Java / NLJUG

J-Spring 2024: I won’t let Java confuse you! – Nataliia Dziubenko

Sometimes the code that seems clear can turn out to be quite deceiving, even in some really basic concepts. In such situations, it’s good to question whether that code doesn’t smell… Either way, it’s our responsibility to know about the cases where Java can be confusing and why. In this session we will peek deeper […]

msmelt

August 22, 2024

22

J-Spring 2024: Reading Code – Marit van Dijk

As developers, we spend a lot of time learning to write code, while spending little to no time learning to read code. Meanwhile, we often spend more time reading code than actually writing it. Shouldn’t we be spending at least the same amount of time and effort improving this skill? Deliberate practice can help us […]

msmelt

August 22, 2024

16

J-Spring 2024: Future-Proofing Java: The Art of Crafting Resilient APIs – Steve Poole

Designing APIs is an art, a creative exercise. Getting it right for right now is hard, getting it right for tomorrow is even harder. This talk explores designing resilient Java APIs for upward compatibility, consumability, and flexibility. We’ll discuss the practicalities of ideas like encapsulation and inheritance, look at wider elements like consistency, and effective […]

msmelt

August 22, 2024

15

J-Spring 2024: Making your own Testcontainers module for fun and profit! – Oleg Šelajev

Testcontainers libraries are a de-facto standard for integration testing in the Java community. One of the reasons for its popularity is the ecosystem of the modules — pre-defined abstractions for creating containerized services for your tests in a single line of code. In this session, we’ll look at the architecture of Testcontainers modules and learn […]

msmelt

August 22, 2024

8

J-Spring 2024: Going serverless with Quarkus, GraalVM native images and AWS Lambda – Bert Jan Schrijver

  A conference app backend makes the ideal candidate for a serverless architecture: Almost no traffic during the year, and peak traffic during conference days. In this talk, I’ll show how I migrated the backend for the NLJUG conference app (used to rate talks for conferences with 1500+ attendees) from a traditional approach with Java […]

msmelt

August 22, 2024

14

J-Spring 2024: Revolutionising enterprise communication, Spring Kafka deep dive – Adis Pezo

  At Rabobank we use Kafka, a distributed event streaming platform designed to address complexities of real-time data processing at scale. In this session we will explain why Rabobank has chosen Kafka over other platforms, how it uses Axual and AVRO contracts. By example we will look how a landscape can be decouple by using […]

msmelt

August 22, 2024

15

J-Spring 2024: Mastering Java Performance: From Monitoring to Profiling – Lennart ten Wolde

This session builds on the principles discussed in the keynote and delves deeper into the hierarchy of performance bottlenecks in Java applications. We will address more complex examples of performance degradation in various systems such as frameworks, databases, and concurrency management. The focus is on the use of diagnostic tools and profiling techniques. These tools […]

msmelt

August 22, 2024

12

J-Spring 2024: Introduction to Quantum Computing – Yassin Asri

Having earned a bachelor in physics and a master in software engineering, my objective for this session is to deliver a complete presentation to what quantum computing is all about, get you excited on the topic and provide a starting point for exploring Java quantum programming. Quantum computing promises exponentially faster computation by leveraging the […]

msmelt

August 22, 2024

6

J-Spring 2024: The Kafka Consumer: An Unexpected Journey of Data Consumption – Danica Fine

Once your data is stored on your Apache Kafka® cluster, the next step is to consume that data and do something interesting with it. Enter: Kafka Consumers. We all know how to set up a Kafka Consumer to poll data… but do you know how a consumer fetches the data from the cluster? Let’s find […]

msmelt

August 21, 2024

11

J-Spring 2024: Seeing Through the Fog: Mastering Observability in Microservices – Sendil Kumar N

Seeing Through the Fog: Mastering Observability in Microservices In the dynamic world of microservices, maintaining visibility into application health can feel like navigating through a dense fog. This talk cuts through the confusion, equipping you with the tools and techniques to achieve comprehensive observability. And then unveil the fundamental components of observability, including metrics, logs, […]

msmelt

August 20, 2024

7