✨ Saas Enterprise Resource Plan (开源Sass AI ERP系统)

This is an example application to show howto use Spring Boot 4, Angular 20, Kafka with Streams and Mongodb with the reactive features of Spring in a clean architecture and a Helm chart for the Kubernetes setup. Structurizr is used for C4 diagrams. Standalone Components are used with Angular.

This project shows howto use Angular 20 and Spring Boot 4 and Jpa with a Maven build in clean architecture. For development/production the H2/Postgresql databases are used. The databases are managed with Liquibase. Structurizr is used for the diagrams. Standalone Components are used with Angular.

A project to show howto use SpringAI with OpenAI to chat with the documents in a library. Documents are stored in a normal/vector database. The AI is used to create embeddings from documents that are stored in the vector database. The vector database is used to query for the nearest document. That document is used by the AI to generate the answer.

Personal Portfolio Website (Charity, GitHub, & Brew APIs built with Spring Boot & ReactJS)

Sample Data Manager with Thymeleaf Frontend & Spring Boot Backend (using JPA for DAO layer)

This project shows howto use Angular 20 and Bing Maps and Spring Boot 4 and Jpa with a Gradle build in clean architecture. For the communication between the frontend and the backend GraphQl is used. For development/production the H2/Postgresql databases are used. The databases are managed with Liquibase. Angular Standalone Components are used.

Screaming Architecture, Clean Architecture, Event-Driven Architecture, Clean Code, Domain-Driven Design, SOLID Principles, Test Pyramid, Patterns (Ambassador, Circuit Breaker, Mediator, Outbox, Result, Retry, Strategy), Java, Spring Boot, Kong, Keycloak, Kafka, MongoDB, Redis, Elastic, Kibana, Swagger, Testcontainers, Docker

Sample Cron job using Spring annotations

Sample App to manage Shopping Cart items (add item, calculate total, tax, net price..). Focus on test coverage.

Sample API to manage simple cart via Kotling / Spring Boot API

What is new in Spring Boot 4 and Spring Framework 7

Sample API that integrates with HAPI FHIR & HL7 Interfaces for Medical Information (Spring Boot Backend)

OpenAPI Specification based auto stub generating application

Spring Boot 4.0 microservice project demonstrating full-stack observability (Logs, Metrics, Traces) using OpenTelemetry and the Grafana LGTM stack (Loki, Grafana, Tempo, Mimir).

Advanced Weather Proxy API demonstrating Spring Boot 4, Redis Rate Limiting, and secure Jackson 3 caching patterns.

This repository is for learning Testing with Spring Webflux parallel to the [Learning Webflux 3.0] repository

This repository is for learning R2DBC with Spring Webflux parallel to the [Learning Webflux 3.0] repository

POC Spring Webflux and Security, and experiment Spring Boot 4.0

This repository is for learning REST/HTTP with Spring Webflux parallel to the [Learning Webflux 3.0] repository