For this session, we have the pleasure to welcome 2 speakers on 2 very interesting topics.
Note that this event is located in Computer Futures premises as they are kindly sponsoring the event, providing you with food 🌮and drinks 🍹 so you won't starve 👍
Abstract 1: "Fun with near real-time data streaming"
While “software is eating the world”, those who are able to best manage the huge mass of data will emerge out on the top.
The batch processing model has been faithfully serving us for decades. However, it might have reached the end of its usefulness for all but some very specific use-cases. As the pace of businesses increases, most of the time, decision makers prefer slightly wrong data sooner, than 100% accurate data later. Stream processing - or data streaming - exactly matches this usage: instead of managing the entire bulk of data, manage pieces of them as soon as they become available.
In this talk, I’ll define the context in which the old batch processing model was born, the reasons that are behind the new stream processing one, how they compare, what are their pros and cons, and a list of existing technologies implementing the latter with their most prominent characteristics. I’ll conclude by describing in detail one possible use-case of data streaming that is not possible with batches: display in (near) real-time all trains in Switzerland and their position on a map. I’ll go through the all the requirements and the design. Finally, using an OpenData endpoint and the Hazelcast platform, I’ll try to impress attendees with a working demo implementation of it.
Nicolas Frankel is a Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with focused interests like Rich Internet Applications, Testing, CI/CD and DevOps. Currently working for Hazelcast. Also double as a teacher in universities and higher education schools, a trainer and triples as a book author.
Abstract 2: "Advanced testing in action on a Java project"
In 2019 we're all used to writing automated tests in Java projects. It's now time to move up the chain and learn how to implement more complex type of testing.
This talk will demonstrate advanced testing practices used by the XWiki open source project (http://xwiki.org), and using Java, Maven, Docker and Jenkins and more:
* Testing for backward compatibility with Revapi and an associated strategy
* Testing for coverage with Jacoco and defining a viable strategy for slowing improving the situation
* Testing the quality of your tests with Descartes Mutation testing
* Automatically enriching your test suite with DSpot
* Testing various configurations with Docker containers and Jenkins
Vincent Massol is the CTO of XWiki SAS and an active committer of the XWiki open source project. Before being paid to work on open source he spent over 10 years working nights and week ends having fun on various open source projects (committer on Apache Maven, creator of Apache Cactus and Codehaus Cargo to name a few).
Vincent also co-authored 3 books: JUnit in Action , Maven: A Developer's Notebook and Better Builds with Maven. He's a regular speaker at IT and Java conferences and also a member of LesCastCodeurs podcast, a French podcast focusing on news in the Java world at large.
Vincent lives in the countryside in France, enjoying life with his 3 boys Pierre-Olivier, Jean and Paul. When not watching his lawnmower robot do its work, he likes playing doing sport (Tennis, Ping Pong, Running, Gym, Yoga, ...).
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