Java / NLJUG

J-Fall 2022: Marit van Dijk – Keep your dependencies in check

If Log4Shell, Spring4Shell, etc. have taught us anything, it’s that we need to keep our dependencies up to date. But updating our applications can take a lot of time. How do we stay on top of that, while also continuing to deliver business value? Luckily, there are plenty of tools that can help us with […]

msmelt

December 4, 2022

20

J-Fall 2022: Alina Yurenko – Supercharge your Native Image applications 🚀

You’ve probably heard of GraalVM Native Image and how it is great for startup time & memory consumption, but do you know how to use it to the fullest in practice? In this session we’ll look at developing Native Image applications, optimizing their performance, working with metadata and configuration, and more!

msmelt

December 4, 2022

24

J-Fall 2022: Maurício Aniche – Effective Developer Testing: taking it to the next level

We all know by now how to write automated tests. But can we get better at it? For example, how can we make sure we go beyond “happy path testing” and create really strong test suites? Is code coverage a bad metric we should ignore, or can it actually help us? Should we go for […]

msmelt

December 4, 2022

20

J-Fall 2022: Jeroen Reijn – Ten things that improve the performance of your Java based AWS Lambda

More and more enterprise organizations are moving toward the Cloud or want to adopt a more cloud-native operating model. Adopting serverless compute services like AWS Lambda is high on developers’ wish lists. Most of these organizations use Java for their existing applications, but Java is known for its high cold start times and high memory […]

msmelt

December 4, 2022

22

J-Fall 2022: Berwout de Vries Robles – HTTP/3 and Reactive Streaming

At J-Fall 2019 I gave a musical demonstration to introduce people to HTTP/2 and Reactive Streaming. To do that I developed an application that turns the crowd into my personal orchestra. Now it is 3 years later and HTTP/3 is nearing mainstream adoption! In this talk I will go into the updates in HTTP/3 and […]

msmelt

December 4, 2022

11

J-Fall 2022: Jakob Löhnertz – Dekompiled

Most people run their Kotlin code on the Java Virtual Machine (JVM). But did you ever wonder about how Kotlin can be so concise, clean, and expressive to read and write compared to Java, while in the end it will just be compiled to JVM bytecode nonetheless? There must be quite some heavy lifting going […]

msmelt

December 4, 2022

18

J-Fall 2022: Bonnie Nti – Using Data Orchestration for speed, reliability and real-time content

Having multiple subsystems that hold data might seem like a great way to divide responsibility and an easy way to maintain data. It does make it difficult to expose the data to a single entity such as a website. It is even more difficult to expose said data to multiple websites owned by different entities. […]

msmelt

December 4, 2022

22

J-Fall 2022: Kelly Jille – Be ‘Mr. Miyagi’ or find one! A talk about the power of mentoring

Mr. Who? Besides one of my childhood heroes, Mr. Miyagi is a fictional karate master from Okinawa, Japan, in the movie serie ‘The Karate Kid’. He was the karate mentor of several people and made them worthy champions. I wanted that too! So began my own karate journey with my own sensei (mentor). Later, I […]

msmelt

December 4, 2022

18

J-Fall 2022: Steffan Norberhuis – A practical guide to designing your AWS Architecture

AWS has a huge product catalog, resulting in information overload when you try to begin. How do you know where to start? I will take you on a step-by-step journey on how I approach AWS Architecture. In every step, I will show you the necessary considerations, how to make decisions about your design, and back […]

msmelt

December 4, 2022

16

J-Fall 2022: Bert Jan Schrijver & Brian Vermeer – J-FALL Official Opening

The grand opening of J-Fall 2022 by the NLJUG board.

msmelt

December 4, 2022

14