Hadoop

## \*Please note - to be admitted to this event you must register for approval here: [https://luma.com/lcsqwmf3](https://luma.com/lcsqwmf3) This weekend hackathon brings together LangChain and SurrealDB to explore how agents can move beyond demos by grounding themselves in structured, persistent context. As agentic systems become more autonomous, their biggest failure mode isn’t model capability - it’s context. Agents struggle with accuracy, consistency, and reasoning when memory is shallow or unstructured. Knowledge graphs provide a powerful way to represent relationships, state, and history, enabling agents to reason over how things connect, not just what text is retrieved. Over the weekend, you’ll build practical agent projects using the LangChain ecosystem, with a strong emphasis on knowledge graphs and real-world retrieval workflows, using SurrealDB as a unified data layer for graph, document, vector, and temporal data. You’ll also have plenty of time to connect with both the LangChain and SurrealDB communities in London, collaborate with other builders, and get hands-on support from mentors. *** ## Schedule **Friday** * 18:00 - Doors open, check-in, pizza & drinks * Hackathon kickoff, team formation & briefing (time TBC) **Saturday** * All day - Build, iterate, mentor support (details TBC) **Sunday** * Final build, demos & judging (details TBC) * 15:30 - Closing, winners & wrap-up Full challenge details and rules will be shared ahead of the event. *** ## What you’ll work on * Agent workflows built with LangChain * Knowledge graph–driven context and memory * Hybrid retrieval patterns (vector + graph) * Persistent agent state and evolving context * Practical, production-oriented agent use cases *** ## Prizes * Swag and LangSmith credits from LangChain * Swag from SurrealDB *** ## Why attend? This is a hands-on opportunity to build credible agent projects in a single weekend, learn production-oriented patterns, and explore how structured context improves agent accuracy and reliability. You’ll collaborate with experienced builders, get direct support from the LangChain and SurrealDB teams, and connect with the wider London agent and AI engineering community. **FAQs** **Is the venue accessible?** Absolutely! There is a lift that takes you up to Level 4 where the event is held. **Is this event for me?** SurrealDB events are for software engineers, developers, architects, data scientists, data engineers, or any tech professionals keen to discover more about SurrealDB: a scalable multi-model database that allows users and developers to focus on building their applications with ease and speed. **Am I guaranteed a ticket at this event?** Our events are tech-focused and in the interest of keeping our events relevant and meaningful for those attending, tickets are issued at our discretion. We therefore reserve the right to refund ticket orders before the event and to request proof of identity and/or professional background upon entry. **Are there any House Rules?** At SurrealDB, we are committed to providing live and online events that are safe and enjoyable for all attending. Please review our [Code of Conduct](https://surrealdb.com/legal/code-of-conduct) and [Privacy Policy](https://surrealdb.com/legal/privacy) for more information. It is compulsory for all attendees to be registered with a first **and** last name in order to attend. Any attendees who do not adhere to these requirements will be refused a ticket.

A typical Eastside session is structured, challenging, and genuinely fun, with a strong, welcoming community at its core. Every session is expertly coached, with clear guidance on exercise form and technique throughout. Coaches are active and engaged, offering encouragement and adaptations whenever needed, so everyone can train safely and confidently. No one is left behind. Sessions begin with a thorough warm up, followed by a full body workout combining strength, cardio, and functional movement. Exercises are always scalable, ensuring the right challenge for every individual. Each session includes a dedicated anaerobic block where intensity is deliberately increased and heart rate is pushed. This is where you safely push yourself, build fitness and resilience, and realise you are capable of more than you thought. We finish with a short cool down and stretch, with time to ask questions and connect with the group. You will work hard, feel supported, and leave every session feeling stronger, energised, and part of a tight knit community. Here’s a [link to our FAQ’s](https://www.eastside.fit/bootcamp-faqs)

Come and join us at this popular Friday evening meditation class, at the School of Meditation in West London. Meditations are accompanied by short, profound spiritual readings and discussion, and no experience is required. A wonderful way to start your weekend....we hope to see you there!

Ready to get outside? Our Friday morning Nordic Walk in Brockwell Park is back! At this moment we can meet with up to 30 people (of more than two households) to do outdoor exercise and walks. However, i like to keep our exercise groups small, so I have set the maximum participants at 12. For now this walk is for our experienced Nordic Walkers only, who already used to Nordic Walk with us regularly before Covid 19 kept us indoors, and who have their own Nordic Walking poles. As this session is outdoors, we will not ask you to wear a face mask, but we do ask you to keep 2 meters apart. Some of our walkers might be immune compromised or more at risk, so please help us keep everyone safe! Please do not come to the session and stay at home if: - you know you have been in contact - in the last 2 weeks- with someone with symptoms of possible Covid, or if you have been in contact with someone who tested positive. - you have any of the following symptoms: (new) Loss of smell/taste, Persistent cough, Fatigue, Loss of appetite, Skin rash, Hives, Fever, Severe muscle pain, Shortness of breath, Diarrhoea, Delirium, Abdominal pain, Chest pain, Hoarse voice, Eye soreness, Sore or painful throat, Nausea or vomiting, Headache, Dizziness or light headedness We meet by the Blackbird bakery in Herne Hill, between the station and the park. Session Price: £10 per session, £89 for a 10-session card or £70 unlimited sessions per month. Session cards and Pay Monthly can be used in any of our outdoor walks or indoor Zoom classes sessions (except for the Parkinson's sessions). Pay What Works: The price shown above is the “true” value of the session that best reflects the work I put into preparing and leading your session. However, I understand that not everyone can afford to pay full price, and I don’t want that to stop you from joining us. In an effort to find a balance between more financial accessibility and sustainable pricing, I now offer a “Pay What Works” model. This allows for financial flexibility while still valuing and respecting the work and energy I provide in creating and delivering these classes. Then send an email to ailien@fitandhappyoutdoors.com with the heading “INVOICE please”- followed by “FAHO 1” to pay full price as quoted below, “FAHO 2”, for 20% off, or “FAHO 3” for 50% off. Please do tell me if you want to pay for 10 sessions, or if you’d like to pay monthly. I prefer payment by bank transfer, but if that is not possible you could pay in cash. No cheques please, the queues by the banks are just too long. We walk in all safe weather conditions – if a walk is cancelled, we will contact you to let you know. Please check for text messages or Meetup messages before leaving home!

### ECSTATIC DANCE LONDON presents: ## 🌎CACAO DANCE TRIBE: **Afro House & World Beats Ecstatic Dance + Cacao Ceremony** **(DJ & live percussion set)** **Friday Night \| 7:45PM–10:15PM** **Fruit Social: 10:15PM–10:45PM** **Tufnell Park, London** Immerse yourself in an **ecstatic dance journey** infused with **Afro House rhythms, world beats, and live percussion**. Move freely, connect deeply, and let the music take you on a powerful journey of embodiment, release and ecstasy. We’ll open the evening with a dance movement warmup, then shift to a **heart-opening raw vegan cacao ceremony** and positive intention setting ritual, tuning in together before the main dance Wave begins. **Please note:** an RSVP here on meetup is not a ticket. To reserve your place please book via eventbrite. Thank you x **🎫Tickets:** [https://www.eventbrite.co.uk/e/ecstatic-dance-london-cacao-dance-tribe-wellness-rave-cacao-ceremony-tickets-498619222517](https://www.eventbrite.co.uk/e/ecstatic-dance-london-cacao-dance-tribe-wellness-rave-cacao-ceremony-tickets-498619222517) **🌟 Join the Mailing list for EVENT UPDATES & DISCOUNTS:** [https://ecstaticdancelondon.myflodesk.com/we-are-london](https://ecstaticdancelondon.myflodesk.com/we-are-london) **📣Join our WhatsApp Community:** [https://chat.whatsapp.com/IuJVuQiUmENDJGD7bhYRZr?mode=ems_copy_t](https://chat.whatsapp.com/IuJVuQiUmENDJGD7bhYRZr?mode=ems_copy_t) **✨Follow us on Instagram:** [https://www.instagram.com/ecstaticdance_london?igsh=MXFmdm01NzRtd2xndg%3D%3D&utm_source=qr](https://www.instagram.com/ecstaticdance_london?igsh=MXFmdm01NzRtd2xndg%3D%3D&utm_source=qr) **What to Expect?** ✨ Uplifting **Afro House**, **Brazilian grooves**, and **organic world rhythms** 🥁 **Live percussion** bringing fire and soul to the dancefloor 🍫 **Raw ceremonial cacao** to open your heart and elevate your energy 💃 Freestyle, expressive movement & moving meditation 🍉 **Optional fruit social** afterwards to nourish and connect No alcohol, no drugs, just rhythm, breath, and community. This is one of London’s most loved **sober Friday night dance experiences**, where you can shake off the week’s stress and celebrate life through movement. ### About Cacao Dance Tribe Founded in 2017, **Cacao Dance Tribe** was one of the world’s first **Cacao Ceremony + Ecstatic Dance** events, originally held in Camden. After a pause during the pandemic, we’re thrilled to have **revived the tribe in Tufnell Park since 2023,** co-created by the **Ecstatic Dance London** community, pioneers of the UK’s sober dance movement since 2009. No dance experience needed — everyone is welcome. We also offer limited **free crew spaces** — scroll below for details and sign-up. **Music Vibe:** Afro House \| World Beats \| Brazilian \| Organic Rhythms

Join OutdoorLads weekly Saturday bouldering morning event at Vauxwall West - please check our main event page on our website (link in the comments below). We welcome all members of the LGBTQ+ community, and you will be socialising with a supportive group boulderers who are always happy to introduce complete beginners to the sport or solve difficult bouldering problems together. This event is for members of all levels of experience and all are welcome to come along to any of the sessions. Bouldering is unique. There are few sports out there that offer a mental and physical challenge no matter what skill level you are at. Each route consists of several holds that the climber uses, focusing on problem-solving and technical movements to help them reach the top. No two routes are ever the same, and the colour-coded system indicates the difficulty level, so there's a climb for everyone to enjoy! If you have never tried bouldering before, please ensure that you have gone through the centre's safety and induction video beforehand (https://londonclimbingcentres.co.uk/pre-register/) as you will be required to answer a few safety questions when registering at the centre.

All you wanna do (is join our next table-read)! Welcome to the show, to the historemix! Our third table-read after Hamilton and High School Musical - come join us for a sing-a-long read through of SIX the musical! Unfortunately, like the Ex-wives, we're divorcing from the Meetup platform but we'll be continuing the party on Whatsapp so join us on this group here: https://chat.whatsapp.com/I5l4odh27LHGgfWqVLIsJF?mode=gi_t to stay tuned and keep the music playing. SEE YOU THERE👑

Join us for a scenic and peaceful adventure through the countryside north of Wickford, where quiet woodlands, farmland paths, and the tranquil waters of Hanningfield Reservoir combine into a perfect winter escape. This circular route winds through open fields, hedgerow trails, and rural lanes before meeting the edge of the famous Hanningfield Reservoir nature reserve — a haven for winter birdlife and sweeping water views. Expect varied terrain, gentle rolling hills and wide Essex skies. Start/Finish: Wickford Station Distance: 18.5 km Time: Approx. 6 hrs including breaks Total Ascent: 155 m Grade: 2.5 – Moderate–Challenging Meet: 9:00 am Start: 9:15 am Finish: \~3.15pm From Wickford, we follow country lanes and permissive paths through historic Downham and the surrounding farmland. As we loop north, glimpses of the reservoir appear through trees before we reach the southern shoreline, where birds, water views and peaceful wood edges take centre stage. The return route offers more variety—past small farms, tucked-away woodland strips and gently undulating countryside—before bringing us back into Wickford. A brilliant longer day out for those looking for mileage, landscapes, and the calm beauty of rural Essex. Highlights • Hanningfield Reservoir – Wide water views and plenty of birdlife • Quiet Farm & Field Trails – Classic Essex patchwork countryside • Downham & Old Hamlets – Charming rural corners with big skies • Gentle Undulation – Low hills, varied terrain and great pace-setting What to Wear and Bring: \- Our walks go ahead in all weather\, so dress appropriately\. Always carry a waterproof jacket\. \- Check the forecast and bring sun cream\, a hat\, or sunglasses for warm days\, and waterproofs\, a warm hat\, and gloves for cold or wet days\. \- Wear trousers or leggings to reduce the risk of tick bites and nettle stings\. Avoid denim or cotton\. \- Sturdy walking shoes or boots are essential\. Open\-toe shoes are unsuitable\. \- Bring at least 1\.5 litres of water\, lunch\, and snacks\, as there may be no opportunities to buy food or drinks along the route\. \- Public toilets may not be available on the route\. Sign-Up Form: If you haven’t completed a form this year or your circumstances have changed, please fill out the sign up form before attending. Participation is not allowed without a completed form, as this ensures we understand your needs and can maintain group safety. (link can be found in Ts&Cs section of the website - or cut and paste below into your browser) Form link: https://form.jotform.com/201554976381058 Preparation and Fitness: You are responsible for your own health and safety. Ensure you can hike continuously for the duration specified. Dress appropriately, please bring the required gear and carry any personal medications. Participants without proper equipment may be unable to join the walk. Our Guides: Our experienced, qualified leaders are skilled in navigation, first aid, and outdoor leadership. Each route is carefully planned to match the advertised grade, ensuring a safe, supportive, and enjoyable experience. Additional Information: Dogs are not permitted on our walks. Adventure Women UK is an all-female activity group, and participants must be over 18. Walk Grades: For details on walk difficulty levels, visit the Walk Grades Section at https://adventurewomen.co.uk. Cancellation & Credit Policy (Day Experiences) All bookings are non-refundable. • Over 4 weeks before the event: You may transfer or receive credit towards another event. • 4–1 weeks before the event: No refund, but a transfer/credit may be offered only if your space is filled. • Less than 1 week before the event: No refund or transfer available. All transfers/credits are discretionary and subject to availability. Important Note: By RSVPing “Yes” to any event, you agree to the group’s terms and conditions. For more details, visit: https://adventurewomen.co.uk/ts%26cs. Outdoor activities involve inherent risks, including slips, trips, falls, drowning, exposure to extreme weather, equipment failure, and medical emergencies, which can result in serious injury or death. By participating, you voluntarily assume all such risks. For more details, visit: https://adventurewomen.co.uk/ts%26cs. About Us: Adventure Women UK is an outdoor pursuits club that empowers women to explore, grow, and connect through shared adventures. Our supportive community welcomes women from all backgrounds, offering experiences that inspire, uplift, and redefine what it means to be an adventure woman. Questions? Please visit our FAQ page (under the “more” section) OR drop us a message if you have any questions.

It's Herschel's birthday (1792). Not William, who discovered Uranus & various moons around it and Saturn, or Caroline who found a few comets. John, continuing the family work completed mapping of the Southern Hemisphere sky, and named the discovered moons - in Saturn's case, after Titans in Greek mythology. First stop along this Wealden walk will be his home at The Moor, a quintessential English village complete with green where cricket was played in Herschel's day, church, and the Eight Bells. The church houses a very unusual relic, delivered in 1944. Next in our orbit is Bewl Water, the largest stretch of water in SE England, described as unlike anywhere else. [Bewl Water - The Ultimate Destination for a Family Day Out](https://www.bewlwater.co.uk/) Final stop is Ticehurst, with chocolate box cottages. Further details: [Best places to live: Ticehurst, Sussex | Muddy Stilettos | Muddy Stilettos](https://sussex.muddystilettos.co.uk/best-places-to-live/sussex/best-places-to-live-ticehurst/) And when taking photographs along the walk - who coined the word 'photography' which he helped develop? Yep, John Herschel. Outward Travel: Take the train departing 9.24 AM from London Bridge to ETCHINGHAM. The return train fare with a Network Card or GroupSave is £17.00. Gather outside the ticket office at London Bridge to arrange group tickets. Walk start: 10.31 AM from Etchingham rail station. Bring a packed lunch. Village / pub stops. Orbital walk. *How to join?* * The walk is entirely free of charge; * You only arrange for your own travel and pub expenses; * Understand our terms and conditions below (the "IMPORTANT" part); * Understand how to stay safe outdoors, as you will be responsible for yourself. See our quick safety tips: http://www.meetup.com/Free-Outdoor-Trips-From-London/about/ *What to bring* * Plenty of water, 1-2 litres recommended * Enough snacks and packed lunch to keep you energized along the walk * Extra snacks and an extra packed lunch just in case * Rainproof (ideally waterproof) clothing, sturdy shoes/boots you don't mind getting muddy * Spare socks * Walking poles and/or an umbrella :-) * Yourself... * ...and your camera! * Cash for train ticket * Cash for pub at the end of the walk? Feel free to ask any questions in the comments section! IMPORTANT Please bear in mind this is a free of charge, self-guided trip with a hobby group. It is not organized by a business nor any entity with commercial purposes. Any trip details, travel advice, route planning, instructions and other content in our group merely represent our shared personal knowledge, research and suggestions as outdoor enthusiasts. As this is no business, there is no "product", "service" or "package" and also no "tour guide", "operator" or "walk leader". Each participant is responsible for their own safety. Even if some of us are very experienced walking outdoors, nobody assumes responsibility for any kind of injury, damage or loss that may happen. Despite this, we take extreme precautions and all trips we plan are very safe, fun, highly educational and popular. Our experienced members volunteer their time and effort to shape a pleasant and quality adventure for everyone :-) By participating you acknowledge and agree with this disclaimer. Here are our tips on staying safe during outdoor trips: http://www.meetup.com/Free-Outdoor-Trips-From-London/about/ TRAVEL, ACCOMMODATION, INSURANCE Although we provide detailed suggestions, each participant is expected to arrange their own travel - this gives everyone the freedom and choice. Anyone interested in travel or outdoor insurance should also arrange this on their own. As mentioned above we always take extreme precautions, but some people may still feel safer if covered. As most of our trips are confirmed or postponed very close to the event date - heavily depending on the weather forecasts - we advise not to buy this until the last minute. People getting tickets from the same station are encouraged to meet early on the day to benefit from discounts such as GroupSave.

**Address: 210-212 Southwark Park Road, London SE16 3RX** **Doors Open 12pm Event starts 12:30pm-5pm** **Player Capacity: 8 players** Welcome to our **Shadowverse TCG** Constructed Tournament. The day consists of 3 to 5 rounds of Swiss and prizing is distributed to players with a positive record. To participate in the event, alongside your **ticket purchase on our [website](https://www.thebrotherhoodgames.co.uk/shadowverse-evolve-events)**, you will be asked to register on the Bushinavi app. We use this app for our tournament. We will hand out a promo pack for the tournament. If you are unfamiliar, please ask our member of staff upon arrival to the store where a member of staff will be happy to assist. If you haven't already, please join our Instagram, YouTube and Discord Server for news about upcoming events, announcements, and social interaction with your fellow players! *The Brotherhood Games Discord* https://discord.com/invite/SJaQXyeNXx

Weekly cycling club open to members of that club only. Membership enquiries to creativewellnesswon@outlook.com

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

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

We will show a variety of methods for building agents that run in Microsoft Foundry. This covers the different types of agents: Prompt, Multi, and Hosted, as well as the development lifecycle using evals and traces.