The best talks of Madrid 2023 Conference

Description:
Cascading Style Sheets (CSS) is cornerstone web technology which enables beautiful web pages across a range of devices. CSS was first proposed by Håkon Wium Lie while working with Tim Berners-Lee at CERN in 1994. Since then, CSS has added many features, and most of the information you read today will be presented by a CSS rendering engine. The exception may be paper-based books, magazines and newspapers. But this may be about to change as CSS in implemented by an creasing number of print-centric rendering engines. During the talk, you will be challenged to write a book in HTML and CSS.

Description:
This is not the Java we used to know. It's fast as lightning, light as a feather, knows all languages! How is that possible? We are speaking about GraalVM, the (not so new) open source virtual machine that is revolutionizing the way we run applications, small and big, based on the Java platform and ecosystem. The session will start with a short introduction to GraalVM architecture and its main characteristics. After the introduction, the session will focus on the differences of JIT vs AOT compilation, and the generation of native images, and a recommended workflow to work with native images and containers. The presentation focuses on live coding and demoing the main features and the native image workflow, and hence people attending should expect fewer slides and lots of code and commands.

Description:
Es 2023 y ya hemos dado por sentado que tenemos que testear nuestras aplicaciones. Escribimos test unitarios sin problemas y somos relativamente felices. Pero ¿qué ocurre con los tests de integración? ¿Cómo podemos testear con seguridad los diferentes servicios que utilizamos en nuestras aplicaciones Spring? Testcontainers se integra de manera sencilla y transparente con Spring Boot para ofrecer una experiencia similar a los tests unitarios pero escribiendo tests de integración con servicios reales ejecutados en contenedores: Kafka, Postgresql, MySql, Elasticsearch y cualquier cosa que se pueda ejecutar en Docker. En esta charla aprenderás cómo utilizar Testcontainers en tus tests de Spring Boot sin sacrificar la velocidad en tu ciclo de desarrollo y aprovechar todo el potencial que ofrece.

Description:
A veces los ingenieros caemos en la tentación de elegir grandes soluciones para pequeños problemas. Creo que nos pasa porque solemos aprender con la misma aproximación: usando grandes herramientas especializadas que ofuscan lo que hay debajo, la esencia. No quiero de decir que éstas no sean geniales y necesarias, pero un ingeniero de pro debería empezar más abajo, tocando las las tripas de sus bestias. Os propongo prescindir del arrastrar y solar y ver hasta donde llagamos desentrañando MQTT sólo con scripts de Bash y nada mas allá de lo que podemos entener sin mucho esfuerzo. Por diversión, sí, y por la necesidad de entender y explicar desde la sencillez. ZeroPPT y en directo (eso incluye que fallemos). Raspberry Pi, ESP8266, ESP32 y un tilín de LoRA. ¿Me acompañáis?

Description:
Las bases de datos relacionales de toda la vida se diseñaron hace muchos años en un mundo en el que los requisitos de proceso de datos eran muy diferentes. Bases de datos como Postgres, MySQL, SQLServer o SQLite siguen siendo herramientas fantásticas para trabajar con tus datos, pero... hay algunas cosas que no pueden hacer "bien". En esta charla te explico, con queries concretas, algunas cosas que una BBDD orientada a documentos (MongoDB), una BBDD de grafos (Apache Tinkerpop o Neo4j), o una BBDD de series temporales (QuestDB) pueden hacer, y que serían más complicadas en una BBDD tradicional. No intentaré convencerte de que las RDBMS son el mal (son bastante cuquis), sino simplemente te enseñaré algunas cosas curiosas que te pueden venir bien para resolver problemas específicos.

Description:
The web is fast becoming the main means through which people interact with all sorts of technologies. With every new invention, users ask "but can it work with a browser?" With Web APIs, the answer is almost always yes; even to the question "can you fly a drone with a banana?" In this talk, I show the audience the power of APIs and discuss a few cool experimental APIs. I do this by taking them through on a journey through my experience of trying to hack a drone and fly it with a banana. If you're interested in all things web, custom controllers, Bluetooth technology and accelerometer-based controls or if you just like fruit and seeing silly applications of technology, this talk is for you.

Description:
The collective frustration about CSS is through the roof. From centering things to magic browser-specific hacks, you either have that “CSS gene” or you don’t have it. Developers enjoying coding with CSS seems to be the exception to the rule. But fear not! This is not inevitable. Through my experience of teaching CSS to dozens of developers during the last 5 years, I developed a mental model that helped me understand this CSS issue and how to overcome it. In this talk, we’ll go over: where does the CSS frustration stems from actionnable tips & tricks to level up your CSS skills how to build the correct mental models to integrate any complex design At the end, you might even make peace with CSS and start to love it!

Description:
This talk will focus on how to turn awareness of accessibility issues into actionable steps to make a real difference on the web. We will discuss how to develop expertise in accessibility, how to perform accessibility testing, how to learn to use a screen reader, and how to effectively work with people with disabilities. We will explore how to leverage ARIA and WCAG for compliance, and how to use them to create an inclusive and accessible web experience for all users. With practical advice and real-world examples, this talk will provide tools and resources to help make a meaningful contribution to the world of accessible web development.

Description:
Currently, we're seeing the rise of new frontend frameworks like Qwik, Astro, and SolidJS. This talk explores why they're attractive and teaches attendees practical skills they can use at work inspired by these tools. We also explore where React, Vue, and Angular stand in the middle of this.

Description:
When you publish your first HTTP API, you’re more focused on short-term issues than planning for the future. However, chances are you’ll be successful, and you’ll “hit the wall”. How do you evolve your API without breaking the contract with your existing users? In this talk, I’ll first show you some tips and tricks to achieve that: moving your endpoints, deprecating them, monitoring who’s using them, and letting users know about the new endpoints. The talk is demo-based, and I’ll use the Apache APISIX project for it.