Java / NLJUG

J-Fall 2021: Simon Ritter – AOT or JIT: Faster Startup or Faster Code?

Microservices have become a prevalent architectural approach to developing applications. Moving from a monolithic application to multiple container-based services has many advantages. One of the largest is dynamic scalability; spinning up and shutting down instances of services to adapt to dynamic loads is very cost-effective in a public cloud environment. For JVM-based applications, running in […]

msmelt

February 15, 2024

21

J-Fall 2021: Sander Mak – Streamlining large-scale Java development using Error Prone

Using static analysis to spot bugs in your code has become a staple of modern Java development. But what if we can take this one step further where, instead of just finding issues, we fix them automatically? And, what if we can do this not just for bug patterns but for any coding pattern you’d […]

msmelt

February 15, 2024

27

J-Fall 2021: Jeroen Benckhuijsen & Vincent van der Zijden – Using JFR for performance tuning

Time to dive in the Java Flight Recorder! Using practical examples and real-world use cases Rick and Vincent will show everything you need to know to start using JFR and JMC for performance tuning today. Expect an overview of what the JFR offers you and how it works. Of course with plenty of hands-on coding!

msmelt

February 15, 2024

23

J-Fall 2021: Maarten Mulders – Dapr: Dinosaur or Developer’s Dream?

Recently, the Dapr community released Dapr into the wild, aiming to simplify cloud-native application development. Dapr lets you abstract your distributed architecture from the underlying infrastructure that powers it. Forget about Kafka, RabbitMQ or any cloud-specific product: you’re talking with a pub/sub broker. Let Dapr take care of how it works. Want to switch later? […]

msmelt

February 15, 2024

18

J-Fall 2021: Nicolas Fränkel – A Change-Data-Capture use-case: designing an evergreen cache

When one’s app is challenged with poor performances, it’s easy to set up a cache in front of one’s SQL database. It doesn’t fix the root cause (e.g. bad schema design, bad SQL query, etc.) but it gets the job done. If the app is the only component that writes to the underlying database, it’s […]

msmelt

February 15, 2024

10

J-Fall 2021: Rudy De Busscher – How Class Data Sharing Can Speed up Your Jakarta EE App Startup

Full session title: How Class Data Sharing Can Speed up Your Jakarta EE Application Startup Java Byte code is OS independent, which means that your application’s startup takes more time than a native image. Using the Class Data Sharing functionality introduced in more recent versions of the JVM, you can prepare your application so that […]

msmelt

February 15, 2024

23

J-Fall 2021: Ana-Maria Mihalceanu – Cloud Native resiliency patterns from the ground up

“Delay is the deadliest form of denial.” C. Northcote Parkinson We live in times when an application or service lag of even 2 seconds can be too long. Building a reliable Cloud Native distributed system means preventing failures and minimizing their effects to keep the system stable. Join me to explore graceful recovery from unexpected […]

msmelt

February 14, 2024

14

J-Spring 2021: Melissa McKay – DevOps Tools for Java Developers – Spring Cleaning

Spring is a great time to clean out the cobwebs from your development processes. It’s time to take a step back and review your regular workflow. Are there things that can be improved? Are there processes that you know are inefficient but haven’t come up with a way to improve them? Join Melissa in a […]

msmelt

February 2, 2024

23

J-Spring 2021: Victor Rentea – Hibernate + Spring: Unleash the Magic

The most popular Java Frameworks today: Hibernate and Spring. Both rely on magic to make things *seem* simple to novices, but both also hide dark tenets that only the initiate will discover. This live-coding session will reveal the magic at their integration points, discussing transaction propagation, Spring Data Jpa repositories, audit support, proxies, plus several […]

msmelt

February 2, 2024

29

J-Spring 2021: Jeroen Resoort – Serverless Java on Steroids with Knative, Micronaut & GraalVM

Micronaut and GraalVM enable us to build lightweight Java applications. KNative is a Kubernetes-based platform for deploying serverless workloads. This combination of frameworks makes it particularly easy for developers to get started with Serverless Java. In this talk we will develop several microservices with the Micronaut application framework, build them with GraalVM and deploy them […]

msmelt

February 2, 2024

33