PostgreSQL

Talk 1 **Title: The Platform Is the People: SLAs, DORA and Trust at Billions of Requests a Month** By: Harry Bouras Role / LinkedIn: AI & Cloud Engineering leader, formerly heading the API organisation of a leading, extremely global and multicultural corporation. LinkedIn: https://www.linkedin.com/in/harry-bouras/ Abstract: Most "platform" talks are about tools. This one isn't. Heading the API organisation of a leading, extremely global and multicultural corporation, interconnecting decades of legacy systems while serving billions of requests a month and scaling across both Azure and Google Cloud, taught me a contrarian lesson the hard way: at that volume, platforms don't fail on technology, and cloud bills don't explode because of bad Terraform. They fail, or succeed, on how the organisation is set up to own, deliver and grow the thing. The org chart is the real architecture. I'll walk through the levers that actually moved the needle, each anchored in real moments from that scale. How SLAs, framed as clarity rather than punishment, change engineer behaviour more than any dashboard. Why extending trust and time to a team up front - the most uncomfortable thing a leader can do, is precisely what raises build quality and cuts the rework you can't afford at billions of requests. What genuinely changed when we dragged a waterfall-shaped organisation toward iterative, Scrum-based delivery, and why that was about shortening feedback loops, not adding ceremonies. And how DORA metrics became our objective answer to a question every team argues about: what actually makes a successful Senior Software Engineer and what a DevOps engineer? Then the human core, told honestly, which means told as comedy. What makes a good manager in this world, narrated through the things I was certain about and was completely wrong about. The running joke is also the real point: nearly every instinct that made me a good engineer made me a mediocre manager until I unlearned it. Finally, a look at what we're all about to get wrong together: AI is forcing DevOps to grow up into DevSecOps - and the teams that handle it well will be the ones that already have the ownership, trust and growth culture this talk is really about. Talk 2 **Postmortem Culture: Turning Failures into Learning, Not Blame** By: Dani Yelovitch Most engineering teams treat incidents as embarrassments to bury — a quick fix, a vague Slack message, and everyone moves on. This talk argues for a different approach: treating every failure as a gift. The core idea is blameless postmortems — a practice pioneered at Google and Netflix where the goal isn't to find a scapegoat, but to understand how the system (people, tools, processes) allowed a failure to happen in the first place. If a human made a mistake, the real question is: why did the system make that mistake easy to make? The talk would cover: What a good postmortem looks like (and the common ways they go wrong) How to run a blameless review without it becoming a blame-by-committee session Turning action items into actual change, not a graveyard doc nobody reads Building psychological safety so engineers report problems early instead of hiding them The key takeaway: teams that learn from failure faster than their competitors ship better software with fewer catastrophic incidents — not because they have better engineers, but because they've built better feedback loops. **Talk 3:** Title: From Service Organization to Self-Service: Platform Engineering in Action By Pavel Bureš from Sky Modern engineering organisations accumulate platform silos faster than they can pay them down — each team picking its own way to provision workloads, databases, queues and caches, each with subtly different security, observability and cost profiles. In this talk we share how we are tackling that problem at scale through a Platform Engineering practice built on the principle of a unified, abstracted interface for application-centric configuration — an approach that shifts platform teams from "ticket-driven plumbing" to product thinking: stable contracts, golden paths, and self-service by default. In the second half we zoom in on PEaaS (Persistence Engineering as a Service), our concrete implementation of these principles for stateful workloads. We will walk through the architecture — Crossplane 2.0 composition functions on EKS, application-centric Kubernetes claims (XRs), and a tenant-onboarding model that automates IAM, VPC endpoints, OIDC and S3 provisioning — and how it abstracts heterogeneous backends (Keyspaces, Aurora DSQL, Redis Cloud, and Kafka on EKS) behind one consistent interface. Attendees will leave with: A practical pattern for designing engineering platforms in their own organisations. A reference architecture for persistence-as-a-service on Crossplane. Honest lessons on standardisation, tenant onboarding and platform adoption.

Free Event/Vstup Zdarma Pro češtinu, podívejte se níže EN Hello, people of Prague!! We bring you a forum to trade your language skills and learn something more. If not interested in language, you could have a general conversation. The goal is to create a chill environment for social networking with a focus on learning the language of your choice. So grab some beverages at the bar/cafe and get on with it every Thursday. **NEW** Venue: Tequila Tales Bar **NEW** Location: Ujezd 409/19, 11800 Malá Strana Timing: 1900-2200 (Every Thursday) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- CZ Ahoj Pražáci!! Přinášíme vám fórum, kde můžete vyměnit své jazykové znalosti a dozvědět se něco víc. Cílem je vytvořit pohodové prostředí pro sociální sítě se zaměřením na výuku jazyka dle vašeho výběru. Takže si vezměte nějaké nápoje v baru/kavárně a pusťte se do toho každý čtvrtek. **NOVE** Místo: Tequila Tales Bar, Ujezd 409/19, 11800 Malá Strana Čas: 1900-2200 (každý čtvrtek)

Do you ever feel like being gay or queer has seemingly been reduced to hook-up apps, partying and superficiality? Does spending time at gay clubs, bars and saunas leave you feeling unfulfilled or even empty? Does your inner voice tell you that there must be a more meaningful way to connect with your queer brothers? Well, there is, now. 𝙌𝙪𝙚𝙚𝙧 𝙈𝙚𝙣 𝘾𝙤𝙣𝙣𝙚𝙘𝙩: 𝙂𝙤𝙞𝙣𝙜 𝘿𝙚𝙚𝙥𝙚𝙧 is an event for men seeking to connect and build community through yoga, mindfulness, and deep & honest conversations. A phone-free, alcohol & substance-free space where you can be your authentic self, connect with like-minded men and learn tools for rebalancing your body, mind & spirit. 𝙏𝙝𝙚 𝙛𝙞𝙧𝙨𝙩 𝙤𝙣𝙚…. We invite you to a Two-hour evening of: ✨𝙔𝙤𝙜𝙖 ✨𝙃𝙚𝙖𝙧𝙩 𝘾𝙞𝙧𝙘𝙡𝙚 ✨𝙈𝙞𝙣𝙙𝙛𝙪𝙡𝙡𝙣𝙚𝙨𝙨 ✨𝘿𝙚𝙚𝙥 𝘾𝙤𝙣𝙫𝙚𝙧𝙨𝙖𝙩𝙞𝙤𝙣𝙨 How did we arrive here? The idea was born from a simple conversation between two strangers. Two Czech guys, Martin & Pavel, who tried to find a similar space in the Czech Republic after returning from overseas. After experiencing gay retreats focused on yoga, meditation, tantric practice, Reiki, sweat lodges, and embodiment work in Spain, Belgium, Australia, and New Zealand, it was time for the Czech Republic to shine. About your hosts: Martin is a Yoga Alliance-Certified Yoga Teacher with 200-hour training received in Belgium. He is passionate about yoga, mindfulness, and his vision is to create a healthy gay community and help reverse the ‘gay men loneliness’ epidemic. Martin pioneers DEI initiatives as Partnership Manager in his corporate role. “The inspiration came from communities I experienced during a retreat in Spain and while living in Belgium, where I saw how powerful it can be to have spaces centred around openness, authenticity, connection, and well-being. I also know similar communities exist in cities like Berlin, and I would love to help create something like that here in Prague.” Pavel has been an avid meditator for years, with experience in mindfulness, tantric meditation, Reiki, and shamanic ceremonies from his life in New Zealand and Australia. Living more consciously, connected with universal energy, while honouring the elements, the ancestors, and Pacha Mama, has been instrumental in Pavel’s growth. He continued his learning by completing Level 1 & Level 2 Reiki training earlier this year. The call to return home was answered, and now it’s time to open a space for queer men in the Czech Republic. “I received my first ‘activation’ from a Meditation Master in Vietnam in 2007, but corporate life & chasing ‘status’ got in the way. I returned to regular practice in 2021, and slowly incorporated different practices into my daily life. I credit conscious living to healing my traumas and to the success of my ongoing sobriety.” WHEN: 18 June at 8pm WHERE: Zen Den Yoga, Vinohrady, Prague 320 CZK / person Secure your spot by filling out this form: https://forms.gle/SwNW4pwHB4HLhApy6 Our first event is limited to 15 men only. No prior experience in yoga, mindfulness, or conscious living is required.

The owner of Green Table invited me to check out their Florentinum Summer Party this Thursday, so let’s welcome the summer season in style! ☀️🍹 They’re turning the inner garden courtyard into **an open-air party with a live DJ**, a singer, drink specials, and great tapas. 📸 IG reel from last year's event: https://www.instagram.com/p/DOBmVviDAD_/?hl=ne The plan is simple: **We’ll drop in, grab some drinks, and see how the vibe is.** If it’s killer, we stay and hang out in the garden. If we want to switch gears—or catch the Czech vs. South Africa football match later—we’ll migrate to a spot nearby. ⚽🍹 📍**Piazzetta Florentinum / Green Table**: [https://maps.app.goo.gl/osLWzEDVuSDYvRMs6](https://maps.app.goo.gl/osLWzEDVuSDYvRMs6) **🕒 THE PLAN:** * **16:00 \| Summer Party Starts**: Feel free to drop in whenever you finish work. * **18:00 \| Vibe Check**! We'll decide as a group whether we stay in the garden or move out to watch the game. **🎟️ FREE ENTRY**

🎾 Social Padel Open Play – All Levels Welcome Looking for a fun way to play padel and meet active people around Prague? Whether you're on the court every week or trying padel again after a break, you're welcome to join us. We take care of the organization so you can simply show up and play. ✅ All skill levels welcome ✅ Come solo or with friends ✅ Organized matchups and rotations ✅ Friendly social atmosphere ✅ Maximum court time for everyone One of the best things about padel is how easy it is to join and enjoy, even if you've never played with the other people before. Depending on the number of players, we'll run doubles matches and rotate players throughout the session to make sure everyone gets plenty of time on court. 🎾 Great matches ⚡ Good energy 🤝 No pressure — just padel and good people 📍 Padel Club Spoje 📍 Na Balkáně 990/21a, Prague 3 Hosted by Tyler & Láďa 👋 ⚠️ Meetup RSVP alone does not reserve your spot. To secure your place, please register here: [https://www.bananasport.cz/sportovni-udalost/564](https://www.bananasport.cz/sportovni-udalost/564) See you on court!

## **What IdeaVerse is about** **We meet usually once a month to discuss some of the current challenges as well and perhaps come up with new ideas on how to overcome them. The format of the meeting includes an initial sharing of viewpoints by each participant without judgment, and in the second half we will discuss our ideas and try to find things to learn from each other.** **In this next meeting we'll be discussing...** the future of work in the age of AI. I know, people are talking too much about this already in tech meetups where they just praise it to Kingdom Come. We're tired of it. But whether we like that it exists or not, we are confronted with a choice that I'd like us to discuss: **Do I lean into AI like I'm told I HAVE TO, or choose a different path, one more into physical labor or working with people? Or do I just say goodbye to work and start my own business?** We hear thhat AI is going to replace a large number of jobs, starting with call centers, Uber drivers, writers, graphic designers, translators, etc. That a senior expert will replace 4 others in his team using AI. That the only jobs that will remain are those which require human touch like holding meetings, talking face to face with customers, jobs that require empathy or jobs that require dexterity like plumbing. **But the path forward seems so unclear:** 1\. Who should learn AI: young people who want to compete with seniors\, or seniors because juniors don't know enough to spot errors? 2\. Should I double down on AI courses and certificates or jump a sinking ship and learn a craft or improve my social work skills? Or start my own business to escape irrelevance at work? 3\. Do we go with the flow and adapt to this rapid overwhelming change\, or demand from policy makers that they do not let companies do as they please if that means lower wages and unemployment at scale? **Some suggested reading/watching:** * [If AI Takes All Of Our Jobs... Who's Going To Buy Everything?](https://www.youtube.com/watch?v=MYB0SVTGRj4) (the answer may shock you! :) - a 12 minute video) - good summary of the most likely future scenarios for automation and economics. Does not answer our questions but sets the scene for it. * [AI Experts: These Are The Only 5 Jobs That Will Remain in 2030!](https://www.youtube.com/watch?v=GCjmK66x_Yk) (15 minute video) - a collage of various human and AI experts discussing options for work in the future (mostly from the famous DOAC). * [The Future of Jobs Report 2025](https://www.weforum.org/publications/the-future-of-jobs-report-2025/in-full/3-skills-outlook/) (40 minute read) - lots of data, may need skimming but highly useful insight into projections for which jobs will be useful in the future. **The meeting is free to attend, but please buy a drink or two at our patron's place, to make them happy. They also have food in case you find the meeting too early (see [menu](https://altangrebovka.choiceqr.com/section:kavarna---jidelni-listek)).**

Weekly Czech Conversation Meetup 📅 Every Thursday \| 🕢 19:30–21:30 📍 Tequila Tales, Újezd 409/19, Praha 1 Are you an expat in Prague learning Czech at A1 or A2 level? Ready to stop just studying and start speaking? Join our Weekly Czech Conversation Meetup – a focused, interactive session designed to help you speak more confidently in Czech through fun, practical, peer-based learning. 🎯 What to expect: Structured, casual Czech-speaking sessions Fun language games, real-life scenarios, group challenges Peer-to-peer learning (no teachers – just motivated learners!) No grammar overload – just speaking and using what you know 🧠 Who is this for? A1 and A2 level learners (not for absolute beginners) Expats in Prague who want to practice Czech in a supportive space People who are ready to actively participate – speaking is a must! 📝 Important: Preparation is required. Each week, you’ll get a short prompt or task in advance. Everyone must come ready to engage. 💬 Why join? Build real-life speaking skills Break the fear of using Czech Meet other motivated learners Get out of your Duolingo comfort zone! 🌍 This is a focused Czech-only session, happening from 19:30 to 21:30, as part of the larger Uninstall Duolingo Language Exchange night every Thursday.

AKCE JEN PRO ZVANÉ 🤖 Ahoj, v rámci setkávání Research Tuesday jsme naplánovaly Friday special. Cítíme už nějakou dobu, že naše researchová komunita má potřebu sdílet, co nového nám do práce přinesla umělá inteligence, jak nám mění výzkum pod rukama. Chceme si povídat, chceme si navzájem sdílet, chceme vytvořit mapu, kam si zaneseme, v jakých fázích výzkumu a jakým způsobem používáme AI a co nám funguje dobře a co až tolik ne. Pracovat a sdílet se bude převážně v menších skupinkách a výstup se na konci odprezentuje ostatním. Mapu pak pravděpodobně dáme k dispozici komunitě. Pátek 19. června 9 - 12 do Slevomatu v pražském Karlíně. Setkání se koná pouze offline, a kapacita je omezená na 30 pozvaných. Žádná velká příprava netřeba, jen teď dávej víc pozor, kdy a jak v rámci výzkumného workflow používáš AI a jak ti to funguje, ať se o to můžeš podělit s ostatními. **🕒 Agenda:** * **08:30 AM** – Otevření dveří & ranní networking * **9:00 AM** Workshop * **12:00 PM** – Závěr & možný společný oběd **🧸 Hlídání dětí na vyžádání:** Research Tuesday stavíme na tom, že profesní rozvoj má být přístupný všem. Chceme podpořit i rodiče malých dětí, aby mohli zůstat v kontaktu s oborem a potkávat se bez zbytečných překážek. **Máte zájem o hlídání?** Rádi ho na místě zajistíme, ale potřebujeme vědět, jestli o něj bude zájem. Dejte nám vědět v komentářích nejpozději do pondělí 15.6. do 8:00, jestli službu využijete a pro kolik dětí. Podle toho rozhodneme, jestli ji zajistíme. **Rezervace:** Zarezervuj si místo včas. Pokud se ti plány změní, prosíme, uvolni místo ostatním. **Těšíme se na známé tváře i nové účastníky!** Běla, Ivana, Lucie

In this workshop you will learn to make your own mini (25×25) or small rug (30×40) from scratch! No experience needed and all material provided. Feel free to join alone and meet people on the spot or bring a friend and share the fun! **Due to limited spots reservations are mandatory** - get your ticket on our website: [www.tuftingprague.com/bookings](www.tuftingprague.com/bookings) Workshop is held in Letna, Kostelni 32.

**The BEST Board Game Event In Prague 🤠🍺** Every Sunday, we offer a curated menu of 4–5 featured strategy games (check out the event photos below for this week's lineup!), a non-stop open table for casual games, and a vibrant space for chill socializing. **Arrive at 18:00, grab a drink, and meet Luboš** (our Game Master). Tell him your vibe and experience level, and he’ll match you with the perfect table. Whether you want to lock into a long-format featured game, jump into fast-paced open gaming, or just drop by for drinks and conversation, there's a perfect spot for you! 🚀✨ 📍**The Down Under:** https://maps.app.goo.gl/uwi9GeuY27BkqnPn9 **✅ 100% FREE Entry:** No partners, experience, or games needed. We handle all the table matchmaking, setups, and rules! **✅ 19:00 Sharp:** The long-format featured games lock in and begin. *Arriving late or leaving early? You can jump into the Open Gaming Zone at any time.* 🎲 **✅ Support the Venue:** There is no entry fee, so please support the pub by ordering some of their awesome food and drinks! 🍔🍺 Hosted in English. Casual snapshots are taken during the event.

**The most enjoyable way to meet new people without going clubbing! ✨** This is an OPEN-AIR event! 🌤️ We jump straight into simple group dances so everyone is moving and laughing together right from the start. Later, we spend 15 minutes learning a few easy steps—mixing European classics, modern folklore, and chill Latin vibes. There are no rules to follow or pressure to perform. It’s just a relaxed evening to enjoy great music, move your body, and make new friends. **✅ No experience needed** → As long as you can sway to the basic rhythm, you belong. **✅ No partner needed** → We use fun group mixers and rotate constantly. 📍 **Vítkov**: https://maps.app.goo.gl/k2mkwRY2b133NQJx8 **🕒 SCHEDULE:** 18:50 - Arrival **19:00 - The Music Starts! 🎶** 19:45 - 15 minute class 21:00 - Wrapping up + Socializing (Bistro Vítkov) After we wrap up we go to a restaurant/bar close by for chill socializing. 🎟️ Cost: FREE - If you love the vibe, hit us with a 5-star review. No words needed. 👟 Wear comfy sneakers or go completely barefoot. Pack a water bottle to stay hydrated and a hoodie when the sun goes down. Tančírna (pronounced tahn-cheer-nah) comes from the Czech word "tančit" (to dance) and literally means "a place for dancing". If you love to move and want to make new friends, simply show up on Friday and let’s dance!! 💃

Hola tod@s! Tenemos otra reunion este viernes en el Pivni Bar! Sois muy bienvenidos!

Looking to meet new people in Prague and play badminton in a relaxed atmosphere? Join our social badminton event – perfect for meeting people and having fun while playing. 🏸 All levels welcome 🏸 No experience needed 🏸 We mix players so everyone gets a game This is not a competitive tournament – the focus is on socializing and enjoying the game. 📍 Location: Badminton Aréna Skalka 🕒 Time: 20:00–23:00 💰 Price: 350 CZK / 250 CZK with Multisport Spots are limited. 👉 Reserve your spot here: [https://www.bananasport.cz/sportovni-udalost/14](https://www.bananasport.cz/sportovni-udalost/14)

This group is for anyone who writes - for any reason. Have a thesis or article you need to write? Trying to finish a novel or an academic paper? This group is for you. We are currently meeting in-person at Locus Workspace. If you have any questions, contact Sonya Lano here or on Facebook or Messenger (https://www.facebook.com/sonya.lano). We start at 9:00, introduce ourselves, and share a few words about what we're working on and what we hope to accomplish during the session. At the end of the session, you can give us a brief recap of how it went. We'll break at noon. The afternoon session starts at 2:00 pm. You're welcome to join both sessions or just one. Please come as close to 9:00 as you can if you come for the morning session. If you come to the afternoon session, we are usually back by about a quarter to 2:00.

**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

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant.

**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 Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. 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

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD

This is an in-person meeting. At this meeting you will get answers to depression and anxiety. Find out the source of them and how to get rid of them. Did you know that unwanted emotions like anxiety, depression, unhappiness, loneliness, hopelessness, anger, fear, or feelings of irritation don’t just fall on you for no reason. They are not random occurrences that simply happen to people's minds. They are definitely not due to a chemical imbalance in your brain from some nebulous chemical reaction "by chance". Your negative emotions are the symptoms of the painful experiences that you have which are not healed, and which are still affecting you. The effects of these painful experiences are exacerbated by the pressures or difficulties of the other problems in your life. Come to our Meetup, where we can introduce you to some of the knowledge, tools and techniques of the breakthroughs in the field of the mind that we can apply to this ever important area of life. 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 created by the Hubbard Dianetics Foundation of Central Ohio and Church of Scientology of Central Ohio.

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).