Category: spring

Posts in spring

Hexagonal Architecture on Spring Boot

In this article, I’ll show how to implement a Spring Boot application using Hexagonal Architecture.

written February 1, 2020 in architecture, hexagonal, java, spring, spring-boot Read on →

Using UUID on Spring Data JPA Entities

In this article I’ll explore how to model a [JPA Entity][1] using an [UUID][2] as Primary Key working with [Spring Data JPA.][3]

written November 5, 2018 in data, hibernate, jpa, kotlin, spring, uuid Read on →

Reactive GraphQL Subscriptions From Kafka

In this post I’ll be exploring how to implement [GraphQL subscriptions][1] reactively on a Spring Boot application using [Kafka][2].

written October 23, 2018 in boot, graphql, kafka, kotlin, reactive, reactor, spring, subscriptions Read on →

Random Thoughts on Using Gradle With Kotlin DSL

Since Gradle 3.0 you can [write your build scripts using Kotlin instead of Groovy][1]. I was curious, so I decided to give it a try. Here are my thoughts on the process.

written August 28, 2018 in gradle, kotlin, kotlin-dsl, multi-module, spring Read on →

Oracle, JPA and the Mystery of the String That Was Null

This is the story of how Oracle DB was messing up Kotlin’s type system, and what I did to fix it.

written June 23, 2018 in h2, jpa, kotlin, npe, nulls, oracle, oracle-db, spring, spring-data Read on →

Spring Functional Routing

This post is about the clever tricks you can pull with Spring new functional routing and it’s Kotlin DSL.

written May 20, 2018 in dsl, functional, kotlin, router, routing, spring Read on →