I provide a consistent methodology for identifying whether you have a heap memory leak, analysing the memory to identify the leak, and determining the cause. I focus on heap leaks, which are the most common Java memory leaks. Yes, this talk will make you a guru.

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Developers have a tendency to focus on low-level implementations to handle concurrency, locks, lock-free algorithms, compare-and-set etc. But you shouldn’t jump into any implementation without first deciding which high-level concurrency control pattern is right for the problem. To help you make the right decision, I cover the four common concurrency control patterns that let you safely update shared mutable state: pessimistic locking, optimistic transactions, queue to a single thread, and partitioning the data.

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Ever wondered what makes a cloud-native application “cloud-native”? Ever wondered what the unique challenges are and how best to address them on fully-open Java technologies? In this workshop, you’ll learn what it means to be cloud-native and how that impacts application development. You’ll learn about Eclipse MicroProfile, an industry collaboration defining technologies for the development and management of cloud-native microservices. With a full set of MicroProfile workshop modules available to you, you’ll be able to start with the basics of REST services and progress to more advanced topics, or you can jump right in and develop secure, fault tolerant, configurable and monitorable microservices, plus utilising OpenJ9 for memory reduction.

Once, long ago, we we looked upon serialisation as an important part of Java. As the years past we began to recognise the flaws in its design and sighed. Today we realise that the story of serialisation has become a dark and twisted tale.

In this session see why we still need serialisation, how the inbuilt design is fatally flawed and how it is being exploited and used against us. Learn how to work against the dark arts railed against us and understand how even the alternative forms of Java serialisation can still be open to attack.
Does this tale have a happy ending? Can goodness prevail and can you make your application safe from Java serialisation weaknesses?

Only your can decide.

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There’s a ton of theory available on DDD, event sourcing and CQRS but how does one get started in terms of code? Moreover, when we have a tight deadline, one wants to solely focus on solving core business problems rather than getting caught up by plumbing non-functional concerns such as snapshotting, command handling, guaranteed events delivery to the right event listeners, events replaying, persisting aggregate, etc. In this talk, we will build an application to see how Axon Framework supports CQRS and Event sourcing by providing a robust implementation for fundamental building blocks such as event dispatching mechanism, aggregates, repositories, event sourcing, Domain Events, etc.to build scalable, extensible and maintainable applications. Furthermore, Axon provides extensive support for Spring which means much of the configuration can be avoided by leveraging Spring’s annotation support.

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