Vue.js

**Enlace streaming:** [https://youtube.com/live/GfDVntpxcO0?feature=share](https://youtube.com/live/GfDVntpxcO0?feature=share) **Formulario acceso oficinas:** [https://forms.gle/MU5nEwqjGBCoPPfo6](https://forms.gle/MU5nEwqjGBCoPPfo6) En este meetup tenemos planificadas dos charlas breves de Kotlin complementarias. **1) Errores en Kotlin: más allá del try-catch:** Una constante en toda aplicación que se desarrolle es la necesidad de gestionar errores. La gestión de errores se puede hacer de muchas formas, y trataremos algunas de las mismas que nos han sido útiles, incluyendo herramientas de programación funcional. **2) Slides as Code: tu presentación también compila:** Con Kotlin se pueden hacer muchísimas cosas, y algo que seguramente no sabías es que también *se pueden hacer diapositivas*! En esta charla te explicamos cómo. **Info del evento** El evento será en **las oficinas de Basetis, en la Pedrera** (Casa Milà). El **acceso** será de 18:30 a 19:00 por **carrer Provença** (no la entrada principal), y **la charla empezará a las 19h**. Daremos más detalles para el acceso cuando se acerque la fecha. **Idioma:** la charla será en castellano. Haremos streaming de la sesión para quien no pueda asistir. Que **sólo respondan que asistirán quienes vayan presencialmente**.

This is the second of a series of meetups dedicated to exploring the exciting world of **[OpenTelemetry](https://opentelemetry.io/)** within the cloud-native ecosystem. Whether you're just curious about observability or already a seasoned OpenTelemetry user, this series will offer valuable insights, practical knowledge, and opportunities to connect with fellow enthusiasts in the Barcelona cloud-native community. **Location** [Glovo](https://about.glovoapp.com/): c/Llull 108\, Barcelona \| [https://maps.app.goo.gl/371qvgfN5jj7atpcA](https://maps.app.goo.gl/371qvgfN5jj7atpcA) ** Here's a sneak peek of the agenda:** **18:30:** Check-in and welcome **18:45:** ️ "**The 44% Price I Paid for Observability**" by **[Adrián Pastén](https://www.linkedin.com/in/adrian-pasten/)**, Software Engineer at [ApiumHub](https://www.linkedin.com/company/apium_hub/)**.** I added OpenTelemetry to find performance bottlenecks in my Kubernetes PHP application. Instead, OTEL became the bottleneck - consuming 44% of my system capacity and dropping throughput from 2,519 to 1,400 requests per second. Through live metrics and real production scenarios, I'll share what auto-instrumentation actually costs, when observability tools become performance killers, and practical strategies for getting the insights you need without destroying the speed you fought for. **19:15:** ️ **"Efficient Tail Sampling at Glovo"** by **[Dani Medina](https://www.linkedin.com/in/dani-medina-3084b878/)**, Principal Software Engineer at [Glovo](https://about.glovoapp.com/) In this insightful talk, Dani delves into how Glovo has implemented a tailored tail sampling strategy to achieve two critical objectives: keeping operational costs under control and empowering developers to identify error traces effectively. **19:45 - 20:30:** Networking, Snacks, and Drinks We appreciate **[Glovo](https://about.glovoapp.com/)**'s generosity in hosting us at their Barcelona office and providing snacks & refreshments. Thank you so much See you there!

Todos los amantes del voley playa que lleven más de 6 meses jugando o entrenando son bienvenidos. A mejorar la técnica y los desplazamientos en el terreno .

Todos los amantes del voley playa que lleven más de 6 meses jugando o entrenando son bienvenidos. A mejorar la técnica y los desplazamientos en el terreno .

Volvemos a la carga con mucho teatro y más ganas que nunca de poder compartir este maravilloso arte con vosotros. Teatro en estado puro al alcance de todos! El nivel inicial tiene una gran importancia en el camino del desarrollo teatral, ya que en este primer contacto con el teatro nos basamos en comprender el hecho teatral en sí. Para ello realizamos una formación actoral básica, basándonos en las técnicas y disciplinas básicas de las artes escénicas, así como en los conocimientos indispensables para cualquier actor. Trabajo de improvisación, voz, expresión corporal, paleta emotiva, escenas, creación y trabajo de personajes, creación propia, desbloqueos etc. Siempre trabajando de una manera lúdica, el alumno podrá investigar las distintas herramientas escénicas que se pueden dar en el espacio teatral, mejorar la expresividad, potenciar la creatividad, el trabajo en grupo, la autoestima, y mucho más. Tomará conciencia de su cuerpo, del espacio, aprenderá de forma práctica como es la relación con los objetos, la creación de personajes y el trabajo de la improvisación, mejorando la expresión corporal y oral. Pero sobretodo DIVERTIRSE HACIENDO TEATRO, ese es nuestro principal objetivo. No os preocupéis si no hay mucha gente apuntada por meetup, la actividad se hace igual porque tenemos más gente apuntada por otros lugares.

You thought we would skip February? NO! We're back, baby! February Meetup is here! Let's gooo! We have some amazing speakers, and pizza and beer will be available after the event. ────────── **18:30: Welcome** Grab a beer, a snack, and a seat until everybody arrives! **18:45 Intro by Host Neciu Dan and Giorgio Polvara from Perk** **19:00 The 2600€ Mistake: How we saved 90% on Cloud Costs by breaking the SSR Myth** Speaker: [Danilo Velasquez](https://www.linkedin.com/in/ACoAAAXUQZYBfPgAdfwWiNG72HHc5rtHIS9pAWY), Staff Web Platform Engineer and Consultant When our Astro/React migration reached 8,000 RPS, 100 pods couldn't prevent the crash loops. Discover how mastering Node.js internals—Cluster API, file descriptors, and strict timeouts—slashed our bill from 2,850€ to 250€ while handling 1.6B monthly views. A war story about why "frontend-only" thinking fails on the server. **19:25 400 Tech Leads. Same problems. None of them technical.** Speaker: [Anemari Fiser](https://www.linkedin.com/in/ACoAAAsj0FIBwsd5kRTr2_wWLQKe-vFNZDCtNlE)\, O’Reilly Author \| Engineering Leader After training and coaching more than 400 tech leads across companies and industries, one pattern keeps repeating: when tech leads struggle, it’s rarely a technical gap. In this talk, Anemari Fiser shares the most common challenges tech leads bring into coaching sessions - overload, unclear expectations, ownership confusion - and assumed alignment, and why “getting better technically” almost never fixes them. Drawing from real coaching and training examples, the talk explores where tech leads get stuck, what they think the problem is, and the small but meaningful shifts that help them move forward. **19:50: Drinks and networking!** Do you want to talk at this meetup? Reach out to Dan Neciu [on LinkedIn](https://www.linkedin.com/in/neciudan/) And please help us spread the news and grow the community: **20:55 Meetup finished** **(FOR EARLY ACCESS: WE ALWAYS POST FIRST ON SOCIAL MEDIA)** [Twitter(X)](https://x.com/ReactJsBCN) [BlueSky](https://bsky.app/profile/reactbarcelona.bsky.social) [LinkedIn](https://www.linkedin.com/company/reactjs-barcelona/) [Instagram](https://www.instagram.com/reactjs_barcelona/) ────────── **Sponsors:** **Perk** The intelligent platform for travel and spend. Time-consuming bookings, endless approvals, hundreds of receipts: Perk is designed to eliminate the work behind the work that is costing your business trillions and draining your teams' morale and productivity. At Perk, we call it shadow work. By automating bookings, expenses, and invoice processing, Perk takes care of shadow work so your teams can get down to business—all while keeping you in control. Founded in 2015, we’re trusted to power real work for over 10,000 companies worldwide, including Wise, On Running, and Breitling, and are backed by first-class investors such as SoftBank, Kinnevik, Felix Capital, Target Global, LocalGlobe, Spark Capital, and Noteous Partners. Work with Perk, and unlock the full potential of your people and your business. ────────── **Join the Master Security Course for FREE!** Module 1 is live now — **Exploits** — completely free to access. * Understand how common vulnerabilities actually work * Learn to identify and prevent security flaws in your code * Get practical, real-world examples you can apply immediately * 9 more modules coming, covering the full security landscape This is just the beginning — start building security expertise today. [Join here](https://neciudan.dev/master-security)

**THE WHITE VILLA · International Rooftop Evening** ✨ An informal international gathering in a private villa above Barcelona. This evening is designed for natural conversations in a carefully curated setting. People from different backgrounds come together to meet, talk and connect without pressure, fixed dynamics or forced icebreakers. You move freely between conversations, speak at your own pace and let the atmosphere unfold naturally as the sun sets over the city. It’s a relaxed way to practice languages and build real connections while sharing a drink in a space that feels both welcoming and intentional. As the evening progresses, the energy shifts gently from conversation to shared moments, always maintaining a balanced and respectful atmosphere. Ideal for: **– Meeting international and local people** **– Practicing languages in real-life context** **– Expanding your social circle** **– Discovering a hidden hillside venue** This is not a class, and it’s not a loud party. It’s a social evening in a private villa with panoramic views over Barcelona, where work, culture and social life blend naturally. Price: 10€ **Includes up to three glasses of wine. Payment at the entrance.** **[More information](https://www.meetup.com/the-white-villa/events/313189775/)**

Hey peeps! Join us for an evening Hack & Tell with Alvaro Moya and Nick Zervoudis at [Harbour.Space Institute of Technology](https://maps.app.goo.gl/8GuYFh6XY3NtL7D28) in Poblenou - two focused, practical talks plus plenty of time to meet other AI engineers and founders! Alvaro will show his approach to getting coding agents produce the results we want at high quality with a standardized approach, while Nick will share how he built an OS that evolves around his needs with a combination of AI models and modern knowledge bases. **Agenda** 18:30 – Doors open & arrivals 19:00 – Talk 1: Alvaro Moya, Talk 2: Nick Zervoudis 20:30 – Open networking at Ovella Negra **Location** [Harbour.Space Institute of Technology](https://maps.app.goo.gl/8GuYFh6XY3NtL7D28) [Carrer de Rosa Sensat, 9-11, 08005 Barcelona](https://maps.app.goo.gl/8GuYFh6XY3NtL7D28) 6th floor **Cost:** Free (RSVP required) *** **Speaker 1: [Alvaro Moya](https://www.linkedin.com/in/alvarormoya/) \- Spec Driven Development with AI** AI can generate large amounts of code, but without clear specifications it still produces fragile and inconsistent results, and the real difference between fast output and reliable features lies in how the problem is defined. This talk introduces Spec-Driven Development with AI, a new paradigm that accelerates the whole development workflow, from vague ideas to production-ready code, all while increasing quality. **Speaker 2: [Nick Zervoudis](https://www.linkedin.com/in/nzervoudis/) \- Building a Personal OS That Thinks the Way I Do** Nick is building a personal operating system using Claude Code, Wispr Flow, and Obsidian - processing all his voice notes, meeting transcripts, articles, and ideas to scale his consultancy. It all runs under a single repo built off plain markdown files. See you soon!

Data and AI only matter when they drive and inform real product decisions that improve learners’ and tutors’ experience. At [Preply,](https://preply.com/en/about-us) we use data, rigorous experimentation, careful and scientific measurement, and applied AI to understand what works, where it works, and why. In this meetup, Preply’s data and AI team members will share concrete case studies from systems running in production, focusing on impact measurement, AI-driven marketplace decisions, and machine learning applied to real learning interactions. You will also have the chance to meet with Preply’s recruitment team to understand open roles in our growing data squad, and learn about which role is the best fit for you **Agenda:** **18:30-19:00** Arrival and Networking **19:00-19:05** Introduction, Ana Peleteiro Ramallo (VP of Data and Applied AI) **19:05-19:25** - **Preply Lens: Building AI Systems to Understand Learning**, Aditya Joshi (Senior Data Scientist) **19:25-19:50** - **Measuring Product Impact**, Jonny Adams (Staff Data Scientist) & Frieder Kropfhäußer (Staff Data Scientist) **20:00-20:20** - **How AI Improves Preply’s Marketplace,** Jacek Wasilewski (Principal Applied AI Scientist) **20:20-21:00** \- Drinks and Networking **Who should attend:** This meetup is designed for data and AI professionals, especially those with hands-on experience in industry delivering products. *After the talks, we’ll leave time for questions and open discussion, followed by informal networking with the speakers and other attendees We’re looking forward to meeting you. Bring your questions, your opinions, and your healthy skepticism – the discussion is very much part of the meetup.*

El *29 de desembre de 2026* es compleixen 150 anys del naixement de Pau Casals, **una de les figures més universals de la cultura catalana i un dels músics de referència indiscutible de la música del segle XX**. *Violoncel·lista excepcional, director d’orquestra, compositor, pedagog i humanista,* Pau Casals és recordat no només pel seu talent musical extraordinari, sinó també pel seu ferm **compromís amb els valors de la llibertat, la democràcia i la pau**, que van marcar profundament la seva trajectòria vital i artística. Amb aquesta premisa, desde **Cultura i Oci**, volem cel·lebrar aquest aniversari amb una escapada molt especial a on, ens aproparem al Vendrell per oferir-vos **una proposta que combina la visita guiada al Museu Pau Casals amb una audició de violoncel amb vistes al mar mediterrani**. Una experiència vital i musical que ens apropa a la figura de Pau Casals en tota la seva dimensió d’home de pau i de músic. El **Museu Pau Casals** està ubicat a la casa d’estiueig que Pau Casals es va fer construir a la *platja de Sant Salvador*, al municipi del Vendrell. La seva visita ens permetrà descobrir la vida i el llegat humà d’un dels músics més importants del segle XX i alhora gaudir d’un espai patrimonial únic. **Gaudirem d’una visita guiada i no sols això**, ja que al acabar, podrem gaudir d’una **audició de violoncel en directe** amb unes vistes espectaculars del mar i la platja, tot aixó acompanyat de les peces de l’artista, tot un plaer visual i auditiu! **PERÓ AQUI NO ACABA TOT!** El Museu Pau Casals compta amb el **Restaurant Vil·la Casals**, ubicat a les antigues cases de convidats que Pau Casals va fer construir el 1929. Es tracta d’un espai únic, amb una magnífica terrassa amb vistes al mar i on podreu gaudir d’un entorn privilegiat i ple d’història. I es aquí a on hem reservat per dinar aquest dia, per posar un punt i final d’una manera especial i original! **CONSULTEU MENÚ I PREU A LA PART FINAL DE LA DESCRIPCIÓ DE L’ACTIVITAT.** *A on? Quan?* **DATA :** 01/03/2026 – **HORA :** 08:00h – **LLOC (NOU PUNT!)** : CARRER TRAFALGAR, 56, 08010, BCN **TORNADA:** Aprox. 18:00 **PREU:** 48€ **PREU VIP:** 45,6€ *✔️ Que inclou?* ✔ Bus privat ✔ Visita guiada Museu Pau Casals. ✔ Audició Violoncel en directe. ✔ Acompanyament guia Cultura i Oci Barcelona ✔ Assegurança d’accidents i RC ✔ IVA 21% *❌ No inclou:* DINAR A RESTAURANT (Dinar a Restaurant Vil·la Casals, PREU: 29€) **MENÚ RESTAURANT VIL·LA CASALS** **PICA-PICA PER COMPARTIR** ✔ Amanida de formatge de cabra amb fruits secs ✔ Seitons a l’andalusa ✔ Musclos del Delta a la marinera **PLAT PRINCIPAL A ESCOLLIR** ✔ Llobarro a la graella amb melós i escalivada ✔ Paella de carxofes, sípia i calamar ✔ “Abanico” ibèric a la brasa amb patates fregides **POSTRES** ✔ Profiteroles, flam, púding, iogurt, fruita, crema de llimona o crema catalana *Aigua, vins D.O. Catalunya i cafè* Preu: 29,00 € (IVA inclòs) ***COM RESERVAR PLAÇA?*** ✔ Et pots apuntar directament per la nostra pagina principal (https://culturaiocibarcelona.com/). ✔ A la mateixa pagina pots realitzar el pagament a traves d’una plataforma segura amb tarjeta, PayPal o Bizum. També pots fer transferencia bancaria al següent nº de compte bancari o inclús fer un BIZUM:**COMPTE: ES4401820846420201850639 BBVA, Maria Vallverdú Segura**, o Bizum: **Maria Vallverdú Segura 629813322** – referència: **PAUCASALS, i el teu nom + COGNOM** **APUNTAR-SE SENSE REALITZAR EL PAGAMENT NO ASSEGURA PLAÇA A L’ACTIVITAT.** *\*No es faran devolucions en cas de no presentar-se a l’activitat o no avisar de la NO asistencia 48 hores abans de l’activitat.* Per qualsevol dubte ens pots enviar un missatge a través de la web, al mail gaudeixsensepressa@gmail.com o al Whatsapp d’informació i reserves 650 83 54 70.

**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** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

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/

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Meeting @ Improving's office in Downtown Columbus, near Cosi. Parking is paid, food & drink are free! This time we're hanging out after the long winter break. We are going to look at a group-member's project used to help learn the fundamentals of Go, and if time allows, we can take a look at how we like to build Go projects using AI.

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 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 topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

Join us for a fun Saturday evening starting with dinner at Ranchero Kitchen at 6:30 PM, where we’ll be supporting an immigrant-owned local business. Pupusas: Beans, Potatoes, Veggie Homemade juices: Passionfruit, Tamarind, Horchata, Pineapple-cashew After dinner, we’ll head to Skate Zone 71 from 8:00–10:30 PM for skating, music, and good vibes. Come hungry and ready to roll! Locations: Ranchero Kitchen 984 Morse Rd Columbus, OH 43229 (Same plaza as Ohio BMV license bureau) Skate Zone 71 4900 Evanswood Dr Columbus, OH 43229