The goal of this project is to implement a Spring Boot application, called movies-api, and use Filebeat & ELK Stack (Elasticsearch, Logstash and Kibana) to collect and visualize application's logs …

The goal is to play with Spring Kafka. We've implemented 5 examples of producer and consumer services that exchange messages through Kafka using different types of serialization and approaches.

The goal of this project is to compare some Java Microservice Frameworks like: Quarkus, Micronaut and Spring Boot. For it, we will implement applications using those frameworks, build their JVM and…

The goal of this project is to play with Spring Cloud Stream Event Routing and CloudEvents. For it, we will implement a producer and consumer of news & alert events.

The goal of this project is to create two applications: one as a Spring Boot producer and the other as a Spring Boot consumer. We'll be using Spring for Apache Kafka and Spring Cloud Stream.

The goal of this project is to implement a "News" processing pipeline composed of five Spring Boot applications: producer-api, categorizer-service, collector-service, publisher-api and news-client.

The goal of this project is to use Nginx as a reverse proxy and load balancer for a Keycloak cluster with two instances and a Spring Boot application, called simple-service, also with two instances…

The goal of this project is to create a Spring Boot application called movies-app that allows users to log in using Username/Password Authentication and One-Time Token Login

The goal of this project is to create a Spring Boot application called movies-app that allows users to log in using their LDAP pre-defined account LDAP Authentication and One-Time Token Login

The goal of this project is to implement an application called product-app. It consists of two Spring Boot services: product-api (backend) and product-ui (frontend). Data will be stored in Elastics…

Goal: create a Spring Boot application that handles users using Event Sourcing. So, whenever a user is created, updated, or deleted, an event informing this change is sent to Kafka. Also, we will i…

The goal of this project is to study the JPA relationships: one-to-one, one-to-many / many-to-one, and many-to-many.

The goal of this project is to study JPA Batch Processing (i.e., inserting, updating, or deleting a set of records in a single command) and JPA Locking.

The goal of this project is to play with Spring WebFlux on client and server side. For it, we will implement some Spring Boot Java Web applications, product-api, customer-api, order-api and client-…

The goal of this project is to implement two Spring Boot applications: bitcoin-api and bitcoin-client. The bitcoin-api application simulates BTC price changes, while the bitcoin-client application …

The goal of this project is to implement an application where a user can manage (create/read/update/delete) jobs. For it, we will create: a backend Restful API called jobs-api and a frontend user i…

The goal of this project is to develop a straightforward Spring Boot REST API application, named simple-service, which utilizes Okta for authentication handling.

Goal: create a Spring Boot app called book-service accessible only through the Kong API gateway. In Kong, the kong-oidc plugin will be installed, enabling communication between Kong and Keycloak. T…

The goal of this project is to explore how caching works. To achieve this, we will implement a simple Spring Boot application called "restaurant-api." We will use Neo4j for storage and select one o…

The goal of this project is to create a simple Spring Boot REST API, named 'simple-service,' and secure it using the Spring Security LDAP module. Additionally, Testcontainers will be utilized for i…

Goals: 1) Create a simple Spring Boot application to manage users. 2) Explore the utilities and annotations that Spring Boot provides for testing. 3) Test using Testcontainers.

The goal of this project is to create a simple Spring Boot REST API and secure it with Kong using the LDAP Authentication and Basic Authentication plugins. Besides, we will explore more plugins tha…

The goal of this project is to play with RSocket protocol. To do this, we will implement three Spring Boot Java applications: movie-server, movie-client-shell and movie-client-ui. For storage, the …

This project shows how to implement an interactive news broadcasting app. A user can post news using a REST API, and it gets sent out to users instantly through a live WebSocket connection. Users c…

api-oha-benchmarker is a tool to easily benchmark APIs. It uses Testcontainers to manage Docker containers. Load testing is done with OHA. To collect information such as CPU and memory usage, it us…

The goal of this project is to create an application that produces and consumes delayed messages randomly. Those messages are sent to ActiveMQ or RabbitMQ. The delayed broker to which the message i…

On this website, I have compiled my Proof-of-Concepts (PoCs) and articles. You can easily search for the technology you are interested in by using the filter. Who knows, perhaps I have already impl…

The goal of this project is to play with Solace PubSub+. For it, we will implement a producer and consumer of different types of news about many countries and cities.

In this project, we will use LocalStack to locally simulate some services provided by AWS Cloud such as: DynamoDB, Lambda, SNS and SQS. Additionally, to simplify the use of AWS managed services, we…

In this project, we will use LocalStack to locally simulate some services provided by AWS Cloud such as OpenSearch, S3, and Secrets Manager. Additionally, to simplify the use of AWS managed service…