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description=The primary focus of The Belgium Java User Group (founded in 1997 by Stephan Janssen) is to inform our members about the Java ecosystem.We regularly organise free sessions for Java and JVM interested developers, devops and teamleads to socialize, learn and inspire.Interested to contribute and partic;

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belgian java user group meetup skip to content homepage belgian java user group 4 8 326 ratings brussels be 1 866 members share about events members photos discussions about us the primary focus of the belgium java user group founded in 1997 by stephan janssen is to inform our members about the java ecosystem we regularly organise free sessions for java and jvm interested developers devops and teamleads to socialize learn and inspire interested to contribute and participate in our vibrant and independent java community here in belgium reach out to the team we are always looking for new speakers and meetup hosts upcoming events 1 see all event sourcing and jcast wed may 27 6 00 pm cest inetum gent gaston crommenlaan 4 gent be bejug is back in may and we re heading to ghent this time a big thank you to inetum for hosting us again we have two great speakers ready to share some knowledge hannes lowette is going to talk to us about event sourcing and jcast podcaster maarten casteels is going to tell us more about his java podcast journey come join us for this next event schedule 18 00 doors open food and drinks 18 45 intro and bejug updates 18 50 talk 1 19 35 little break 19 45 talk 2 20 30 mingling drinks topics event sourcing dealing with an eventful past at a certain level of abstraction all complex systems are message passing systems grady booch in software we are often passing messages around between components services and even systems we do so in synchronous and asynchronous ways the second half of grady s tweet talks about how societies use memes to pass information across time in software we use the state of our system to do the same everything we write to storage is in essence a message for our future system if we use event sourcing as our persistence pattern we are making this message passing in time much more explicit in our software and there are other benefits too for instance we are sacrificing a lot less information compared to classical relational databases we also enable point in time capabilities for our entities and we are much more likely to be able to fulfill future business requests based on old data does that sound complex it doesn t have to be in this talk i will given an introduction to what event sourcing is how to fit it into a cqrs architecture and what design patterns you can use to unlock its full potential about hannes hannes is a developer a coach and a father of 3 in software development he has always had a passion for performance databases distributed systems and large scale applications he s always weighing every solution s benefits against its drawbacks reducing friction where possible as a coach he is enthusiastic about knowledge sharing personal growth and building careers building a company culture around learning is what gets him out of bed in his free time when he s not building lego castles with his kids he likes to spend time building guitars playing chess mountain biking and doing all round geeky stuff you can often find him on stage at the conference afterparty especially as the guitarist of dylan beattie the linebreakers when the spark shows up don t ignore it most ideas don t fail they just never get started i had been thinking about starting a podcast for a long time but like many ideas it stayed in the background until the spark showed up when oumaima and viktor brought up the idea for jcast something clicked we didn t overanalyze it we didn t wait for the perfect setup we just went for it in this talk i ll share how that one decision turned into something much bigger than expected not because we had a perfect plan but because we followed the energy accepted the trade offs and kept going jcast is the story but the lesson is broader sometimes the most important thing you can do is recognize the moment and act on it about maarten maarten casteels is a java developer passionate about clean code tdd and continuous learning he is one of the co creators of jcast a podcast he started with oumaima and viktor driven by curiosity conversation and a willingness to follow a spark when it appears additional notes this meetup includes food please keep your rsvp status up to date so we do not waste any of our food some pictures might be made if you feel uncomfortable about this please mention this to the organizers or anyone with a camera 50 attendees past events 51 see all finding java memory leaks ai agentic setup and fraude detection tue mar 24 6 00 pm cet tour taxis picardstraat 7 brussels be 48 attendees green ai with jobrunr finding the spark wed feb 18 6 00 pm cet ae interleuvenlaan 76 belgium be 34 attendees group links organizers tom cools and 3 others message members 1 866 see all find us also at x related topics java open source software development new technology web technology web development computer programming android development operating systems technology html5 organizers tom cools and 3 others message members 1 866 see all the people platform create your own meetup group start a new group your account sign up log in help discover groups events topics cities online events local guides make friends sitemap meetup about blog meetup pro careers apps podcast follow us get the app download on google play download on app store 2026 bending spoons us inc terms of service privacy policy cookie policy license attribution help made with by bending spoons