_Quick-reference guides for developers — Java, Angular, Kubernetes & more._
Java 25

Java Streams

Stream-Operationen, Collectors, Gatherers, mapMulti & mehr.

 Java 25

Java Serialization

Serializable, Record Serialization, Deserialization Filters & Best Practices.

 Java 25

Java Concurrency

Virtual Threads, Structured Concurrency, Scoped Values & klassische Concurrency.

 Java 25

Java 25 New Features

Compact Source Files, Flexible Constructors, Module Imports, AOT & mehr.

 Jakarta EE 11

Jakarta EE 11

CDI, REST 4.0, JPA 3.2, Data 1.0, Security, Concurrency & mehr.

 Angular 21

Angular

Signals, Zoneless, Control Flow, Components, Routing, HttpClient & mehr.

 React 19

React

Hooks, Actions, useActionState, useOptimistic, React Compiler & mehr.

 Git

Git

Branches, Merge, Rebase, Stash, Bisect, Worktrees & Tipps.

 K8s

Kubernetes

kubectl, Pods, Deployments, Services, Ingress, RBAC & mehr.

 OpenShift

OpenShift

oc CLI, S2I Builds, Routes, ImageStreams, SCCs & Projekte.

 Tekton

Tekton

Tasks, Pipelines, Workspaces, Triggers & tkn CLI.

 Argo CD

Argo CD

GitOps, Applications, ApplicationSets, Sync Waves & Hooks.