Decentralized Systems & Applications

Welcome to our second London meetup of 2026, where we discuss Gen AI and Kubernetes! Details below: **Location:** Civo Tech Junction, First Floor, 32-37 Cowper St, London EC2A 4AW **Time:** Doors open at 6PM **Drinks, snacks, talks, and networking.** We’re excited to invite you to our second in-person **DevOps Society Meetup** of 2026, proudly **sponsored by Cast AI**. This event is focussed around Gen AI and Kubernetes, with two really exciting speakers lined up for this one in Carly and Kunal. Format of the Meetup: 6:00pm – 6:30pm — Networking on arrival, with food and drinks provided by CastAI 6:30pm – 7:10pm — First speaker + Q&A 7:10pm – 7:20pm — Break for refreshments and networking 7:20pm – 8:00pm — Second speaker + Q&A 8:00pm onwards — More networking at the venue, then at a nearby pub. *Timings can vary slightly depending on Q&A.* We’re excited to welcome everyone to our next DevOps Society London meetup, where we’ll be diving into two incredibly relevant topics in modern infrastructure: observing GenAI applications in production and optimising Kubernetes clusters. We’ll be joined by two brilliant speakers from the ecosystem who are working at the forefront of developer tooling and cloud infrastructure. As always, expect a relaxed evening of technical learning, discussion, and networking with fellow engineers from across the London tech community. *** ## 🎤 Speaker 1 - Carly Richmond **Developer Advocate Lead @ Elastic** ### Observing AI Applications with OpenLit and OpenTelemetry Observability is the ability to measure the current state of a system. With the rapid emergence of LLMs and GenAI applications moving into production, teams now need deeper insight into how these systems behave in real-world environments. In this talk, Carly will explore best practices for observing production AI applications, covering how engineers can capture logs, traces, and metrics to better understand how LLMs interact within their application ecosystem. She’ll walk through a real example of instrumenting an AI agent application written in TypeScript, using OpenLit to generate OpenTelemetry signals. The session will show the types of telemetry data teams can capture to identify usage patterns, detect errors, and troubleshoot issues commonly seen in production GenAI applications. ### About Carly Carly Richmond is Developer Advocate Lead at Elastic, based in London. She’s a UI developer who also writes backend services, a keynote speaker, and a tech writer who is passionate about helping developers build better systems. Outside of tech, Carly enjoys cooking, photography, drinking tea, and chasing after her young son. *** ## 🎤 Speaker 2 - Kunal Kushwaha **Senior Developer Advocate @ CAST AI** ### Optimizing Kubernetes and Unlocking Blockers with Container Live Migration Kubernetes promises automation, yet most clusters run at around **10% CPU utilisation**, leaving large amounts of infrastructure sitting idle. With endless instance types, constantly shifting prices, and the complexity of modern workloads, maintaining efficient clusters can quickly become a full-time job. In this talk, Kunal explores the real-world challenges teams face when running Kubernetes in production. He’ll cover where Kubernetes automation works well, where it falls short, and why optimisation remains difficult for many teams. Topics include: * Why most Kubernetes clusters are underutilised * The realities of autoscaling in production environments * Challenges around instance types and Spot capacity * Common mistakes teams make with HPA and VPA Once these challenges are laid out, Kunal introduces Container Live Migration as a way to overcome some of these long-standing blockers. To bring the concept to life, he’ll run a live technical demo where Pods running a small video game are migrated across nodes in real time, while the audience participates. The game continues running without downtime, demonstrating how live migration can improve cluster efficiency without disrupting workloads. Please register below to secure your spot. Spaces are limited and available on a first-come, first-served basis. We’re really looking forward to getting the community back together again for our first event of 2026. [Our slack community](https://join.slack.com/t/devopssociety/shared_invite/zt-3mswuylw7-MhJg1IZ70rX_GpJTluG2Cw) \- join in and introduce yourself\! [Our Youtube Channel ](https://www.youtube.com/@DevOpsSociety)for regular podcasts with DevOps professionals + more DevOps content. [Website](https://thedevopsociety.com/) [To partner with us](https://thedevopsociety.com/partnerships) CAST AI website - https://cast.ai/ Thanks! From the DevOps Society team [Ben](https://www.linkedin.com/in/benwhitmarsh/) and [Vytas](https://www.linkedin.com/in/vytasdevops/)

We are excited to announce our upcoming Spring Community Showcase. This event is an opportunity for individuals at all skill levels to come together and share their experiences with Rust. Whether you’re working on a personal project, contributing to an open-source initiative, or teaching a concept related to Rust, we invite you to present your work and insights. Take this opportunity to build your confidence and share what you are doing. Speakers === If you would like to give a presentation, please send Ernest a direct message with your talk title and a brief abstract of approximately 60 words. Each presentation will last about 25 minutes, followed by 5 minutes for questions and answers, for a total of 30 minutes. We have four slots available this month. **Dan Groshev** Okmain Library: You have an image, but you want a colour How do you pick a colour that represents an image but also looks good? Dan will talk about his Okmain library, colour science, auto-vectorisation, SIMD, and his experience building it in Rust and PyO3. **Jérôme Étévé** Mockapot: A percolator library in Rust Jérôme is the author of the Mokcaccino library, which started as a way to marry my interests for Rust and for search technology. He will discuss the design, the tricky aspects of Rust he learned along the way, and how Rust and Python complement each other. **Evadne Wu** JavaScript Sandboxing using Deno on top of Elixir & Erlang/OTP. Intelligent AI agents can write code that calls existing APIs in secure sandboxes, allowing higher token efficiency, better performance, and lower per-turn latency. Deno’s primitives in Rust can be integrated into such an agent harness, utilising the Elixir programming language and the Erlang/OTP runtime, which allows you to construct agentic systems that are massively concurrent and fault-tolerant.

Join fellow product people at The Product Group London on **Thu 2nd April** for an evening of learning, sharing and networking. **Topic of the Night: Product Outcomes Over Outputs** Product management is changing to be much more focused on achieving quantifiable outcomes over outputs and hitting dates. So how do product people make the shift and stay in the outcomes lane? On the night, we’ll explore what this really means incl. the important outcomes to focus on; making the culture shift to outcome focused; adjusting success metrics; using outcomes to drive product strategies, roadmaps, discovery and delivery; getting stakeholders onboard with a different way of thinking, and much more. **Featured Guest: Phil Hornby, Global Product Lead, ZF Group** Phil is a product leader, coach and technologist with over 20 years of experience across SaaS, IoT and Automotive. His career has spanned development, sales and operations, but product management is where he found his home, focusing on solving complex customer problems with scalable solutions. Today, Phil works as Global Product Lead at ZF, leading a tier 1 commercial vehicle diagnostics platform. As a senior IC, he works across multiple product teams to shape cohesive products that combine commercial thinking with deep technical expertise. He also founded a ZF community of practice to connect and grow digital product professionals. Alongside his ZF role, Phil continues to coach product leaders and teams, having supported thousands of individuals across hundreds of companies. He is known for helping people think clearly, make better decisions and take action that drives real impact. Phil is also a regular speaker and co-host of the Talking Roadmaps podcast. **About The Product Group London** The Product Group London is a monthly meetup designed to bring product people of all levels together for topical discussions, as a group and with our guest speakers. With attendees from startups to large enterprises, there is no shortage of opportunities to network and make new connections. And whilst the focus is on product management, we welcome product designers and engineers to join for some friendly and lively discussions. **A word about our sponsor and host, BrainStation** [BrainStation](https://brainstation.io/london) is a global leader in digital skills training, empowering businesses and brands to succeed in the digital age. Established in 2012, BrainStation has worked with over 500 instructors from the most innovative companies, developing cutting-edge, real-world digital education that has empowered professionals and some of the largest corporations in the world.

Our monthly Causevest Meetup. ( This is just a chilled out afterwork spot where we eat drink and talk crypto) Learn about all cryptocurrencies investing, security , wallet setup, ask me anything. Guest speakers and obtain a new insight into the possibility of blockchain technology with our development team. To be updated - Join us on telegram https://t.me/joinchat/FuQGSRJkhCx3gEdlupYL9g

Please note - make sure you book a space if you are coming to the event as we have a certain amount of tickets available. Have you ever been to a public speaking class where they expect to go up and speak for 2 minutes with no prior experience ? I think this is too hard for many people and just overwhelms the nervous system. This workshop is designed for people who want a gradual and easier approach.

We start in pairs and work our way up to smaller groups and slowly desensitise to being seen by a larger audience.The Speeches are are also short, from 10 seconds to 1 minute. You are under no pressure to do anything, all exercises are voluntary, no one will ever be put on the spot. I want people to view this class in the same light as a weight lifting class, if there was a weight to heavy for you , you would just say "I can't lift that yet" and there would be no shame nor embarrassment around it, so If something is abit to outside of your comfort zone, just sit it out and don't feel that you have to be embarrassed or have to explain yourself. We'll be in studio 12, at the theatre deli which is 107 Leadenhall street, it can be a bit confusing as is look a bit life and office building but it's actually studio and rehearsal spaces. I hope to see you there, if youre still worried feel free to send me a message and hopefully I can put your mind at ease 
Take care 
James. 
Gentle speaking

**About this event** Whether you've just heard about OpenClaw or you've been running it for a while, come along and meet your people. This is a relaxed, informal get-together for beginners and experts alike — no agenda, no pressure, just good conversation and a shared love of OpenClaw. Bring your laptop, chat with new friends, swap ideas, and build stuff together. **Cost** Free — no tickets, no fees, just show up.

I’m proud to be a Co-ordinator for **Golden Hearted UK**, and this Easter we’re coming together to spread kindness where it’s needed most. Last year was such a success that we are organising another special **Easter Appeal** to support vulnerable children and elderly members of our community who may otherwise go without a little seasonal joy. For many, Easter can be a difficult and lonely time. With your help, we can change that. ### 💛 How You Can Help: \- JOIN our facebook community \- https://www\.facebook\.com/groups/703270807162286/ * Donate Easter eggs or sweet treats * Contribute essential food items * Gift small care packages for elderly residents * Offer monetary donations via our registered paypal account (every pound makes a difference) * Buy items from the Amazon Wishlist * Volunteer your time to help us prepare and distribute donations Our goal is simple: **bring smiles, comfort, and a sense of community to those who need it most.** Whether you can give a little or a lot, your support truly matters. Together, we can show what a golden-hearted community looks like. If you’d like to donate, volunteer, or learn more, please get in touch. Let’s make this Easter brighter for our children and our elderly neighbours. Thank you for your kindness and generosity 💛 The FINAL date we are collecting donations may vary but will be before Easter. All contributions are welcome xx * **Amazon List:** https://www.amazon.co.uk/hz/wishlist/ls/15QI77NTFNRQU/ref=nav_wishlist_lists_1

Circling is a present-moment relational awareness practice. We’re bringing our attention to what’s unfolding in real time, repeatedly returning to what’s happening within ourselves, between us and in the shared space of the group. We practice approaching our own experience and the experience of others with curiosity, becoming more aware of the subtleties of what is present. The emphasis is on staying in contact with your experience as it unfolds. The unfolding may be quiet and internal or it may lead to words – naming sensations, thoughts, emotions, impulses or perceptions. It might also include movement or other non-verbal expression. The idea is not to try to change what’s there, but to become more aware of what it is and how we are meeting it and relating to it in the moment. Often awareness follows expression and this is okay too. We are all swimming in the ocean of the unknown. Occasionally the whale lifts its head above the surface and we catch a glimpse – a moment of seeing something about ourselves that we hadn’t noticed before. Over time, many people find that this kind of awareness practice deepens their sense of aliveness and helps them notice patterns in how they relate to themselves and others. With ongoing practice, some people discover an increased capacity to be with themselves and others in a more conscious, grounded, flexible and responsive way – where we can experience ourselves as active participants in our lives rather than passive reactors to what is happening internally or around us. Both those new to Circling and those with more experience are very welcome. **To reserve your place, transfer £18 via my eventbrite page:** **[https://www.eventbrite.co.uk/o/robyn-wilford-29457876735](https://www.eventbrite.co.uk/o/robyn-wilford-29457876735)** Any questions, please direct message me here or email: [robyncontact365@gmail.com](http://robyncontact365@gmail.com) We’ll start at 7pm (arrive from 6.50pm) and will finish at 9pm. There will be some optional hang out time after 9pm. Opposite Elephant & Castle tube and Thameslink train station, and numerous bus routes. **Facilitation and Terms of Service** This is a facilitated group practice but not group therapy and not psychotherapy. Because of my NARM background and own personal journey, I value personal choice, agency and emergent self-awareness. Participants are encouraged to stay connected to their own pace and to keep checking in with themselves throughout the practice – noticing what feels supportive, what feels like too much, and what they may need in any moment. There’s no expectation to be vulnerable or to share anything that feels too personal or emotional and you are always welcome to speak, remain silent, pause, step back and take a break, leave or ask for what you want, including asking for support. Participants are also invited to respect one another’s pace and boundaries. The intention of my Circling leadership is to support myself and people in staying present with their experience while in relationship with others, and to develop greater awareness of how they are meeting that experience. Having said that, like solo meditation, it’s normal that we will all repeatedly lose presence and Circling can sometimes evoke strong emotions or reactions in people which can be difficult for them and challenging for others in the space to navigate. If you find the prospect of this potentially destabilising or overwhelming, or if you are currently experiencing significant emotional distress or instability in your life that might be exacerbated by this type of group environment, or if you are unsure you’ll be able to take care of yourself and ensure the practice works for you, then please contact me before registering so we can discuss further. By registering you acknowledge that you have read and agree to the above.

We will revise the basic grammar of the Arabic language. The book, **Arabic Verbs & Essentials of Grammar**, by Jane Wightwick (Third Edition), can be purchased from Foyles or Waterstones or online. [https://www.hatchards.co.uk/book/arabic-verbs-and-essentials-of-grammar-third-edition/jane-wightwick/9781260030990](https://www.hatchards.co.uk/book/arabic-verbs-and-essentials-of-grammar-third-edition/jane-wightwick/9781260030990) We will cover chapter one. Level: beginners, but you must already be able to read the alphabet. This is a monthly event. Note: to make the most of this session, you should read the chapter before hand. Anything you do not understand, we can discuss during the session

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

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).

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is brought to you by the Dianetics and Scientology life improvement center.

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.