Spring

The project is an integrated platform designed to manage Energy Saving Certificates ( ESC) or Certificados de Ahorro Energético (CAE), enabling organizations to streamline the tracking, verification, and reporting of energy savings. It supports compliance with regulatory frameworks by providing tools to issue, monitor, and trade CAEs securely and transparently. The platform facilitates efficient administration and promotes sustainable energy use by automating certificate lifecycle management from issuance to settlement.

Backend Sistema de Gestão de Crises

Repository for the browsable version of the RINF technical parameters. Link: https://data-interop.era.europa.eu/era-vocabulary/rinf-appGuide/

Also shows Generic Packages version management, creation, upload and download.

REST service for accounting. It is focused on automation and integration with various systems for reducing the routine.

Searching for Additional Problems

Saga pattern with an orchestrator for managing long‑running distributed transactions. A central coordinator (orchestrator) directs microservices through a series of steps and compensation actions when necessary. It’s a learning lab designed to contrast with event‑driven choreography, show transaction boundaries, and explore rollback strategies in distributed systems.

Event‑driven microservices using Apache Kafka. It includes producers, consumers, topic schemas, and event handling logic designed to illustrate real‑world patterns like event sourcing, pub/sub design, consumer groups, and eventual consistency. The goal is to explore Kafka integration in a microservices ecosystem with practical code examples and architectural principles.

E-commerce backend built with Java 17 + Spring Boot 3, Clean Architecture, Kafka, Elasticsearch, MySQL, JWT auth and observability (Filebeat + Elasticsearch).

The Service Cluster allows users to rate movies and leave optional comments. It's built with Spring Boot 3 and Spring Cloud, using REST communication between microservices. The system focuses on storing and retrieving individual ratings, with no analytics involved. Gradle is used for build and dependency management.

The GitLab handbook, rendered with Hugo and GitLab pages. https://handbook.gitlab.com/ Everyone can contribute.

Development and contribution guidelines: https://handbook.gitlab.com/docs/development/

Workshop for Spring Boot and Kafka

REST API supporting the creation, saving, searching, and management of dessert themed recipes. The API has both the option to search for recipes from an existing database (updated weekly for supported bakeries via a scraping job) or to save a recipe based on a URL. In addition to this, there is CRUD for user accounts.

The API is backed with Spring Security and uses JWT tokens for endpoint authentication.

Test handbook fork

Backend REST API for the Pop Up application. This API is built using Java and SpringBoot.

Este proyecto forma parte de un bootcamp enfocado en la construcción de una API REST utilizando Spring Boot como framework principal. El repositorio original, alojado en GitLab, sirve como base para desarrollar los requerimientos funcionales, las tecnologías utilizadas incluyen a Java, con Spring Boot como framework de desarrollo, PostgreSQL como base de datos relacional, y Docker para garantizar la portabilidad y consistencia del entorno.