Golang

**Buy your ticket with the App below** **it's cheap and easy** https://play.google.com/store/apps/details?id=com.c2c.digital.c2ctravel **Meeting Point** 👉 **12 : 00 am** **Liverpool Street Station** platform 11 https://maps.app.goo.gl/oSp3yyUTGNwQwkK67 What's Happening if you miss the train ? NO WORRIES ! take next train, we will share our location in the comments **WHATSAPP GROUP** Follow this link to join my WhatsApp group: https://chat.whatsapp.com/BRn9gWhrnzfL2xJPe4qmwl **About** It's a bank holiday and we want to take a break from the big city. So join us for an outdoor walk by the beach side with complementary coffee ☕️and pancake 🥞 and a pint of beer 🍺 later on by the pub of course we suggest you bring your own booze and drink as we are going to have a picnic by the beach ️Let's go to the beach-each, let's go get a wave 🙌 They say, what they gonna say 💃🕺 🏊‍♂️ let's go to the beach ⛱️🍦🍨 they say what they gonna say 🍺🍺 let's go get a wave 🦋🍒🍉 Hey hey folks As you can see, this Sunday is going to be a hot day and instead of having a usual picnic by the park we have arranged a day trip by the beach 😎 ⛱️Pack food and a blanket for an afternoon of friendly conversations with like-minded people in a beautiful outdoor setting. 🏊‍♂️ Whether you'll bring a homemade dish to share (don't forget your reusable utensils!) or just some snacks, come meet new or old friends, bask in the sun, and enjoy the beautiful beach

**BOOK HERE**: https://sportas.co.uk/games/48278 **Game Description:** 🧡Come and join us for a casual friendly & social badminton session in Archway. This venue consists of 4 courts in total. 🚨Directions🚨 📍Enter via Thornbury Square road and walk all the way downhill. (Note: you won’t be able to enter through the school!) 🚶‍♂️10 minute walk from Archway or Highgate tube stations (Northern Line) 🚗 Free car parking on site 🚿 Showers, changing rooms, water fountain & toilets are available in **Rules** 🏸The session is for mixed ability players so please be positive and encouraging to all players. We highly encourage you to read the rules for classic doubles prior to the session so we can run the games smoothly. 👯‍♀️We play doubles for the whole time and keep rotating courts so everyone gets to play with each other. We use Yonex Mavis 300 Nylon Shuttle cocks. We also have a few spare rackets.

The world is in crisis and many people think we've gone past the tipping point and the planet is doomed. However, there are those who have hope and faith in science that some can survive the polycrisis and get to live in a sustainable society and planet. But there's a problem... **There's no clear vision of what a sustainable society and planet should be**, and without that destination, how can we set out on the journey to get there? Please join like-minded people to discuss this. We'll agree an agenda at the start of the meeting. Bring an open mind, suggestions and perhaps a pad of paper. **Here are some topics to be covered.** Please use the comments/chat to suggest other areas for consideration *Depending on the mood of attendees, the frequency of further meetups can be agreed.* **WHAT DO WE WANT A SUSTAINABLE SOCIETY AND PLANET TO LOOK AND FEEL LIKE?** · A planet with clean atmosphere, oceans and soil with systems in place to keep them that way · The abolition of poverty and hunger · Equality of opportunity for all to achieve a peaceful and contented life without fear of physical or other violence · Access to healthcare, hygiene and sanitation for all · Access to quality education for all · A more responsible system of financial structures which embraces the best of co-operative production, capitalism and other systems · A safe justice system for all · Societies which respect for the diversity of opinion, ethnicity, sexuality, religion · Respect for the natural resources and fragility of Planet Earth and their finite capacity · Societies where the more fortunate, stronger and healthier help those less strong, less fortunate or less healthy. · Peaceful co-existence between the varying communities of the planet **What Freedoms ?** · Freedom to travel anywhere · Freedom to worship (should there be limitation such as worship should not be based on destroying the existing system…??) · Freedom from violence · Freedom from hate · Freedom from poverty (how define?) · Freedom of speech · Freedom from anxiety about the future · Freedom from concentration of power · Freedom to preserve culture and arts · Freedom to make decisions about one’s body · Freedom to seek representation and to represent others · Freedom to be different · Freedom to be heard

**BOOK HERE**: https://sportas.co.uk/games/45276 **Game Description:** In partnership with In2Sports, we bring to you a new Monday night session 🏙️ Learn more about them here: https://in2sports.org This is a lower intermediate session, if you’re beginner please attend the mixed/social sessions 🧡 💦 Water fountain, showers, bathrooms and changing rooms available **Directions:** 🚶‍♂️5 minute walk from Canary Wharf station **Rules** \- 2 teams of 6 \(1 rotating sub\) \- Games to 25 points \- Please be kind and respectful to all players 🧡

**PLEASE READ: Advanced booking is required via our website [https://www.silverfit.org.uk/nordic-walking-sessions](https://www.silverfit.org.uk/nordic-walking-sessions)/ we do not use Meet Up as a means for sign up. Please DO NOT just turn up to this session.** Activity: Nordic Walking at Docklands Where and when: Mondays 10am, Meet at Bellucci Cafe inside Decathlon - Canada Water (https://www.thelodge.cafe/[https://www.thelodge.cafe/](https://www.thelodge.cafe/)) Price: £3 when booking on TicketTailor Benefits of Nordic Walking: The fitness and health benefits of Nordic Walking are significantly greater than regular walking, trekking or even jogging, with scientific research from Europe and the USA proving that Nordic Walking: Activates 90% of the body's muscles Burns up to 46% more calories than regular walking Increases aerobic effect by up to 25% compared to regular walking Decreases load and strain on the lower body Tones upper arms, shoulders and back muscles Improves lateral mobility of the spine Develops core stability and strength Promotes an upright posture These benefits are achieved through the use of specially designed poles and a properly learned and performed Nordic Walking technique, whereby the poles are used as a resistance tool to engage the upper body. The result is a low impact, high results, total body exercise. As a low impact walking exercise, Nordic Walking is something that can be done and enjoyed individually or as a group activity, anywhere a person can normally walk. *** For more information about this session please email the Project Manager at - **info@silverfit.org.uk** Learn more about **Silverfit Charity** on our website [www.silverfit.org.uk](http://www.silverfit.org.uk/)

Join us for some fun, competitive, but friendly games at our 4-court sports hall. We use Yonex Mavis 600 Nylon shuttles during the 2-hour session. **PAYMENT** * **Session Fee: £9** * We are cashless, kindly pay the session fee **by midnight** on the night before the session. You are welcome to pay early! You can even pay when you book! See our About page for the full process. * If no payment is received, you will be removed and may even be liable for a late cancellation fee if your spot is not taken. * Please use **“your meetup name + date of event”** as payment reference * **Account name:** Thomas Lam * **Sort code:** 04-00-03 * **Account number:** 7478 8608 **LATE CANCELLATION OR NO-SHOW** * **All** **no-shows or late cancellations** (24 hrs or less) will be charged if your spot is not taken by someone else - you will have a title next to your name with the amount and date owed. * Members with 2 no shows/late cancellations will be removed from the group unless outstanding payment is received * **The late cancellation policy** is set up to discourage last-minute cancellations and therefore applies with or without the presence of a waitlist * **Note:** If you are on the Waitlist and a spot becomes available, you will automatically be bumped onto the On list provided the event has not yet started. It is your responsibility to **remove yourself from the waitlist** if you can no longer make it to avoid being charged a no-show if someone cancels late. **PLAYING** * Please wait to be marked off before entering the hall. * Sessions are to finish promptly on the hour by school requests. * If you finish a match with 5 minutes to go, please start packing up instead of starting a new game. **RACKET HIRE** * Please note that we won't be hiring out rackets, so kindly bring your own racket. **PARKING** * There is parking available, but it is now paid parking. Parking is opposite the entrance. Please check the signs for parking payment instructions. **TRACK & TRACE** * We will collect your phone number on-site. Your phone number will also be used in case of fire to contact you if you have not made it to the fire evacuation areas. You can see maps at the venue. We are excited to see you guys on the court! Team LSBC

**Venue:** Riverbank House, 2 Swan Ln, London EC4R 3AD **Please note:** 1\. 🚨🚨🚨 A valid photo ID is required by building security\. 🚨🚨🚨 2\. This event follows the [NumFOCUS Code of Conduct](https://numfocus.org/code-of-conduct). Please familiarise yourself with it before attending. If your RSVP status says "You're going" you will be able to get in. No need to show your RSVP confirmation when signing in. If you can no longer make it, please unRSVP as soon as possible. **Code of Conduct:** This event follows the NumFOCUS Code of Conduct. Please get in touch with the organisers with any questions or concerns. As always, there will be free food and drinks, generously provided by our host, Man Group. **Main Talks** 1. [Robin Linacre](https://www.linkedin.com/in/robinlinacre/) - **Rapid deduplication and fuzzy matching of large datasets using Splink** This talk introduces Splink, a free and open source Python library for probabilistic record linkage and deduplication at scale. I’ll explain the core ideas behind the approach, show how it can be used in practice, and reflect on the opportunities of building open source tools from within the public sector. Data deduplication is a common data quality challenge: it arises whenever multiple records are collected about the same person, organisation, or entity without a shared unique identifier. This talk will introduce the core ideas behind probabilistic record linkage and show how Splink, a free and open source Python library developed at the UK Ministry of Justice, can be used to link and deduplicate large datasets quickly and accurately. I’ll cover the practical steps involved in training linkage models, using unsupervised learning, improving performance and accuracy, and visualising results and diagnostics. I’ll also touch on what it has been like to build and maintain open source tooling from within the UK public sector, and the opportunities this creates for solving problems at citizen scale. The talk is aimed at people with basic experience working with tabular data in Python, and assumes no prior knowledge of record linkage. 2. [Filip Makraduli](https://www.linkedin.com/in/filipmakraduli/) - **Small Model Inference Infrastructure: Lessons Beyond vLLM** Embedding models are evolving rapidly, from dense-only architectures, to hybrid dense+sparse (BGE-M3), multi-vector late interaction (ColBERT), and vision-language models (ColQwen2, SigLIP). Yet while LLM serving infrastructure is well-established (vLLM, SGLang), small model deployment still relies on inefficient single-model containers or custom-built systems. Production teams face a dilemma: deploy dozens of single-model containers with 5-10% GPU utilization, or invest months building complex multi-model infrastructure. This talk explains some of the key concepts of embedding inference and how it is different to LLM inference. 3. [Ian Ozsvald](https://www.linkedin.com/in/ianozsvald/) - **Build your own LLM, Live, with MicroGPT** Andrej Karpathy's MicroGPT is a single file no dependency mini GPT, you can run it live with me. We'll talk about how GPT works, we'll look at the code, we'll reflect on the Torch-based nanoGPT "big brother" and you'll end the talk with stronger intuitions about how our next best token guessing overlords are working. Plus you'll have a mini GPT running on your laptop in 200 lines of Python. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Logistics** * Doors open at **6.30 pm** (get there early as you'll need to sign in with building security). * Talks start at **7:00 pm**, with drinks afterwards from **9:00 pm** at The Banker (EC4). We have reduced capacity for this event, but there will be plenty of people to discuss data science questions with. Please unRSVP in good time if you realise you can't make it. We're limited by building security on the number of attendees, so please free up your place for your fellow community members. If you want me to trim lightning talks down to two or shorten any abstracts, say which ones.

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/)

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

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 :)

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!

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/

**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

**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

We meet at lunch each week and each meeting follows a fairly organized agenda. First all participants pass their business cards around. Then each member and guest is invited to give a one-minute overview of their company and what is a perfect referral for the week. We always have a 10 minute presentation from one of the members about their business in more detail. And finally we pass referrals. You're welcome to visit. Nobody is ever put on the spot. Bring plenty of cards!

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!