SESSION ABSTRACTS

19:00 Cloud Chaos and Microservices Mayhem

The cloud is just someone else’s data center, but it has fundamentally changed how we design software and what we expect from our platforms. Our applications have gotten bigger, more distributed, and more complicated, and there are whole new categories of mistakes we can make. Some things that were a good idea ten years ago turn out to be a terrible idea in the cloud; and what used to be ‘good enough’ for testing really isn’t anymore. Managing microservices architecture demands a lot of us, to ensure observability, operational resiliency, and organisational agility.

With a focus on Java, this talk will introduce some of the new tools, patterns, and best practices for modern distributed application development. It also gives a tour of some of the most painful anti-patterns Holly has seen as a cloud consultant.

20:15 Writing Greener Java Applications

The code we write has a climate impact. But how big is that impact? How do we measure it? How do we reduce it? Is the cloud helping? What’s going on with Virginia? Are we still allowed to do CI/CD? Will native compilation save us? Is Java even a good choice anymore?

This talk discusses some of the trade-offs for a modern software developer, and provides a roadmap to figuring out the right thing.

Disclosure: Holly works on Quarkus. Along the way, she will talk about Quarkus sustainability measurements they’ve been doing … but it’s ok, because she promises that the Quarkus carbon data is exciting and interesting.

About Holly Cummins Holly Cummins is a Senior Principal Software Engineer on the Red Hat Quarkus team. Before joining Red Hat, Holly was a long time IBMer. In her time at IBM, Holly has been a full-stack javascript developer, a WebSphere Liberty build architect, a client-facing consultant in the IBM Garage, a JVM performance engineer, and an innovation leader. Holly led the developer community in the IBM Garage for several years and became a bit of a methods geek. During her time in the IBM Garage, Holly led projects for enormous banks, tiny startups, and everything in between.

Before joining the IBM Garage, she was Delivery Lead for the WebSphere Liberty Profile (now Open Liberty).

Holly, an Oracle Java Champion, IBM Q Ambassador, and JavaOne Rock Star, co-authored Manning’s Enterprise OSGi in Action. She is regular keynote speaker and has spoken at KubeCon (keynote), GOTO, JavaOne, Devoxx, Sonar+D, JavaZone, JFokus, The ServerSide Java Symposium, GOTO, JAX London, QCon, GeeCon, and the Great Indian Developer Summit, and now, the Dublin Java User Group!

Find Holly on Twitter @holly_cummins

About the Oracle Dublin Java User Group

The Oracle Dublin Java User Group, aka DubJUG, is Ireland's oldest JUG serving Java developers in Ireland. Since 2006, the Group has been bringing Java Champions, Java One Rock Stars, and Duke Award winners to Dublin for the benefit of our community of Java software professionals. Oracle is the current Headline Partner.

To be among the first to hear about our Java events subscribe to our event notifications or waiting list above.

Aside from our website DubJUG.org, we can also be found on your favourite social networks. LinkedIn / Facebook / Twitter

DubJUG Partners

Our headline partner, Oracle is committed to offering choice, flexibility and a lower cost of computing for customers, and demonstrate this commitment by investing significant resources in developing, testing, optimizing, and supporting a wide variety of open source technologies.

For further details on some of the open source technologies in Oracle Cloud please visit developer.oracle.com/opensource

Oracle Cloud is the industry’s broadest and most integrated public cloud. It offers best-in-class services across software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS), and even lets you put Oracle Cloud in your own data centre. Oracle Cloud helps organisations drive innovation and business transformation by increasing business agility, lowering costs, and reducing IT complexity.

Website: Oracle / Twitter: Oracle_UKI

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Version 1 is a trusted technology partner to major domestic and international customers across all industry sectors in the UK and Ireland. Their Java practice has grown to over 120 people over the last few years, and continues to grow. Many of their Java customers use a significant amount of open-source tools and technologies, and therefore Version 1 work with the community to hear other Java success stories, learn more about people’s experiences, and bring in Java experts and champions to get the latest on what’s going on in that space.

Website: Version1.com / Twitter: Version1Tweets

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Stackand.Co have been enriching the professional lives of Java software professionals for over 20 years experience. They have helped many great people elevate their careers, and local companies acquire with the best developers for their teams.

Perhaps they can do the same for you working with companies like this one?

Website: Stackand.Co / Twitter: StackanddotCo

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Viasat, a global team of fearless innovators finding better ways to develop the ultimate global communications network to impact people's lives anywhere they are—on the ground, in the air or at sea.

Viasat Ireland develops in-flight experience products and platforms for the global aviation industry, pushing the boundaries of what’s possible across the entire travel experience by developing entertainment, operational and connectivity solutions that transform travel for airlines and passengers by enhancing engagement, loyalty and performance.

Website: Careers.Viasat.com / Twitter: @ViasatAviation

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Global Payments Inc makes it easy for business to accept payments online, on mobile and in-app blending global coverage, local expertise and the best possible service to help drive business growth. Headquarted in Atlanta, they have a thriving technology division based on Sir John Rogerson's Quay.

Website: GlobalPaymentsInc.com / Twitter: GlobalPayInc

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Teckro builds mobile first, Cloud based SaaS Technology solutions, used by the global pharmaceutical companies to change how they conduct clinical Trials.

Using the latest technology including Kotlin, Spring Boot, REST APIs, React, ES6, Swift, MySQL, Apache Kafka, Maven, Gradle, Cassandra, Git, Docker, Kubernetes, Helm, Datadog, AWS, Sonar and much more, Teckro’s makes a real difference globally. Quality of life is improved. In the end, lives will be saved.

Website: www.teckro.com/ / Twitter: @teckroofficial

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Equifax Technology Ireland is the Research and Development arm of global credit scoring organisation Equifax - it has recently opened a technology centre in the Bloodstone Building, Dublin 2.

Now looking for developers!

Website: Equifax.com / Twitter: Equifax

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GuruTeam delivers high end ICT learning, mentoring and consultancy services, in Ireland, the UK and worldwide. Their expert instructors formulate bespoke training to suit their clients and can deliver programmes on or offsite.

Website: GuruTeamIrl.com / Twitter: GuruTeamIreland

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Hazelcast delivers the System of Now™, an in-memory computing platform that empowers Global 2000 enterprises to deliver innovative, low-latency, data-centric applications

Website: Hazelcast.com.com / Twitter: @Hazelcast

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Technology companies JetBrains, Synchronoss, FINEOS, and Solvers also support our community - find out more about them here.

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Companies. If you would you like to discover the benefits of partnering with Ireland's longest serving and most active community group for Java developers, please get in touch here