for Eclipse 2019-09November 11, 2019
JBoss Tools 4.13.0 and Red Hat CodeReady Studio 12.13 for Eclipse 2019-09 are here and waiting for you. In this article, I’ll cover the highlights of the new releases and show how to get started.
Red Hat Developer eBooks
Modern Java EE Design Patterns: Building Scalable Architecture for Sustainable Enterprise Development
Building Reactive Microservices in Java: Asynchronous and Event-Based Application Design
Introducing Istio Service Mesh for Microservices
Microservices for Java Developers: A Hands-on Introduction to Frameworks and Containers
Red Hat Developer cheat sheets
Advanced Linux Commands Cheat Sheet
Kubernetes Cheat Sheet
Containers Cheat Sheet
Podman Basics Cheat Sheet
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DevNation Live: DevNation Tech Talk: Serverless Kafka
Presented by Matthias Wessendorf on November 21, 2019 at 12:00 PM ET / 16:00 UTC
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