NLJUG – Nederlandse Java User Group NLJUG – de Nederlandse Java User Group – is opgericht in 2003. De NLJUG verenigt software ontwikkelaars, architecten, ICT managers, studenten, new media developers en haar businesspartners met algemene interesse in alle aspecten van Java Technology.
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Webinar: Introducing Subscription Queries
Presented by Frans van Buul
Queries are, next to Commands and Events, a fundamental building block of any CQRS/Event Sourcing based application. As such, they’re supported in Axon Framework since 3.1 by means of a QueryBus and @QueryHandler methods. But something has been missing so far: these queries were executed in a simple request/response fashion, whereas in reality many modern applications are showing live, asynchronously updated data to their users.
Axon Framework 3.3 has introduced subscription queries to bridge this gap in a truly elegant manner.
In this short, all live-coding webinar, we’ll take an existing Axon application with a GUI featuring synchronous, user initiated data refreshes, and transform that into a live updated system using the new subscription query functionality.
A must-see for all Axon users wanting to get the most out of Axon’s new features!
20 minutes for webinar, 10 minutes for Q&A