CoffeeScript

**Welcome to TennisCrew! 🎾** **We’re a relaxed, social tennis group focused on good vibes, community, and making sure everyone actually gets plenty of time to play.** **We intentionally keep our numbers low across our courts so you won't be standing around crowded sidelines.** **(Please note our event is also on Sportas. So numbers here may not accurately reflect the event. Thank you.)** **https://sportas.co.uk/games/48684** **Who is this for?** **Everyone!** **We have two courts booked, so we will split them by experience level to keep the games balanced:** **Court 1 (Beginners): Perfect if you are newer to the game or just getting back into it. If you don't know the rules or how to score doubles, no worries at all, the event lead is very happy to explain!** **Court 2 (Intermediate/Advanced): For players looking for consistent rallies, solid serving, and a faster pace.** **🎒 Equipment We provide all the tennis balls! Please try to bring your own racket, as we only have a very limited number of spares to lend out.** **🍻 The Social** **The best part of social tennis is the social! After we wrap up on the courts, we’ll head over to The Cambria for a well earned chat and a drink. It’s completely relaxed and there is absolutely no pressure to drink alcohol. Just come along for the community vibes and meet some great people.** **Can't wait to see you on the court!**

**Hostess: Anna** \*This event is a collaboration with other groups and social networks and it will be well attended \*To attend this event you need to buy a ticket from [https://www.fatsoma.com/e/rsgn3nd0/bank-holiday-speed-dating-37-54-at-bocca-lounge-south-kensington](https://www.fatsoma.com/e/rsgn3nd0/bank-holiday-speed-dating-37-54-at-bocca-lounge-south-kensington) Age range: 37-54 ( as a general guide) Join us for a fun and relaxed night of a slow dating and socialising in South Kensington! Αre you finding 4 mins too little time to decide if you wish to meet the other person again or not? Don't worry, come slow dating and have 6-8 minutes dates! Speak with 10-15 people of the opposite sex for 8 mins each then select who you like and leave with the contact details of some potential lovers! After the slow dating we stay for socialising so you speak more to the people who you like! The next day you receive the next day the contact details\* of your mutual matches (people you have selected and they have selected you back) at your e-mail! We don't send you to date in a online platform...We send you to date in real life with confidence! We run speed and slow dating events for more than a decade now and we are proud to say that they actually work! People that meet in our dating events date after, some make long term relationships, and some move together and we even had some marriages ! If this is your first time attending a slow dating there is nothing to worry about , we will be there to welcome you, put you at ease and explain you the process. Bocca lounge, is a multi-faceted instagrammable gem located at the heart of south kensington, serving a wide varying choice of non-alcoholic and alcoholic drinks to be accompanied with high-calibre shishas. For those hungry bocca lounge serves also amazing Mediterranean cuisine! The program of the night is 5:30-6:00 Registration 6:00pm-6:45pm First session of the Slow Dating 6:45pm-7:00pm Break-Socialising 7:00pm-7:45 pm Second session of Slow Dating 7:45pm Speed Dating finishes and Socialising starts How to find us: Just come inside and ask for Marianna's Speed Dating / Anna. Any issue on the night feel free to call Anna: 07801038091 For general inquires or difficulties with your ticket booking feel free to e-mail us at benetoupromotions@gmail.com or call Marianna on: 07949526733 \* By participating to the event you agree to have your details that you submitted to us passed to your mutual matches ( people that you will select on the form that will be given to you during the event and they will select you back). \*Our company is registered with ICO. so you contact details are safe with us Please Note: -Tickets need to be bought online and are not available at the door -Dress code: Elegant/Smart/Office Attire/Smart Casual ( Smart jeans are alright but ripped jeans, t-shirts, hoodies, sportwear, sportshoes or trainers are not allowed) -A valid proof of ID (Passport, Driving License, or National ID) is required upon arrival independently of the age for security reasons

**Join us on *Discord* to keep updated!** **[(Click me! Online Offline Discord)](https://discord.gg/uuwybw93kj)** We will be star gazing in Hyde Park! If you have a telescope, binoculars or just wish to join a group of star gazers - come and join us! A telescope will be provided. Astrophotography and light painting welcome! Should you all agree - we can head to a local pub after! We will meet outside Royal Albert Hall and then make our way into the park! Please make sure to wait on the main road - Kensington Road (A314) - Royal Albert Hall entrance. By holding up our Online Offline meetup photo - we can easily join the group together! See you there!

**Hello there!** Our Face-to-Face Afternoon Classes are back this May in London! Are you learning English as a second language and looking for an opportunity to practise your English? Interested in **free, in-person classes**? We’ve got you covered! Here at **Stafford House,** our teachers-in-training are gaining hands-on experience by teaching enthusiastic English learners. Each lesson is interactive and fun, with plenty of opportunities to practise speaking, meet other learners, and improve your English along the way. We also offer **free online English classes**. Check out our other events for more information! Please see the **updated** details below! 🕑 **When:** From **4th May - 28th May (4 weeks)** ➡️**Mondays, Tuesdays, Wednesdays, and Thursdays** 2:30 p.m. – 4:30 p.m. ➡️**Fridays** 1:30 p.m. - 3:30 p.m 📍 **Where:** Stafford House London, 2 Southampton Place, WC1A 2DA (just 2 minutes from Holborn Station) 📚 **Level: Both levels available** **\- Pre\-Intermediate \(A2\-B1\)** **\- Upper\-Intermediate \(B2\)** Spaces are limited and allocated on a first-come, first-served basis. Please arrive **15- 30 minutes early** to secure your spot. We will ask for your name and email upon arrival. *Please note⚠️ confirming attendance on Meetup does not guarantee a place in the classroom.* **Please note that class times or dates may occasionally change due to the nature of the course. If this happens, we will inform you by email.** We look forward to seeing you all very soon! Got Questions? send us an email at [[teachertraining@staffordhouse.com](mailto:teachertraining@staffordhouse.com)]

Ole and Steen have been serving the Danish people with delicious breads and pastries made by hand for over 20 years, always with the very best ingredients. Now their all day menu which celebrates the best of Denmark makes its way to London Victoria. This coffee meetup will be a regular event without the need to book, although an rsvp would be appreciated to indicate number of people expected. The event held at this venue each fortnight on a Saturday . Plenty tables and chairs allows for social distancing. They also have good coffee and other hot and cold drinks. If you cannot find us, phone 07940 717 221 THIS IS A FREE EVENT.

May Edition ✨✨! We will be at Kraken Tech (Octopus Energy Group), London office! (in-person only event, no streaming) **Talks:** **Django's GeneratedField by example — Paolo Melchiorre** Learn how to use Django 5.0's GeneratedField through practical examples. This field lets the database compute values automatically based on other fields in your model — a powerful feature that's easy to underuse. Paolo will walk through real-world use cases to show where it fits and how to make the most of it. Paolo Melchiorre is a Python backend developer, Django contributor, and Python Software Foundation Fellow. He serves on the Django Software Foundation board, co-organises PyCon Italia, and is a coach for Django Girls and a navigator for the Djangonaut Space mentorship programme. *** **Django in the Lab: how web development is reshaping behavioural research — Andy Woods** Off-the-shelf platforms can't always keep up with the complexity of academic research. Andy has been using Django since version 1.11 to build tools that can — from coordinating live location-based VR studies to running inclusive diary studies via WhatsApp and auditing immersive experiences for accessibility. He'll share where Django works especially well in academic settings, what surprised him along the way, and why this moment feels like a real opportunity for the Django community. Andy Woods is a Senior Research Engineer-Psychologist at CoSTAR & StoryFutures, Royal Holloway, University of London, and a Django Software Foundation Individual Member. **Want to share your Django or Python knowledge?** We’d love to feature your talk! Just fill out our [Speaker form ](https://tinyurl.com/django-london-speaker-form) to propose a talk! **Agenda:** • 6:15pm Doors open, socialising • 6:30pm Food and drinks offered by our sponsor • 7:00pm Doors close \*\* • 7:15pm Introduction, News, Talks • 8:30pm Socialising • 9:30pm Fin **Please make sure to arrive between 6:15 PM and 6:55 PM**. If you arrive earlier than 6:15 PM or later than 6:55 PM, you can take a seat in the seating area located in the downstairs reception. **Please note that we cannot accommodate arrivals after 7:15 PM.** Our meetups are governed by a [Code of Conduct](https://www.djangolondon.com/code-of-conduct/). Please take a few minutes to read it. This meetup is sponsored by: • [Kraken Tech (Octopus Energy Group)](Octopus%20Energy%20Group): "Kraken is a revolutionary energy tech platform built with predominantly Python & Django. We Serve 54 million households worldwide and have 38GW of contracted capacity." • [JetBrains](https://www.jetbrains.com/): "We make professional software development a more productive and enjoyable experience." Website: [https://djangolondon.com](https://djangolondon.com/) BlueSky: [@djangolondon.com](https://bsky.app/profile/djangolondon.com) Github: [github.com/djangolondon](https://github.com/djangolondon/) Open Collective: [opencollective.com/the-london-django-meetup-group](https://opencollective.com/the-london-django-meetup-group/)

Do you want to submit a talk to a Postgres conference? Do you want to try out the challenge of fitting a bunch of interesting information into 5 minutes for a lightning talk? Can you talk for 1 to 2 minutes on a Postgres topic you've just heard? On the 6th of May, we will be back at Star of Kings, running an event which is all about speakers and speaking. With the Call for Papers for PGDay UK closing on the 12th, we are inviting anyone who has a talk idea, is unsure of whether the topic fills the time, or just might enjoy a bit of technical improv to join us. If you would like to present a talk or a lightning talk, please get in touch. We will update this event description a people come forward. In the absence of any volunteers it will be Postgres-themed improv talks and, maybe, an organiser taking a talk for a spin. Don't let it come to that :)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the London Coffee Club and make new friends!** Each meetup brings together 4–6 people for casual conversations over coffee. We use the Groupvibe platform to facilitate the meetup and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com/](https://groupvibe.com/) We’ll share the exact location of the upcoming meetup the night before only if you have bought a ticket or membership plan. **Why this works:** \* Smaller groups make real conversations easier. \* Discover new restaurants in your city, together. \* Curated brunch venues with good food and vibe. \* If you hit it off with your group, there’s plenty of time to hang out afterwards. **Note:** RSVPs on Meetup don’t reflect total attendance. Many attendees register directly via our website. The event on [Meetup.com](http://meetup.com/) is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.

**Complimentary Event Passes** We’re offering a limited number of complimentary passes specifically for our MongoDB User Group members! To snag yours, please send a direct message to the MongoDB User Group account on Meetup or leave a comment at *Start the conversation* below. **About The Event** At MongoDB.local London, discover how the UK’s leading innovators are ditching fragmented AI stacks for a unified data platform that accelerates production and takes AI from demo to production—quickly. Whether you're growing a startup or scaling and modernising enterprise applications, join us—alongside founders and leaders defining the future of London’s tech landscape—to learn how MongoDB helps you ship your AI vision faster. [View agenda here](https://www.mongodb.com/events/mongodb-local/london)

Join us on May 7th from **6:00pm** for a Data Streaming meetup hosted by **[Fresha](https://www.fresha.com/)**! 📍**Venue:** **Fresha** The Tower, 207 Old Street London, EC1V 9NR 7th Floor **PLEASE bring your PHOTO ID and REGISTER with your First and Last Name, Email. Thanks!** **DOORS CLOSE AT 7PM FOR SECURITY.** 🗓 **Agenda:** * 6:00pm – 6:30pm: Food/Drinks and Networking * 6:30pm - 7:00pm: Anton Borisov, Principal Data Engineer, Fresha & Nicoleta Lazar, Sr. Data Engineer, Fresha * 7:00pm - 7:30pm: Olena Kutsenko, Staff Developer Advocate, Confluent * 7:30pm - 8:00pm: Tom Scott, Founder & CEO, Streambased * 8:00pm - 9:00pm: Q&A Networking 💡**Speaker One:** Anton Borisov, Principal Data Engineer, Fresha & Nicoleta Lazar, Sr. Data Engineer, Fresha **Title of Talk:** Apache Fluss: Streaming Storage for Real-Time Analytics **Abstract:** Apache Flink has largely solved streaming computation, but state management remains a bottleneck. Operator state—often backed by RocksDB—is scoped to individual jobs, making it hard to share state across pipelines without re-emitting it through systems like Apache Kafka. This leads to expensive joins and added operational complexity. Apache Fluss (incubating) addresses this by externalizing state into a streaming storage layer backed by S3. Its PrimaryKey tables act as upsertable key-value stores with replicated changelogs, enabling shared state tables accessible from Flink, Spark, or native clients. With Flink 2.1’s Delta Join, both sides of a join can perform lookups against Fluss-managed indexes—eliminating the need for large join state altogether. In this talk, we’ll introduce Fluss, show key use cases like CDC enrichment and bilateral joins, and share lessons from running it in production on EKS —including the trade-offs and rough edges we encountered. 💡**Speaker Two:** Olena Kutsenko, Staff Developer Advocate, Confluent **Title of Talk:** The journey of a record from Kafka topic to analytics table **Abstract:** Modern data platforms increasingly rely on streaming systems like Apache Kafka as the source of truth—but turning event streams into reliable, queryable analytics tables is far from trivial. This talk explores what really has to happen when moving data from a Kafka topic into an Apache Iceberg table. Beyond simple ingestion, we will walk through the essential steps: schema evolution, data normalization, partitioning, exactly-once guarantees, late-arriving events, and table maintenance. Using Confluent Tableflow as one concrete example, we will examine how these challenges can be addressed in practice. Along the way, we will compare alternative approaches—such as Kafka Connect sinks, stream processing pipelines, and custom ingestion frameworks—to highlight trade-offs in correctness, latency, and operational complexity. The goal is not to promote a single solution, but to provide a mental model for designing robust streaming-to-lakehouse pipelines, helping you understand what matters regardless of the tooling you choose. **Bio:** Olena is a Staff Developer Advocate at Confluent and a recognized expert in data streaming and analytics. With two decades of experience in software engineering, she has built mission-critical applications, led high-performing teams, and driven large-scale technology adoption at industry leaders like Nokia, HERE Technologies, AWS, and Aiven. A passionate advocate for real-time data processing and AI-driven applications, Olena empowers developers and organizations to use the power of streaming data. She is an AWS Community Builder, a dedicated mentor, and a volunteer instructor at a nonprofit tech school, helping to shape the next generation of engineers. As an international speaker and thought leader, Olena regularly presents at top global conferences, sharing deep technical insights and hands-on expertise. Whether through her talks, workshops, or content, she is committed to making complex technologies accessible and inspiring innovation in the developer community. 💡**Speaker Three:** Tom Scott, Founder & CEO, Streambased **Title of Talk:** *Infinite Kafka? Rethinking Retention with Iceberg* **Abstract:** Apache Kafka is designed for high-throughput, low-latency event streaming, not cost-efficient long-term storage. Yet we constantly see cases like event sourcing, audit/compliance, and large-scale reprocessing forcing that pattern onto it. As retention increases, costs grow linearly to support edge cases, one-time runs, and “checkbox” use cases. Can Iceberg help here? In this talk, Tom explores a hybrid architecture that separates hot and cold data while preserving Kafka’s log semantics. Using a combination of Kafka and Apache Iceberg, he demonstrates how to extend Kafka into low-cost object storage, enabling effectively unlimited retention without sacrificing performance or access patterns. The result is a unified log that supports both real-time processing and long-term replay, removing the traditional trade-off between cost and capability in Kafka-based systems. **Bio:** Long-time enthusiast of Kafka and all things data integration, Tom has more than 15 years of experience in innovative and efficient ways to store, query, and move data. Tom is currently CEO at Streambased, a company focused on unifying operational and analytical data estates into a single, consistent, and efficient data layer. \*\*\* If you are interested in hosting/speaking at a meetup, please email community@confluent.io

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

We’re still working to get more people into these Meetups, but our goal is to give PlayYourCourt members a few social tennis outings each week in addition to your practice sessions and Challenge League matches. These Meetups are co-ed, super laid back, and all skill levels are welcome. Post your skill level and a suggested court in the comments section so we can round up as many players as we can for some tennis fun! Also, if you’re looking to meet new practice partners or play some matches and you aren’t already in the PlayYourCourt Community, you can go here to see what we’re all about and sign up: https://www.playyourcourt.com/tennis-community/columbus-oh/meetup/ If you love tennis, we’d love to have you! Be sure and watch the quick video that explains how everything works. Happy hitting! - Scott

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Early-bird coffee and conversation at [Kittie's Worthington](https://kittiescakes.com/)!