Rich Internet Applications

**Um was geht es dieses mal?** Dieses Mal haben wir zwei Talks für euch! **Performance und Portability in Data Analytics mit DuckDB & Co. - Niklas Niggemann** Moderne Data Teams kämpfen mit zwei Kernproblemen: Performance und Portability. Dieser Vortrag zeigt anhand umfassender Benchmarks von DuckDB, Polars und Pandas mit Datensätzen von wenigen Gigabyte bis zu mehreren Terabyte, wie Ausführungsmodelle, Dateiorganisation und Speicherverwaltung die Performance beeinflussen. DuckDB liefert konstant niedrigen Speicherverbrauch, Polars erreicht durch Parallelisierung hohe Geschwindigkeiten – doch sobald mehrere Engines „schnell genug" sind, zählt Flexibilität. Abschließend zeigen wir deswegen, wie Frameworks wie Ibis die analytische Logik von Engines entkoppeln und so lokale Entwicklung, Cloud-Deployment und Plattform-Migrationen ohne teure Neuentwicklungen ermöglichen. **Design Patterns - Wie sie dir helfen, ausdrucksstärkeren Code zu schreiben - Christian Ambach** Vor über 30 Jahren veröffentlichte die Gang-of-Four ihren Klassiker "Design Patterns. Elements of Reusable Object-Oriented Software". Viele der Muster erfreuen sich heute großer Beliebtheit und es sind eine Menge von Patterns dazugekommen, nicht nur auf Design-, sondern auch auf Architektur- und Organisationsebene. Wusstest Du, dass Du wahrscheinlich schon Design Patterns einsetzt, ohne es zu merken?In diesem Vortrag wird betrachtet, wie bekannte Frameworks und Bibliotheken – zum Beispiel das Spring Framework – auf Design Patterns setzen und wie die Teilnehmer diese Muster vielleicht schon ganz selbstverständlich in ihrem Code verwenden. Gemeinsam werfen wir einen Blick auf eine Auswahl von Design- und Architekturpatterns, entdecken Good und Bad-Practices und wie man Patterns gezielt einsetzen kann, um Code noch ausdrucksstärker zu machen. **Hybrides Setup!** Wir freuen uns, euch bei uns in den Räumen der codecentric AG in Dortmund willkommen zu heißen. Vor Ort versorgen wir euch mit Snacks und Getränken und freuen uns gleichzeitig über interessante Diskussionen und einen guten Austausch. Für alle, die es nicht zu uns ins Office schaffen, werden wir das Meetup Hybrid durchführen. Der Stream beginnt ca. 10 Minuten später, damit wir vor Ort ausreichend Möglichkeit für persönliches Kennenlernen haben. Den Live-Stream findet ihr auf dem [YouTube-Channel ](https://www.youtube.com/@codecentricAG)der codecentric AG. **Wichtig - Absage bitte rechtzeitig:** Wir bestellen das Essen bereits 3 Tage vor dem Meetup. Falls ihr doch verhindert sein solltet, bitten wir euch um eine rechtzeitige Absage. Das ist wichtig, damit wir nicht unnötig Essen verschwenden müssen. Vielen Dank für euer Verständnis! **Anreise:** Per Zug: Vom Dortmunder HBF sind es ca. 10 Minuten zu Fuß. Mit dem Auto: Rund um das Office gibt es einige Parkflächen, dazu befinden sich in dem Parkhaus der Thier-Galerie weitere Parkplätze.

Casemates is one of Luxembourg's English-speaking Toastmasters clubs - here you’ll find a supportive and friendly environment which will allow you to develop your communication skills, become a confident leader and have fun! Each meeting is clearly structured with three parts: improvised speaking on various topics, prepared speeches by members, and an evaluation part where all the speakers receive feedback. Members are holding the various roles necessary for the organisation - a different one at each meeting. You can come as a guest and see how it works for yourself - we guarantee that you will feel welcomed and will have fun in our learn-by-doing environment!

Les **Odoo Academy** sont des séries de formations gratuites d'une journée où les participants peuvent apprendre directement de nos experts expérimentés. Êtes-vous prêts à révolutionner la gestion de votre entreprise de service? Notre formation immersive vous guidera de la **création d'une offre à la gestion du projet**, en passant par **la facturation et les feuilles de temps**. —--------------------------------------------------------------------------- **Les informations pratiques :** **Où?** Odoo Luxembourg \| Rue de l’industrie\, 13 \| 8399 Koerich\, Luxembourg **Quand ?** Le 24 Mars 2026 de 9h à 17h **Inscription?** **[https://www.odoo.com/r/3Cq](https://www.odoo.com/r/3Cq)** **Prix ?** Gratuit ! Au plaisir de vous y voir nombreux et de vous rencontrer !

Dear Club Polyglotte members, Please note that we changed our online meetings from Skype to Teams. An installation of Teams is not necessary (see links at the bottom). The online meetings take place on Tuesdays at 19:00, unless otherwise indicated. CP English Club Polyglotte Luxembourg Community in Microsoft Teams with Pete from London on Tuesdays at 19:00 h: https://teams.live.com/l/community/FEA32nllYOKVkYfQA8?v=g1 CP German Club Polyglotte Luxembourg Community in Microsoft Teams with Margit on Tuesdays at 19:00 h: https://teams.live.com/l/community/FEAPmC0cP2yAknqqAw?v=g1 CP Italian Club Polyglotte Luxembourg Community in Microsoft Teams on Tuesdays at 20:30 h. https://teams.live.com/l/community/FEAgAGRUsyLPKIB8BU?v=g1 CP Spanish Club Polyglotte Luxembourg Community Community in Microsoft Teams on Wednesdays at 19:00 h: https://teams.live.com/l/community/FEA7FZyGJ463yXNOwM?v=g1 CP Luxembourgish Club Polyglotte Luxembourg Community in Microsoft Teams Wednesdays at 19:00 h https://teams.live.com/l/community/FEAyv2RkRJLWFo8vAo?v=g1 CP French Club Polyglotte Luxembourg Community in Microsoft Teams on Fridays at 19:00 h. https://teams.live.com/l/community/FEAHMjICzF_sgKrfgs?v=g1 When you click on the secured https link, you need to connect to Teams and click on the button to join via your browser (no installation needed) Or via the MS Teams App, which is of course also possible. Download from the official website for your desktop: https://www.microsoft.com/en-us/microsoft-teams/download-app For your Android device from Google: https://play.google.com/store/apps/details?id=com.microsoft.teams&pli=1 For your OIS device from Apple: https://apps.apple.com/us/app/microsoft-teams/id1113153706 Kind regards, Your Club Polyglotte Luxembourg team Email: clubpolyglotte@gmail.com

Welcome to our weekly physical or virtual Club Polyglotte meeting. * As usual, a minimum consumption of one drink or something small to eat is obligatory at Restaurant Quai Steffen at 13, Place de la gare at the Luxembourg railway station. * We start our get together at 19:00 h and finish at 22:00 h. As on every Tuesday, participate at one of the following language tables: 1. English 2. French 3. Luxemburgish 4. German 5. Spanish 6. Italian or languages like Mandarin, Russian, Romanian or Arabic, if needed. We are constantly searching for Buddies who lead the various language tables and for those who would like to participate in the organisation for our club established in 1999. Please message us, if you are interested in managing the Club with us on Facebook / Meta. Membership fees per calendar year: 3 EUR cash (members until and including 24 Y, only 1 EUR) Compulsory consumption applies at Restaurant Le Quai Steffen! Best regards, Your Club Polyglotte Luxembourg team

Feel free to bring games, or suggest some from my collection (http://www.boardgamegeek.com/collection/user/garryjenkins). Please RSVP so I can select appropriate games for the number of people attending. Food and drinks should be purchased on site. Also to have an idea about what type of games you probably will play, you can take a look at the comments of previous weeks of this weekly meetup. If you have any question, don't hesitate to send me a message, or ask here in comments.

**Join Our Monthly Artificial Intelligence Meetup!** Are you fascinated by artificial intelligence? Whether you're an expert, a developer, a startup founder, or simply curious about AI, our monthly meetup is the perfect place for you. Dive into engaging discussions on machine learning, its applications, and its implications for the future. **Why Attend?** * **Network with Experts:** Meet seasoned professionals and pioneers in the AI field. * **Learn and Grow:** Whether you're a beginner or an advanced practitioner, there's something for everyone. * **Explore Opportunities:** Discover startups and new technologies that are shaping the future of AI. **Who Should Attend?** * AI and Machine Learning Enthusiasts * Technology Students and Academics * Software Developers * Startup Founders and Entrepreneurs * Industry Professionals * Anyone interested in the broader implications of AI Don't miss out on this opportunity to connect with the AI community, share ideas, and gain insights that could shape your career or business. Join us to be a part of the conversation and explore the exciting world of artificial intelligence! Free entrance. Organized by European House of Artificial Intelligence ASBL [https://hai.lu](https://hai.lu)

Moving to a new city is exciting at first — a fresh start, new opportunities, a new chapter. But once things settle, being new in town can feel lonely. You don’t know anyone yet, you’re unsure where to go to meet people, and everyone else seems to already have their circles. That’s where we come in. Our Fast Friending evenings are designed especially for those who are new in town and ready to build real friendships — creating welcoming spaces where conversations flow naturally and meaningful connections begin. **You will need to buy a ticket for attending -** [https://lux28thmarch.eventbrite.co.uk]( https://lux28thmarch.eventbrite.co.uk) \*You can use any debit or credit card to purchase your ticket at PayPal checkout. It will ask you for your email address but that is only to send you a receipt. You do not need a PayPal account. TICKETS:- Early Bird - €5 / person Regular Ticket - €10 / person Cash at meetup: If you do not purchase a ticket in advance then you can pay Silvia cash of €15 when you attend. **Here’s how your evening will flow:-** **7:00 PM – Welcome** Arrive at 7:00 PM and be welcomed by your host, Silvia, who will guide the evening and help with introductions. Feeling shy? Come a little early and she’ll ease you into small-group conversations. You’re also welcome to bring a lady friend along for free. **7:30 – 8:30 PM \| Fast Friending** Chat with a new attendee every 3 minutes, ensuring you meet a variety of like-minded ladies and gentlemen. **After 8:30 PM \| Open Mingling** Reconnect with those you enjoyed speaking to and continue meaningful conversations at your own pace \- We are not a close knit tight group\. Our evenings are warm and comfortable for members attending for the first time and those coming alone\. You will not feel alone\! \- We have many groups in this city\. Members of our other groups who RSVP are included as guests of the organisers in order to give you an indication of expected people\. \- This evening is for ladies and gents in the 21 to 40 age group\. While some will be at the younger end of this range there will also be others at the other end of the range and lots in\-between\! You will naturally gel with others of your own age range and so you will always find many attendees who fit your range\. \- We are not a dating group\. Our events are not organised to manage your dating life\. Our group is created to help ladies and gents meet other like minded ladies and gents\. Please do not attend our event if a perfect gender balance is important for your enjoyment of our meet\-up\. Why do we have tickets? 1. Cover our costs - Our host is compensated for their time and work. We also pay meetup and have dedicated staff to manage our events, hosts, venues and communication. 2. Group Safety - By securing your ticket we have a record and you contribute to a well organized evening where everyone is more committed and better behaved. 3. Management - Tickets help us better manage attendee group size, book suitable space and activity. ABOUT [fastfriends.co.uk ](https://fastfriends.co.uk/)- We have connected members successfully for the past 10 years in over 30 cities (operating as Expatsclub, MeetConnectDevelop and fastfriends.co.uk). \-\-\-\-\-\-\-\-\-\-\-\-\-\- You can contact our founder Dan on +447715705005 with any questions or ideas. \-\-\-\-\-\-\-\- **Here are some videos which will give you some guidance and comfort to make your attendance more productive.** Secrets of socializing at our meetups - [http://bit.ly/secrets-socializing ](http://bit.ly/secrets-socializing) How to make new friends - [https://www.youtube.com/watch?v=v6GB0Hc_bSs](https://www.youtube.com/watch?v=v6GB0Hc_bSs)

Friday evening sketching session at Villa Vauban. Every friday Villa Vauban is free between 6-9pm. We willl have a monthly sketch & sip session (in that order :)) using a specific room/painting in the museum. Agenda: 6-8pm drawing/sketching 8-9pm sip your favorite wine, beer etc in a bar/restaurant in the city centre. Join the whatsapp group to keep informed and share your work: https://chat.whatsapp.com/CDtDO1GurPrA4ceFPePeQb

Want to practise French 🇫🇷 German 🇩🇪 English 🇬🇧 Luxembourgish 🇱🇺 — or ANY language you can find a partner for? Then join our crew of friendly expats & locals for a night of chats, laughs & global energy 🎉 In Luxembourg, speaking multiple languages is basically a superpower 🦸‍♂️🦸‍♀️ — but this meetup is all about connection, not perfection. Beginners, pros & “I understand but can’t speak” people — all welcome 😄 Don’t feel like practising a language? 😎 No worries — you’re STILL totally welcome! come hang out, meet people & enjoy the international vibes anyway 🥂✨ Come for the languages — stay for the laughter, friendships & drinks 🍹 ✨ What You’ll Find ✔ Super chill atmosphere 😌 ✔ Expats from everywhere 🌍 ✔ Zero pressure — just vibes ✨ ✔ “How do you say…?” moments 🤔😂 ✔ Old friends & new — ❤️ 🍹 AFTER-EXCHANGE APÉRO 🤩 Languages warm-up… Drinks cool-down… Balance restored 😌🍺 Most weeks we wander to another bar afterwards for beer, bites & bonus socialising. Just follow the organisers — they know the 🔥 hotspots 😉 🪧 HOW IT WORKS ➡️ Sit with the group for the language you want to practise ➡️ Look for the table signs 📍 ➡️ Switch groups anytime — totally chill ➡️ Rare language? Post in the group & find your match 💫 ➡️ Luxembourgish shows up too 🇱🇺 ⚠️ By attending, you agree organisers can’t be held liable for regulation violations (or accidental grammar crimes 😜)

***The LuxBuzz Integration Breakfasts are back - New 2026 Series*** **Dear community,** We are happy to announce the return of the **LuxBuzz Integration Breakfasts** - a new series of warm, informal morning conversations designed to make life in Luxembourg easier to understand and navigate. We begin with a topic that touches everyone who arrives in this country: **Education, Languages and Integration in Luxembourg** For many newcomers, building a life here means learning how the system works and especially how languages shape everyday experience. · Which language should you focus on? · How does the education system function? · And how do these elements influence your integration journey? This first Breakfast is an opportunity to explore these questions together openly and without pressure. **Our guest speaker** We are delighted to welcome **Lorraine Duong**, foreign language educator and audiovisual project manager at the Institut de formation de l’Éducation nationale (IFEN). Lorraine brings a unique perspective combining: * deep knowledge of the Luxembourg education system * practical experience supporting language learners * and a genuine passion for helping people integrate with confidence **☕ What to expect** * a relaxed and welcoming atmosphere * practical insights you can actually use * space to ask your own questions * meaningful conversations with others navigating a similar journey **📍 Event details** **Date:** 27 March 2026 **Time:** 09:00 – 10:30 **Location:** The Office Charlotte, Luxembourg Participation is limited to keep the discussion personal and dynamic. This initiative is organised by **The LuxBuzz Academy ASBL** within the framework of the **Biergerpakt for Intercultural Living Together by MIFA**. We are grateful for their support in making these community moments possible. If you are navigating life in Luxembourg or simply curious to understand it better - we would be very happy to welcome you. Please follow this [link](https://biergerpakt.zesummeliewen.lu/calendrier/luxbuzz-integration-breakfast-le-systeme-educatif-au-luxembourg/?fbclid=IwY2xjawQpRk1leHRuA2FlbQIxMABicmlkETA5UkRXUmNXbWZwV1M3TjNTc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHsiKEy8LGIQL4aQwbrJD32GqjbLXCQaEKVi4AFiPp6-8H9A7wph8AX9tGmTt_aem_vievRMMksXSpdF_oTYG0WQ) to registration Let’s create the buzz together 🐝🐝🐝

An ink painting workshop, an ancient art practiced on rice paper or silk, which combines elegance, tradition, and artistic expression through slow and meditative gestures. You will be guided by Yemin Yin, a recognized artist trained in London and Canton. Her ink paintings are found in collections worldwide. This experience includes: • A guided 2-hour workshop to discover the timeless elegance of ink painting in a small group • With all the materials provided (ink, brushes, rice paper) • A premium floral tea served throughout the session • Chinese pastries (light dim sum style) • Your artwork to take home €49 / person No experience required.

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 **Abstract** Web Forms gave .NET developers a powerful abstraction for building reusable UI controls long before design systems were a thing. Web Components finally bring that same idea to the browser natively. This session explores how the Web Forms mindset translates into Custom Elements, Shadow DOM, and HTML templates. We’ll examine how Web Components enable design systems that work across frameworks, how they differ from server‑driven controls, and why they’re becoming a foundational layer for modern UI. Whether you’re maintaining legacy apps or building greenfield projects, you’ll leave with a practical understanding of how to apply familiar patterns in a modern, standards‑based way. **YouTube Link** TBA

Over 50 Happy Hour – Liberty Tavern Polaris Join us for a fun and relaxed Over 50 Happy Hour on Friday, April 10th from 4:00 PM – 8:00 PM at Liberty Tavern Polaris. This is a great opportunity to meet new people in our age group in a casual, comfortable setting. Whether you’re in your fifties, sixties, or seventies, everyone is welcome. Some people who attend are retired, while others are still working, but we all share one thing in common — enjoying good conversation and good company. If you’re new to the group, don’t worry. Many people attend solo and quickly find it easy to strike up conversations. The goal of this happy hour is simple: meet people, socialize, laugh, and enjoy the evening. We’ll be gathering at Liberty Tavern Polaris, a welcoming tavern with a warm atmosphere, great food, and a bar perfect for relaxed conversation. Feel free to come when you can and leave when you want. Some members arrive right at 4:00 PM, while others stop by later after work. There’s no formal agenda — just friendly people getting together to enjoy a Friday evening. Location: Liberty Tavern Polaris 2170 Polaris Parkway Columbus, Ohio Time: Friday, April 10 4:00 PM – 8:00 PM Come join us for a drink, good conversation, and the chance to meet some great people in the 50+ community.

Builders, creators, architects, admins, consultants - come one, come all. This one's for you. We're bringing a little friendly competition to the Columbus ServiceNow community while highlighting the cool things people have built on the platform. Five presenters will take the stage to showcase something they've built, solved, designed, or imagined on the ServiceNow platform - and a panel of judges (plus YOU, our amazing audience) will score them live. So basically, America's Got Talent but make it ServiceNow's Got Talent. Bring a notepad if you'd like 'cause you'll definitely be learning something new. Each presenter gets 10 minutes max to wow the crowd with: • A demo • A real-world business solution • A bold idea • A UX transformation • Or a creative use of the platform Judging Criteria: 🏆 Business Value 🚀 Innovation ✨ User Experience This event is about celebrating ideas, sharing knowledge, and showing how ServiceNow can drive both business impact and meaningful user value. Come learn. Come support. Come get inspired. Refreshments and bites will be provided. And maybe next time… you’ll be on stage.

We meet to learn and practice American Sign Language and to grow our familiarity with Deaf culture. Facilitated by hearing folks (with a connection to a professional interpreter) using Deaf-created content. People of all ASL skill levels are welcome! As we learn, we hope to connect more with the Deaf community in Central Ohio. Join us as you're able! Come regularly or just once - whatever you're looking for! Each meetup will explore different topics related to ASL/Deaf culture, and will feature time to practice conversation with one another. Just bring yourself and a willingness to learn!

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).