Concurrent Programming

We've got 2 brilliant lectures on real production case studies on reducing memory footprint by order of magnitudes. One from DoubleVerify, using hackie but efficient data structures, and the other from Next Insurance with 4 real world methodologies shown on stage. Thanks to **DoubleVerify** for sponsoring and hosting the event! **AGENDA** 18:00–18:30 **Mingling, food, and drinks** 18:30–18:40 **Opening words** 18:40–19:25 **Beautiful Code Is Overrated: How "Ugly" Engineering Saved Geo at Scale / Alex Cherny - DoubleVerify** 19:30–20:15 **Bulletproof Cookbook to Reduce Your Service's Memory** **/ Haim Yadid - Next Insurance** **Beautiful Code Is Overrated: How "Ugly" Engineering Saved Geo at Scale** We often celebrate clean, elegant architecture, but when data grows 30× overnight, beauty doesn't keep the lights on. This talk walks through a real-world case study of how the Geo traffic service at DoubleVerify broke under 500M IP ranges and how a brutal, byte-level approach outperformed every elegant solution. I'll share the challenges, trade-offs, and the unconventional design choices that helped us slash ramp-up time from 70 minutes to under 3 and memory from 193GB to 13GB. Sometimes, "ugly" is what scales. **Alex Cherny / DoubleVerify** Alex Cherny is a Director of Software Engineering at DoubleVerify, where he leads large-scale Traffic systems operating at millions of requests per second. He has extensive experience building and optimizing JVM-based distributed systems under strict latency, memory, and reliability constraints. Alex focuses on pragmatic performance engineering and believes that clean abstractions are valuable—until scale forces you to break them. **Bulletproof Cookbook to Reduce Your Service's Memory** In recent months, I’ve been working on a Java service that constructs and processes large in-memory object graphs. The memory consumption has become substantial. As a result, through a systematic analysis and targeted optimizations, I have managed to cut the memory footprint by more than 60%. Leading to cost reduction. In this session, I’ll guide you through the journey - from identifying the memory issues using Eclipse MAT to implementing practical optimizations that led to these savings. You’ll learn how to apply similar techniques to your own services to reduce resource usage and improve performance. At the end of the talk, I will also mention several optimizations that improved runtime performance by a factor of 4. **Haim Yadid / Next Insurance** A software engineer with over 30 years of experience in various technology fields: software development, team management, software architecture, HPC and algorithmic research. In my day job I work in Next Insurance as an engineering fellow where I am involved in numerous cross R&D strategic projects. Before that has been focusing for 8 years on Java platform performance optimization as an independent consultant and was involved in more than a dozen optimization projects. I am a Java Champion and one of the founders of Java.IL, the Israeli Java user group. **FOOD** Light food, light drinks, and beer will be served courtesy of **DoubleVerify**. **RECORDING** We are recording, as always, this meetup and uploading it to our YouTube channel (be sure to subscribe), but please keep in mind asking questions about stuff you don't understand is only possible when you attend the live event. **ADDRESS** Alon Tower 2, Yigal Alon 94, Tel Aviv Floor 27

TAMI open-fa-sure (Open Night) is a great time to visit the space and get to know how things work. If you want to double check whether someone is in the space, call 03-3726660. ========== TAMI wiki: [https://telavivmakers.org](https://telavivmakers.org) TAMI main Telegram channel: [https://t.me/+0t5M0-jK9iIwZmM8](https://t.me/+0t5M0-jK9iIwZmM8)

לצפייה במפגשים הקודמים: [https://www.youtube.com/playlist?list=PLWYO6ItABnqsaUHKt7BXFaZyc319UOHDp](https://www.youtube.com/playlist?list=PLWYO6ItABnqsaUHKt7BXFaZyc319UOHDp) יום שני נפגשים בשרונה להמשיך לקרוא יחדיו ולנהל דיון על הספר: **The Ominous Parallels** נכתב על ידי לאונרד פיקוף ויצא לאור בשנת 1982. הספר סוקר את התרבות והאקלים הפילוסופי בגרמניה שהוביל לעליית הנאציזם ולשואה. הספר מציג כיצד תהליכים תרבותיים ופילוסופים דומים מתחוללים בארה״ב ובמערב. את הספר נקרא באנגלית והדיון יתקיים בעברית. את המפגש יוביל אייר רייכל, עמית מרכז איין ראנד בישראל ההשתפות כרוכה בתרומה למרכז איין ראנד בישראל. 20 ש"ח למפגש. חינם: למשתתפים שתורמים תרומה קבועה של 50 ש"ח ומעלה בחודש. [קישור לתרומה](https://www.aynrand.org.il/donate) מלאי ספרים לרכישה אמור להגיע בקרוב. מיקום: וויוורק שרונה מרקט הוראות כניסה: יש להיכנס בכניסה א' של שרונה מרקט, מול מסעדת "מקסיקנה" יש דלת לחדר מדרגות, יש לעלות לקומה ה3 ולצלצל לפתיחת הדלת לאייר רייכל 050-5210025. ניתן להגיע באמצעות הרכבת הקלה - תחנת יהודית. למגיעים ברכב, חניה מומלצת ב"חניון פלטיניום" (מופיע בוייז). או בחניון "מילניום" (שקצת רחוק יותר) ב10 ש"ח עם אפליקציית סנטרל פארק. לתיאום הגעה בפעם הראשונה ולמתלבטים ניתן ליצור קשר עם אייר בטלפון ובוואטסאפ 050-5210025

**מה בתוכנית?** 18:00-18:25 – התכנסות, כיבוד ומינגלינג 18:25-18:30 – פתיחה: מרים ומני 18:30-18:50 - מה צפוי לנו בגרסה 4 של האדיטור? מרצה: רועי טל 18:50-19:10 – הפסקה ומינגלינג 19:10-19:40 -עשה זאת בעצמך: כלים להכוונת מודלים של שפה לתשובות נכונות פרויקט אישי להוספת נתונים מובנים בעזרת פורטל המפתחים של יוסט (LLMs,Structured Data,Yoast Developer Portal) מרצה: ורג׳ה דאס ורג'ה עובדת כמהנדסת תוכנה ב-Yoast והרצתה במספר כנסים על איכות קוד, פיתוח בוורדפרס ו-SEO. היא תורמת לקוד פתוח ומתעניינת בכלים וטכניקות לייעול כתיבת קוד ושיפור איכות הקוד. 19:40-20:00 – סיכום ומינגלינג סיום Event will be held in Hebrew. 18:00–18:25 – Arrival, refreshments and mingling 18:25–18:30 – Opening remarks: Miriam & Menny 18:30-18:50 - What's in store with Elementor V4? 18:50–19:10 – Break & mingling 19:10-19:40 - Do it yourself: tools for guiding LLMs toward correct answers - a personal project for adding Structured Data using the Yoast Developer Portal Speaker: Vraja Das - Vraja works as a software engineer at Yoast and has spoken at several conferences about code quality, WordPress development, and SEO. She contributes to open source and is interested in tools and techniques for streamlining code writing and improving code quality. 19:40–20:00 – Closing remarks & mingling

**Join Us for the next Israel LLVM Meetup!** We’re thrilled to invite you to an exciting evening, where we’ll dive deep into cutting-edge compiler technologies and hardware-aware optimizations. This meetup brings together the LLVM community for insightful talks, networking, and discussions on the future of compiler infrastructure. Expect a diverse lineup of sessions covering Triton, MLIR, and LLVM optimizations powered by hardware metrics — perfect for compiler developers, performance engineers, and anyone passionate about high-performance computing. 📅 **Date & Time** **February 18th, 2026** • **17:00** – Arrival & Networking • **17:30** – Talks Begin • **19:00** – Wrap-up 📍 **Venue** [Jem’s Hertzliya](https://share.google/5taousLhsVfY7ox0r) 🎤 **Speakers & Topics** **• Jonathan Cohen - Compiler Engineering Manager - Apple** Title: “Supercharging Compiler Optimization Remarks with Hardware Metrics” Abstract: This session demonstrates how to turn hardware counters with compiler optimization remarks into performance wins. It combines performance analysis metrics with enriched Optimization Remarks to debug and mitigate performance bottlenecks - a challenging task for compiler developers or performance engineers. **• Michael Zuckerman - AI SW Engineering Manager – Majestic Labs AI** Title: “Triton for RISC-V: Bridging PyTorch to RISCV with MLIR & LLVM” Abstract: Triton is a powerful open-source programming model originally developed to generate highly optimized GPU kernels for deep learning workloads. In this talk, I present an extension of Triton to target the RISC-V vector architecture, using MLIR and the LLVM toolchain as the compilation backbone. This work creates a practical bridge between modern PyTorch-based machine learning frameworks and emerging RISC-V hardware platforms, enabling efficient and portable execution of AI workloads beyond traditional GPUs. The proposed integration allows PyTorch models to be lowered end-to-end into RISC-V vector instructions, leveraging open compiler infrastructure to significantly reduce the effort required to enable new hardware targets. I will show how Triton kernels, TorchDynamo graph capture, TorchInductor scheduling, and MLIR/LLVM code generation were aligned into a unified backend that supports rapid bring-up, iterative optimization, and transparent performance tuning. This talk demonstrates how an open, modular compiler stack can accelerate the adoption of flexible hardware architectures in machine learning, while preserving high performance and developer productivity.

***\*\*To register for the meetup, please register via Luma using the link below\*\**** Register via Luma -> [https://luma.com/1vzetmmg](https://luma.com/qxaze4a6) 18:00 - Mingling 🎉, SWAG 🎁, pizza 🍕, and beers 🍻 18:30 - lectures 19:50 - Give a way one Node.TLV 20025 ticket 🎉 # [Daniel Clayborough](https://www.linkedin.com/in/daniel-clayborough-894496103/overlay/about-this-profile/?lipi=urn%3Ali%3Apage%3Ad_flagship3_profile_view_base%3BVog6gDcMRzqVPME9ZEkz1w%3D%3D) \| **Frontend Team/Tech Lead at Agora** \| Standardizing Large JS Codebases in the AI Era # ​\*\*[Ariel Shulman](https://www.linkedin.com/in/ariel-shulman/overlay/about-this-profile/) \|\*\* Software Engineer at Factify \| **Postgres Beyond the Rows** ​You’re likely underutilizing the most powerful piece of your infrastructure. ​While most devs treat Postgres as a reliable container for rows and columns, it’s actually a sophisticated engine capable of handling complex data challenges. ​From mastering deep, nested hierarchies with lightning-fast traversal to image deduplication and similarity search at scale (no vectors!). ​In this session we will move beyond standard queries to show how built-in indexing and specialized data types can replace external microservices, and simplify your stack. Come see why the most powerful tool in your stack is likely the one you’re already running. ## ​\*\*[Nadav (Kremer) Beker](https://www.linkedin.com/in/nadav-kremer/overlay/about-this-profile/) \|\*\* Tech Lead at **Finonex**\| **How Observability Killed My Performance** ​Logs, traces, metrics, correlation IDs — observability promises clarity when systems get complex. But in Node.js, these tools are not free, and used without care they can become a serious performance bottleneck. In this talk, I’ll share real-world lessons from production Node.js systems where adding observability actually degraded performance. We’ll look at the hidden costs of logging, async logging, AsyncLocalStorage, distributed tracing, and high-cardinality metrics — and why these issues often only appear under real load. ​ ​-------------- Kindly be informed that attendance at the meetup is on a first-come, first-served basis until capacity is reached. Although a place has been reserved for you (after click on attend button), please note that it **does not guarantee your spot.**

Embedded Israel and RISC-V International are happy to invite you to a joint event, this February in Bar-Ilan university. Agenda: 16:30 - 17:00 Networking 17:00 - 17:30 RISC-V Overview 17:30 - 18:00 RISC-V at Speedata 18:00 - 18:30 RISC-V at NVIDIA - Elad Perez & Adi Maymon 18:30 - 19:00 Tesla RISC-V Chip and other Automotive/HPC/AI RISC-V solutions 19:00 - 20:00 Pizza & Beer (Thanks to Synopsys) To attend the event you have to also register here: [https://community.riscv.org/e/mrf3fe/](https://community.riscv.org/e/mrf3fe/)

\#\# בנה מחשב משלך בלי לקנות כלום\! \*\*רוצה לחסוך כסף ולבנות מחשב משלך?\*\* \*\*הצטרף לקורס בנית/הרכבת מחשבים ייחודי מבוסס על שימוש בזבל דיגיטלי ותוכנה חופשית!\*\* \*\*מה תקבלו?\*\* \* \*\*מחשב ניח שלם, פעיל ועובד\*\* שתיקחו הביתה בסוף הקורס. \* ידע שלם בבניית, הרכבת, התקנת והפעלת מערת הפעלה גניו/ לינוקס תוכנות מחשב \*\*מאפס\*\*. \* \*\*כלים ושיטות\*\* שיאפשרו לכם לתחזק ולתקן את המחשב שלכם בעתיד \*\*בלי צורך לקנות כלום\*\*. \* \*\*הדרכה מקיפה\*\* כיצד להשיג חלקים במחירים זולים או בחינם. \* \*\*קורס מותאם לכל אחד\*\*, ללא צורך בידע קודם. \*\*משך הקורס:\*\*עד 4 מפגשים שתאריכם כבעים במפגש הראשון. \*\*עלות:\*\* 300₪ ! כתרומה Build Your Own Computer Without Buying Anything! Want to save money and build your own computer? Join our unique computer building/assembly course based on the use of digital waste and free software! What will you get? A complete working desktop computer that you will take home at the end of the course. All the needed knowledge of building, assembling, installing, and running GNU/ Linux computer software from scratch. Tools and methods that will allow you to maintain and repair your computer in the future without having to buy anything. Comprehensive guidance on how to obtain parts at low prices or for free. A course tailored for everyone, with no prior knowledge required. Course duration: up to 4 sessions. Dates are decided according to your prefernces. Cost: 300₪! As a donation to TAMI.

Join the Fluent community for a night of language, culture, and connection! Practice over 12 languages with native speakers in a fun, multicultural atmosphere—plus enjoy drinks and meet people from all over the world! 🗣️🍻🎊 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 🎟️ Ticket Prices Available online until 15:00 on the day of the event: Ticket + soft drink – 60 NIS Ticket + beer/glass of wine – 70 NIS [Get your ticket here](https://www.fluent.community/fluent-events/language-exchange-2102) 🚪At the door: Ticket + soft drink – 65 NIS Ticket + beer/glass of wine – 75 NIS 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 🎫 Want to become an Ultimate Fluenter? Pay less for every event and join our exclusive circle of loyal members by getting a Frequent Fluent Card! [Get a Frequent Fluent Card](https://events.fluent.community/credits-store/) 🎫 10-entry card – 420 NIS 5-entry card – 240 NIS Drinks not included, but cardholders get discounted drink tickets at the entrance! 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 ✨ Want to join for free? Become an Ambassador! Ambassadors help others practice their native language for the first half of the evening, and then enjoy practicing other languages during the second half. It’s a great way to give and get value—and attend for free! 😃

We’re excited to invite you to a special Angular TLV Meetup featuring Angular Team updates and more. 📅 Date: February 18, 2026 🕕 Time: 6:00 PM 📍 Location: Palo Alto Networks Offices Yigal Alon St 94a, Tel Aviv, 6789155 Floor 12 🎟️ Free! 🎤 Talks & Speakers 18:00 – Gathering & Snacks 18:30 – 19:00: Angular Team Updates – Web Codegen ScorerEliran Eliassy – CEO & Founder\, E\-SQUARE\.io \| Google Developer Expert \(GDE\) 19:00 – 19:30: "It’s Not You, It’s the Library" – Escaping the Black Box TrapTal Bare – Senior Engineer, Palo Alto NetworksShoval Harel – Senior Engineer, Palo Alto Networks 19:30 – 19:45: Break 19:45 – 20:15: "Why Don't You Get It?" – Why Genius Agents Fail at Basic Web Tasks Lion Levy – Senior Engineer, Palo Alto Networks Hosted with our partners: E-SQUARE.io, Palo Alto Networks, and GDG 🤝 🔗 PLEASE FILL OUT THE FORM BELOWhttps://forms.gle/zwzCiH8iGVTr4Qtd7 Seats are limited, and pre-registration is required. Agenda *** Hosted By Eliran Eliassy, GDG Organizer Shahar Kazaz, GDG Co-Organizer Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-tel-aviv-presents-angular-tlv-february-2026-meetup/.

**TAMI Hacking Nights** \- join TAMI CTF team and practice challenges and CTFs with us \- share your knowledge about ethical hacking techniques and tools \- bring some device to reverse engineer it and explore how it works \- propose a bug bounty program to work on together \- just watch and learn from others The meetings are informal and open to all levels - from total beginners to hardcore CTF veterans. Join our HackaTAMI Telegram channel ([https://t.me/+KAXY_iPcPlpmZTRk](https://t.me/+KAXY_iPcPlpmZTRk)) to discuss what we will do this Tuesday and come to TAMI. ========== TAMI wiki: [https://telavivmakers.org](https://telavivmakers.org) TAMI main Telegram channel: [https://t.me/+0t5M0-jK9iIwZmM8](https://t.me/+0t5M0-jK9iIwZmM8)

NOVA Code and Coffee is an inclusive, informal, co-working session. People of all skill levels are invited. The concept is simple, bring a laptop and ideas, we'll provide the coffee and donuts! Here's how it works: 1. At 10:15 everyone introduces themselves and briefly describes what brought them to Code & Coffee today (project, homework, networking, etc) 2. For the rest of the day, folks work in the communal space on their projects providing one another help and conversation as needed. Oh and they usually drink coffee and tea too! That's it! Hope to see you there! **Location** Our hosts are the Fairfax City Economic Development Building: [10300 Eaton Pl, Fairfax, VA 22030](https://www.bing.com/ck/a?!&&p=d7298231ca2df594df822003f9a93517c788fceefe1fcbb79c8976696e341bc6JmltdHM9MTc1MzIyODgwMA&ptn=3&ver=2&hsh=4&fclid=180d0745-3b7f-69a1-23a2-11433a7868e5&u=a1L21hcHM_Jm1lcGk9MTA5fn5Ub3BPZlBhZ2V-QWRkcmVzc19MaW5rJnR5PTE4JnE9RmFpcmZheCUyMENpdHklMjBFY29ub21pYyUyMERldmVsb3BtZW50JnNzPXlwaWQuWU44NzN4ODI4MTk2Mjg0NTk5MDM4MTU0MiZwcG9pcz0zOC44NjE0NDYzODA2MTUyMzRfLTc3LjMwMjE3NzQyOTE5OTIyX0ZhaXJmYXglMjBDaXR5JTIwRWNvbm9taWMlMjBEZXZlbG9wbWVudF9ZTjg3M3g4MjgxOTYyODQ1OTkwMzgxNTQyfiZjcD0zOC44NjE0NDZ-LTc3LjMwMjE3NyZ2PTImc1Y9MSZGT1JNPU1QU1JQTA&ntb=1) Conference Room A- Large, Floor 1 This is a new venue for us, so give us some time to get more details about it. Driving is the best option. There is plenty of free on-site parking. Otherwise, we are a 22 minute bus from the Vienna Metro Station. **Sponsored by:** Thank you [Fairfax City Economic Development](https://gofairfaxcity.com/) and [Mason Enterprise Center](https://enterprise.gmu.edu/) for making this event possible! **Thank you so much to our wonderful sponsors!** Organized by [DMV Petri Dish](https://www.dmvpetridish.com/) **[Code of Conduct](https://github.com/NoVACodeCoffee/admin/blob/master/code-of-conduct.md):** We value the participation of each member of the community and want all attendees to have an enjoyable and fulfilling experience. To make clear what is expected, all delegates/attendees, organizers, and volunteers at any Nova Code & Coffee events are required to conform to our [Code of Conduct](https://github.com/NoVACodeCoffee/admin/blob/master/code-of-conduct.md).

Improve your speaking skills in a friendly, relaxed atmosphere where speakers of all languages are welcome. This program is supported by library volunteers and requires a basic working knowledge of English. Registration required. Registration is required. RSVPing on Meetup does not register you for the program. [To register and see more details, visit our events calendar. ](https://pwcgov.libnet.info/events?start=today&end=2023-2-28&term=english)

Looking for a quiet, focused space to write? Come be part of our writing group—a dedicated time just for writing alongside fellow writers in your community. No readings, no critiques, no peer-review—just you writing within a supportive atmosphere. 7pm-7:15pm: Find your seat, set up your writing station, quick intro's. 7:15pm-8:45 pm: An hour and a half of silent focused writing. 8:45pm-9pm: Quick debrief, pack and head home. Can't wait to see you! :)

We are a group of professionals who share business strategies, refer business, and act as a sounding board to our members. Our business group is Clifton/Fairfax-based. We meet on the third Wednesday of the month. We start every meeting with informal networking and then move to the more formal agenda of the day. The agenda includes the topic of the day, discussion of the topic, then business needs and wants, and finish with success stories. We are looking for experienced business professionals and business owners who see value in networking with like-minded professionals and are dedicated to growing their business and helping other group members grow theirs. If this is you, we'd love to connect!

​Join our new group’s second meeting. Meet fellow tech enthusiasts west of the beltway. ​Because our group is new, we have a poll for the direction we want to take this new group. ​[https://submatrix.net/article/Meetups/e9ym4fr8Ca](https://submatrix.net/article/Meetups/e9ym4fr8Ca) ​For this event, we will be running a working meetup. ​Our meetings are a great place to work on and show off what you do. We are always welcoming. ​Our format is great for people who have started on but not finished one or several side projects. ​We will start off with basic introductions and what we are working on and what our goals are. We’ll break the rest of the meeting into two working sessions. In between, we’ll do a quick check-in to see how folks are going. ​Then we will conclude with showcasing and networking. Don't have an account here? We have more than one platform available for RSVP: Meetup: [https://www.meetup.com/loudoun-dev-group/events/313329870/](https://www.meetup.com/loudoun-dev-group/events/313329870/) Luma: **[https://luma.com/dhd9iufz](https://luma.com/dhd9iufz)**

Join us for another session of our study group as we continue our coverage of the book Domain-Specific Small Language Models. In this session, we will Chapter 2 which is titled Tuning for a Specific Domain. This isn't just a lecture! Come ready to ask questions, share insights, and code along. Whether you're a beginner or have some experience, this is the perfect opportunity to continue to learn together. If you plan to work with the code on your own laptop during the session, try and download the code from here https://github.com/virtualramblas/Domain-Specific-Small-Language-Models/ ahead of time. We will be meeting at the University of North America in room 2215 for this event.