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J-Spring 2019: Martijn Jansen – Is GraphQL the new REST?

According to many developers, GraphQL is the solution for everything that is wrong with REST. But is this really the case? In this talk I will walk you through GraphQL and for which cause I used this technique. Is it really the new REST? Bio Martijn Martijn Jansen is currently working at the Rabobank for […]

J-Spring 2019 Keynote: Wouter Oet – Keynote: A life of working and learning in IT: Challenge accepted!

In an ever changing world, developers sometimes struggle to keep up with all the changes happening. There are just too many releases of languages, frameworks and libraries to keep up with. Not to mention the broadening of our profession. Pipelines, runtimes, security and Ops are also part of it. We are going to face that […]

J-Spring 2019: Berwout de Vries Robles – Impromptu Orchestra with HTTP2 and Reactive Streams

With the introduction of HTTP/2 in 2015, Server Sent Events have received a new life as Reactive Streams. In this talk we will look into how these technologies work. We will look at how and why HTTP/2 came to be. I will show you what you need to do to make practical use of HTTP/2. […]

J-Spring 2019: Emond Papegaaij – Oauth2 demystified

Almost every developer will have to face this at some point in his or her career: authorization with OAuth2. It doesn’t matter if you build mobile apps, web applications or even develop for embedded systems in the IoT, everybody seems to use OAuth2 nowadays. But how does this protocol work and what’s up with all […]

J-Spring 2019: Bert Ertman – Are We Really Cloud-Native?

As Java developers we are used to adjusting ourselves in heterogeneous environments and so over the last ten years or so we gained experience with PaaS, VMs, Containers, DevOps, Continuous Integration and Microservices Architectures. Now a new phenomenon arises: building greenfield applications with the intent of using agile application development and architecting specifically for the […]

J-Spring 2019: Jan Ouwens – Java from a Parallel universe

Do you get excited about Java when you’re at a conference, learning about cool new features and tools to try? Do you get sad the next day, when you’re back at work building enterprise applications in an ancient version of Java? You’re not alone. In this talk, we will explore what Java looks like in […]

J-Spring 2019: Brian Vermeer & Paulien van Alst – My Kotlin is better than your Java

TLDR: The big discussion: Kotlin or Java, to migrate or not to migrate and why… The world of languages on the JVM has seen alternatives to Java come and go. Kotlin is probably the most popular one at this moment. Although Java is still one of the most commonly used programming languages, Kotlin seems to […]

J-Spring 2019: Onno Schellekens & Barry Lagerweij – Keynote: Can we use mobile technology to leapfrog universal health for developing countries?

Mobile technology is changing the world at a speed nobody can imagine. Industrial activities are being revolutionized. There is a real opportunity to use mobile technology to leapfrog healthcare in developing countries. Bio Onno Onno Schellekens is voorzitter van het Joep Lange Instituut en algemeen directeur van PharmAccess. Hij is medeoprichter van het Investment Fund […]

J-Spring 2019: Michel Schudel – Cryptography 101 for Java developers

So you’re logging in to your favorite crypto currency exchange over https using a username and password, executing some transactions, and you’re not at all surprised that, security wise, everything’s hunky dory… Ever wondered about the amount of cryptography begin used here? No? Let’s dive into the key concepts of cryptography then, and see how […]

J-Spring 2019: Brian Vermeer – Live exploiting your open source dependencies

Today, almost all software heavily relies on the use of third-party dependencies. While open source modules are undoubtedly awesome, they also represent an undeniable and massive risk. You’re introducing someone else’s code into your system, often with little or no scrutiny. Including the wrong package can introduce severe vulnerabilities, exposing your application and your user’s […]