Mutation Testing en

Are you tired of dealing with unreliable test suites that fail to catch bugs and slow down your development process? Mutation testing is the solution you've been looking for! This powerful technique can help you evaluate the reliability of your tests, identify weaknesses in your code, and ultimately reduce the risk of bugs in your software.

In this talk, you'll learn how to apply mutation testing to projects with Kotlin and Gradle and take advantage of its many benefits. We'll explore real-world examples of how mutation testing has been used to improve the reliability of server-side APIs and streamline continuous integration pipelines. By the end of this talk, you'll have a powerful new tool in your testing toolbox that will help you write more reliable, efficient code.

What could possible go wrong? en

At conferences, we tend to focus on success stories and how we accomplish something. These projects are great successes, and although they’re inspirational, we forget about the failures we find during the journey, which can be powerful sources of learning and growth.

This is the story of a failure that could have been avoided. The journey was plagued with monsters such as synchronous and asynchronous communication between services, unexpected production problems, and more. We will reflect on how we tackled these challenges and the lessons learned that shaped us for future projects.

Join me on this trip about embracing failures as an integral part of success.

I deliver this session in English at DevopsBcn 2023 https://www.youtube.com/watch?v=uCO57VH6t_o

A modern testing tale en

Do you think AI will free us from the heavy burden of doing unit tests?

It may seem contradictory, but the more technology advances, the more necessary it is to revisit the fundamentals.

That's what we'll do in this talk, we'll take a walk through basic concepts of unit tests with topics such as What is the unit in a unit test? how many unit tests are enough? how can I ensure the test suite is reliable?

Also, clarify whether this effort is a thing of the past and whether developers can focus solely on creating new things while another system tests them.

First public delivery at BuildStuff 2024

Workshop: ¿Podemos construir una API solo con Kotlin? es

Kotlin lleva desde 2016 entre nosotros y, además de popularizarse para desarrollo Android, cada vez son más las empresas que apuestan por este lenguaje en el backend, entre otras cosas porque es compatible con todo el ecosistema de la JVM.
Han cambiado muchas cosas desde que Kotlin empezó y, a día de hoy, tenemos muchas librerias creadas exclusivamente para este lenguaje de programación. En este taller vamos a trabajar en una API utilizandolas.

El taller esta dirigido a personas con conocimientos en desarrollo de APIs, idealmente si tienen algo de experiencia con el ecosistema de la JVM les será más fácil pero se desarrollará de forma que personas con otra experiencia puedan seguirlo sin problema.

When Microservices Go South: Lessons Learned from Production Mistakes en

Microservices can bring significant advantages, but when not approached with care, they often lead to operational chaos. In this talk, I’ll highlight four common mistakes from real-world production experiences:
* creating microservices that are too small
* designing services that depend synchronously on one another
* building microservices as mere proxies for other services
* relying solely on microservices to solve performance issues
For each of these mistakes, I’ll share how they can quickly escalate into bigger challenges and propose my practical strategies to avoid them.