Java / NLJUG

0

J-Fall 2019: Simone Stapels – Highly secured APIs: insights into OAuth 2.0

OAuth secures APIs with a temporary, encrypted access token. This is much more secure than basic authorization, but also harder to implement. Because: which flow should be used in which situation? What is the difference between authorization and authentication? And are there any implementation constraints that you didn’t even think about? This talk will explain […]

Martijn Broeders

January 31, 2020

83

0

J-Fall 2019: Wessel Boelen – Introduction to Prometheus with practical tips

The goal of the session is to get the audience more familiar with monitoring and alerting using Prometheus. In a Cloud environment running multiple microservices monitoring and alerting is needed more than before. Prometheus is becoming the de facto standard. Together with Micrometer it provides a powerful tool to see how your application is behaving […]

Martijn Broeders

January 31, 2020

66

0

J-Fall 2019: Pascal Snippen – From a traditional application to a cost efficient cloud architecture

De cloud is hot en veel organisaties zijn hier ook mee bezig. Maar wat betekent het als je een applicatie landschap gaat migreren naar de cloud. Het aantal services wat AWS en Azure biedt is talloos en voor een framework bieden ze verschillende oplossingen er zal dus een keuze in gemaakt moeten worden van welke […]

Martijn Broeders

January 31, 2020

39

0

J-Fall 2019: Ray Tsang & Robert Scholte – Surviving Dependency Hell

Dependency conflicts come in many different forms and have different impacts on your applications. This presentation examines common causes of a dependency conflict, how you can mitigate it as a library developer, and how end users can resolve it. Join this session to see common issues Ray has observed from working with customers, and Robert’s […]

Martijn Broeders

January 31, 2020

131

0

J-Fall 2019: William Bakker – From Iterator to Spliterator

Good chance that you have worked with the Java Streams API. It is quite easy to consume Stream objects. What if you want to produce your own Stream? Is List.stream().map().collect(toList()) an antipattern? How to deal with IO? How can you transform your service and your API’s using Stream? I will show some best practices on […]

Martijn Broeders

January 31, 2020

51

0

J-Fall 2019: Erik Hooijmeijer – Decompiling Kotlin

While my colleagues revelled in Kotlin’s new features, I was curious how exactly these features are achieved on the JVM. So I spent some time reading byte code and decompiling Kotlin into Java with sometimes hilarious results 🙂 In this presentation a take some example code in Kotlin, compile it and then decompile it with […]

Martijn Broeders

January 31, 2020

49

0

J-Fall 2019: Alex Soto – Supersonic, Subatomic Java with Quarkus

Java was born in the mid-90s, the era of TLC and Boyz II Men, long before the rise of Linux server virtualization and the Linux container. We took great pride in running Java applications for weeks if not months without restarts and Java assumed the whole computer belonged to itself, that it could consume all […]

Martijn Broeders

January 31, 2020

58

0

J-Fall 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… The amount of cryptography to make all this happen is staggering. In order to appreciate and understand what goes on under the hood, […]

Martijn Broeders

January 31, 2020

47

0

J-Fall 2019: Maarten Smeets – Performance of Microservices on Different JVMs

A lot is happening in the world of JVMs. Oracle changed its support policy roadmap for the Oracle JDK. GraalVM has been open sourced by Oracle. AdoptOpenJDK provides binaries and is supported by (among others) Azul Systems, IBM and Microsoft. Large software vendors provide their own supported OpenJDK distributions such as Amazon (Coretto), RedHat and […]

Martijn Broeders

January 31, 2020

46

0

J-Fall 2019: Lucas Jellema & Adnan Drina – How and why GraalVM is quickly becoming relevant for you

Starting a Java application as fast as any executable with a memory footprint rivaling the most lightweight runtime engines is quickly becoming a reality, through Graal VM and ahead of time compilation. This in turn is a major boost for using Java for microservice and especially serverless scenarios. For a long time GraalVM seemed merely […]

Martijn Broeders

January 31, 2020

143