Overview

Project structure

The following tutorial explains how to setup an authorization server using Spring security 5.

Check this out: https://docs.spring.io/spring-data/rest/docs/current/reference/html/#reference

Best practices for REST API designStack Overflow Blog

Accessing Keycloak Endpoints Using Postman | BaeldungBaeldung

This is a great tutorial that helps you understand how to use Postman with an authorization server.

OpenID Connect

Final: OpenID Connect Discovery 1.0 incorporating errata set 1

How to design a REST API

REST Security - OWASP Cheat Sheet Series