Used IDE: IntelliJ (Maven)
Spring/SpringBoot Setup

Spring-Container / Dependency Injection

REST WebService with JPA/Hibernate, Spring Data

Persistence Context, Transaction, JPQL
Relations: @OneToOne, @OneToMany, @ManyToMany
Used databases: H2, MySQL, MongoDB

Asynchronous REST WebService
Project Reactor with Web Flux (Spring Reactive)
Using Netty Server; MongoDB Reactive

Serving Web Content with Spring MVC
Model-View-Controller (CRUD), Handling Form Submission
Template Engine: Thymeleaf

Testing, IntegrationTest, Mocking

MicroService Architecture using SpringCloud:
Config Server, OpenFeign, Service Registry, Loadbalancing

Create distributable jar
SpringBoot Deployment with Docker Container,

Spring Actuator and Admin Server

Scheduling Tasks, Caching Data with Spring,
Spring Internationalization,

Spring CLI (Command Line Interface): a tool that allows developers to bootstrap and
manage Spring-based applications from the command line

Spring Data Integration:
Integrating Spring Data with Apache Kafka involves configuring your Spring Boot
application to use Kafka for messaging data

Spring Retry:
a library that provides declarative retry support for Spring applications.

Spring Security:
AuthenticationFilter, Authorization, Method Security, Password Management,
AuthenticationProvider