Java

In this DevNation Tech Talk, we build a portable, serverless blog search application for AWS Lambda using Java, Quarkus, GraalVM, and Apache Lucene.

Java and Containers: What's there to think about? | DevNation Tech Talk

You've implemented multitenancy using a database with JPA and WildFly. Now, set up multitenancy using a schema and EJB for container-managed transactions.

The new Red Hat build of Quarkus 1.7 supports native code compilation, in addition to a host of tools and extensions for developer productivity.

Get a guided tour of the XML extension for VS Code 0.14.0 release, including embedded settings documentation, customizable document outlines, and more.

Learn how to fine-tune your WildFly server or Red Hat JBoss Enterprise Application Platform configuration using the Ansible collection for JCliff.

Profiling Java inside containers with ContainerJFR | DevNation Tech Talk

Find out how to use Debezium's new Db2 connector and Red Hat AMQ Streams to capture row-level changes in IBM Db2 database tables.

Practising Quarkus

Antonio Goncalves

November 2, 2020

The only requirements to follow and understand this fascicle are having a knowledge of Java and having some knowledge of relational databases and Docker. This fascicle concentrates on Quarkus 1.8.2.Final. Its structure will help you to discover this technology as well as helping you to further dive into it if you already have some experience of it.

Explore the many improvements and bug fixes in JBoss Tools 4.17.0 and Red Hat CodeReady Studio 12.17 for Eclipse 4.17 (2020-09).

Discover Open Liberty 20.0.0.11's new Kerberos authentication support, plus collecting and visualizing data from Thanos data sources in Grafana dashboards.

Explore Fabric8 Kubernetes Java client 4.12.0's new features, including the new VolumeSnapshot extension, CertificateSigningRequests, and Tekton triggers.

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You can now use OpenJDK's JDK Flight Recorder to collect custom events. Learn how to use JDK Mission Control agents with JFR's Event API in your Java code.

Use Keycloak's authentication service provider interface to develop a custom MobileAuthenticator class that you can run in your JBoss EAP container.

Seven perilous pitfalls to avoid with Java | DevNation Tech Talk

Learn how to configure a Quarkus application with Red Hat Data Grid and deploy it on Red Hat OpenShift with Data Grid 8.1's new security features.

Don't let long load times bog down your Java applications! Learn how to use Checkpoint/Restore in Userspace (CRIU) for faster startup with checkpoints.

Quarked testing: Writing tests for Quarkus

Alex Soto Bueno +1

October 12, 2020

In this DevNation Tech Talk, we show you how to test Quarkus applications and services, from components like mocks to topics like persistence tests.

Explore the new Automatic Certificate Management Environment (ACME) protocol support available through the Open Liberty 20.0.0.10 Java Red Hat Runtime.

Kubernetes integration and more in odo 2.0

Serena Chechile Nichols +1

October 6, 2020

Explore the updates in the odo 2.0 CLI, which now integrates with Kubernetes, defaults to devfile deployments, and lets you deploy Operators.

Open Liberty 20.0.0.9 lets you experiment with the type-safe SmallRye GraphQL Client API and write/run GraphQL queries and mutations faster with GraphiQL.

Create a Camel K integration that calls an existing REST service and uses its existing data format—Maven Java objects, in the case of this example.

Build a Quarkus application that streams and processes data in real-time using Kafka Streams. As we go through the example, you will learn how to apply Kafka concepts such as joins, windows, processors, state stores, punctuators, and interactive queries.