Book Swap

As real-time systems become the backbone of modern products, the way we design and operate data infrastructure is evolving fast. In this meetup, we’re bringing together experts from Riskified, Confluent, and Wix to show how Apache Flink and Apache Kafka power the next generation of streaming architectures—from resilient, fault-tolerant pipelines and reusable data products to AI-driven decisioning at massive scale. Whether you’re a data engineer, platform builder, or AI-curious developer, this evening will give you practical patterns and fresh ways to think about real-time systems. **Agenda:** 18:00 - 18:30 - Mingling, drinks, and snacks 18:30 - 19:00 - Supercharge Your FlinkSQL Job: Use a Hybrid API Approach to Achieve Perfection - Gal Krispel, Senior Data Platform Engineer at Riskified 19:00 - 19:30 - From Data Mess to Data Products: Unlocking Real‑Time Value with Data Streaming - Ohad Israeli, Senior Solutions Engineer Team Leader at Confluent 19:30 - 20:15 - AI vs. Karen: Building Real-Time Sentiment Analysis Pipelines at Scale - Josef Goldstein, Head of R&D, Big Data Platform at Wix.com 20:15 - More drinks and mingling The talks will be delivered in Hebrew. \-\-\-\-\-\-\-\-\-\-\-\- **// Supercharge Your FlinkSQL Job: Use a Hybrid API Approach to Achieve Perfection - Gal Krispel, Senior Data Platform Engineer at Riskified** Apache Flink’s SQL interface almost sounds like a dream: write standard SQL - get a full-blown streaming app. However, dreams and reality rarely align, and FlinkSQL achieved a questionable level of production readiness. In this session, we’ll explore the known upsides and downsides of FlinkSQL. From the enormous velocity and traction FlinkSQL can create in your organization, to sleepless nights of manual state interventions and unexpected data type inference. The good news is, there are ways to bypass obstacles and tap the most out of FlinkSQL’s benefits by using a Hybrid Flink API approach. We’ll examine the architecture of a fault-tolerant FlinkSQL job (using DLQ), bypass inherent FlinkSQL’s data-type limitations, and finally, show how we can set up our job to handle a massive load. Finally, we’ll also share step-by-step code examples of how to achieve it. ***About the speaker:*** Gal Krispel is a Data Platform Engineer at Riskified, specializing in streaming technologies such as Apache Kafka and Apache Flink. He focuses on building scalable, real-time data pipelines that power Riskified’s core products. Gal is particularly interested in making complex data architectures accessible and efficient across the organization. His work spans real-time analytics, event-driven design, and the seamless integration of stream processing into large-scale production systems. [LinkedIn](https://www.linkedin.com/in/gal-krispel/) **// From Data Mess to Data Products: Unlocking Real‑Time Value with Data Streaming - Ohad Israeli, Senior Solutions Engineer Team Leader at Confluent** This talk shows how organizations can move from brittle, point‑to‑point integrations to a data streaming “central nervous system” that powers reusable, trustworthy data products across both operational and analytical estates. We’ll cover the Stream–Connect–Govern–Process blueprint, pragmatic pipeline patterns into warehouses like Snowflake, and real‑world use cases from fraud detection to personalization—highlighting how reusable data products slash time‑to‑value and operating cost while improving data quality and freshness. Attendees will leave with a practical framework to standardize schemas, materialize real‑time pipelines, and reuse domain data products to accelerate AI/ML and analytics initiatives. ***About the speaker:*** Ohad Israeli is a Senior Solutions Engineer Team Leader at Confluent with 20+ years of experience in data architectures. He helps high‑growth tech teams turn streaming data into measurable outcomes using Confluent. His focus is real‑time, event‑driven architectures, faster paths to production, and reliability at scale. [LinkedIn](https://www.linkedin.com/in/israeliohad/) **// AI vs. Karen: Building Real-Time Sentiment Analysis Pipelines at Scale - Josef Goldstein, Head of R&D, Big Data Platform at Wix** We’ve all heard that “the customer is always right". But let’s be honest, some customers are just impossible to please. What if we could detect them before they turn into ALL-CAPS review bombers, in real-time? In this talk, we’ll walk through how to build AI-powered streaming pipelines using Apache Kafka and Apache Flink that can detect frustrated users and respond in real time at massive scale. We’ll explore how to embed AI models directly into data streams for live inference, discuss the trade-offs between using Large Language Models (LLMs) and Small Language Models (SLMs), and tackle the real-world challenges of latency, scale, and cost optimization in streaming AI architectures. Finally, we’ll demo a live end-to-end example, from data ingestion to AI scoring and visualization, that you can later run on your own setup. ***About the speaker:*** The data and culture guy. Currently leading the Big Data Platform R&D at Wix. Yossi has over 15 years of experience building data intensive SaaS applications and growing the awesome teams that make them. He believes that the secret sauce for creating sustainable complex systems is good design practices, effective communication between people, and automating everything. In his day to day he works tirelessly on building the culture necessary to support these values and propagate them to others, one pep-talk at a time. [LinkedIn](https://www.linkedin.com/in/josefgoldstein/)

**TAMI Voice (maintenance hour)** Good time to come and help with cleaning and sorting TAMI stuff for an hour as well as share your thoughts and ideas how to make TAMI a better place! Right after, we have HackaTAMI evening (from 20:00). ========== TAMI wiki: [https://telavivmakers.org](https://telavivmakers.org) TAMI main Telegram channel: [https://t.me/+0t5M0-jK9iIwZmM8](https://t.me/+0t5M0-jK9iIwZmM8)

**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)

## Details Hi everyone, ⚠️ You need to join the Whatssapp community and get a confirmation on WhatssApp that there are still spots available in order to be able to attend. You can join the chess community here by filling the form: https://chessbarisrael.com/#join-us The next edition tournament will take place on **Tuesday.** 📍 **Where:** Masaryk Wine & Flowers, **80 King George St, Tel Aviv** 📅 **When:** 6:15 PM - 8:30 PM ♟️ **Format:** 5 rounds of 8+2 (Rapid) OR Meet & Play (depends on which Tuesday) 🥇 **Prizes:** * **Top Winners:** bottles of wine * **Best Under 1500/800:** 1 hour of private chess lesson * **Sandwich for a randomly picked player** ✨ **How does it work?** This is a friendly, unofficial event (not reported to FIDE) and part of a **bi-weekly series of tournaments** held in bars around Tel Aviv. ⚠️ There is an entrance fee for the event including the first free drink and prizes! **Spots are limited!** ⚠️ You need to join the Whatssapp community and get a confirmation on WhatssApp that there are still spots available in order to be able to attend. Olivier 🎉

מוזמנים/ות לסדנת נגרות - אדנית חלון עם חריטת לייזר. במהלך הסדנה נתנסה במיומנויות נגרות בסיסיות: ניסור, שיוף, קדיחה והברגה ונתנסה בעבודה עם עץ, כל הדרך מחומר הגלם ועד אדנית יפייפיה מעשה ידינו, אותה תוכלו לעטר בחריטת לייזר. למבוגרים/ות (16+). מחיר: ₪200 מחיר לתושבי יהוד: ₪150 שימו לב: לא מספיק להרשם במיטאפ יש להרשם גם בקישור הבא , שם תמצאו גם פרטים נוספים https://link.makelab.org.il/Carpentry-window-planter

Книжный клуб по произведению братьев Чехова "Палата номер 6". Мы обсудим произведение, обменяемся мнениями и попробуем глубже понять и почувствовать о чем написал автор. Я придерживаюсь позиции, что нет неравильных и правильных мнений на литературу :)

Join us in the search for the true, the good and the beautiful. We will be reading and discussing a fascinating philosophical text in English. Welcome anyone interested in understanding life more deeply, regardless of age or prior knowledge. The love of wisdom is enough. Please join our WhatsApp group: https://chat.whatsapp.com/CDjIJ8i1LZsJ2a7WJXFxhG?mode=wwt Sapere Aude! (Kant's Motto: Dare to Think!)

Join us in the search for the true, the good and the beautiful. Each meet is in one of two formats: a shared reading and open discussion of philosophical texts, or a continuing series of lectures based on the reading of a fascinating book of philosophy. Both formats are in Hebrew, with some reading of English texts, assisted whenever needed. We meet weekly Friday on 80 Rokach Boulevard, Tel Aviv, at the gardens of the Council for a Beautiful Israel. Welcome anyone interested in understanding life more deeply, regardless of age or prior knowledge. The love of wisdom is enough. Please join our WhatsApp group: https://chat.whatsapp.com/JeAa2uRNTlF0rdrVTLzUC0?mode=wwt Note: there's always enough sitting room, but some of it is on the grass or a mat on the floor. If you want to guarantee yourself a chair, please bring one with you. Sapere Aude! (Kant's Motto: Dare to Think!)

**IT’S FLUENT’S 9th BIRTHDAYYYYY!** **When?** Saturday December 27th \| 20:30\-23:00 **Where?** Abraham Hostel Tel-Aviv **What to expect ?** *20:30-22:30:* Our traditional Language Exchange Event combined with fun games, festivities, and celebrations ! *22:30-23:00:* An exciting Language Trivia competition with the entire community (get the chance to win free entrances to our events!) + Yearly prizes and awards 🎁 Sign up here: [https://www.fluent.community/events/language-exchange-fluent-9th-birthday/](https://www.fluent.community/events/language-exchange-fluent-9th-birthday/) 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 Discounted Prices (Available until 3pm on the day of the event!)🎟️ Ticket + soft drink = 60 NIS Ticket + beer/glass of wine = 70 NIS Prices for Walk-ins on the day of the Event 🎟️ Ticket + soft drink = 65 NIS Ticket + beer/glass of wine = 75 NIS 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 Did you know that you can also enter the event **for free** and be an Ambassador? 😃 Ambassadors help others practice their native language for half of the evening, and get to practice other languages during the second half of the evening. See you there!!

## Details 18:00 - Mingling 🎉, SWAG 🎁, pizza 🍕, and beers 🍻 18:30 - 19:45 Lecturers 19:45 - IntelliJ Licenses + Node.TLV 20025 ticket 🎉 (more details in [https://www.nodetlv.com/)](https://www.nodetlv.com/)) ## Full Agenda From: Tal Doron : [Hebrew] **Querying for Evil: Using BigQuery to Find Threats in the SMB realm** This session dives into our practical approach for transforming massive volumes of cloud productivity logs into actionable security intelligence. We'll demonstrate how we leverage Google BigQuery as a highly-scalable data warehouse to store, process, and analyze this data at speed. You'll see how we execute complex, high-performance queries that uncover subtle anomalies, hunt for advanced threats, and provide critical detections to secure our customers. From [Anatol Zakrividoroga](https://www.linkedin.com/in/anatol-zak/overlay/about-this-profile/): [English] **Full-Stack Type Safety Without the Boilerplate: Meet tRPC** Keeping your frontend and backend in sync is hard — especially when API contracts drift, types get out of date, and your IDE stops being helpful. tRPC solves that by letting your backend define procedures that your frontend can call directly, with full TypeScript inference from end to end. In this talk, we’ll explore how tRPC eliminates unnecessary schemas and code generation while still delivering robust, type-safe communication between client and server. You’ll see how to set up a fully type-safe full-stack workflow, catch breaking changes before they hit production, and dramatically reduce the overhead of maintaining APIs. From: [‫Sagi Carmel](https://www.linkedin.com/in/sagicarmel/overlay/about-this-profile/): [Hebrew] **Promise you will learn something new about promises** Most of the time we are using Promises without reeeally understanding it's practical use v.s. what it was before. We will learn in a very interactive lesson the pure basic. Register via Luma -> [https://luma.com/b5bga495](https://luma.com/b5bga495) 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.**

**TAMI Sonic (Music Night)** Join our bi-weekly informal meetups devoted to playing and experimenting with sound. ========== TAMI wiki: [https://telavivmakers.org](https://telavivmakers.org) TAMI main Telegram channel: [https://t.me/+0t5M0-jK9iIwZmM8](https://t.me/+0t5M0-jK9iIwZmM8)

Join the Maakaf open-source community for an exciting evening of deep dives into open-source contributions, distributed storage, and career growth, hosted at the Red Hat offices! **📍 Location:** Red Hat Offices 8 HaPnina Street, Ra'anana, IL ***Free parking starts at 18:00.*** **🗓️ Date & Time:** Wednesday, December 24, 2025 18:00 - 20:45 (Israel Time) \-\-\- **📝 Agenda** 18:00 - 18:30 - **Gathering & Networking** \| Grab a snack\, meet your fellow community members\, and mingle\! \| 18:30 - 19:00 - Talk 1: **The Death of Traditional Maintainers? AI Is Rewriting Open Source** \| Speaker: **Yuval Kashtan**, Ecosystem Engineering. \- AI doesn’t sleep\, but it does open pull requests—lots of them\. This talk breaks down how maintainers can keep their projects sane in a world where bots may be your most active contributors\. Expect practical advice\, real examples\, and a few laughs about the chaos AI brings to open source\. 19:10 - 19:40 - Talk 2: **Ceph and Google Summer of Code \(GSoC\): Open Source Contribution Opportunities \|** Speaker: **Yuval Lifshitz,** Senior Technical Staff Member at IBM. \- Are you looking for the perfect way to integrate significant open\-source projects with career development? This talk will focus on the leading open-source distributed storage system, **Ceph**, a Red Hat's project! As a developer involved with Ceph, I will share the advantages and disadvantages of contributing to this complex project, whether independently or as part of the Google Summer of Code (GSoC) program. GSoC allows students and developers to participate in meaningful open-source projects, receive mentorship from experienced developers, and even get paid for their work! 19:50 - 20:20 - Talk 3: **Technical Career Insights** \| Speaker: **Omer, Recruiter at Red Hat**. \- Omer\, a recruiter from Red Hat\, will share valuable insights and tips on navigating the tech career landscape\, specializing in what open\-source companies look for in candidates\. 20:20 \- 20:45 \-Mingling & Wrap\-Up \| A final chance to chat with the speakers and community before heading home\. \|

Welcome, readers! ❄️ Our December read is **_A Quiet Life by Ethan Joella._** A Quiet Life by Ethan Joella is a tender, character-driven novel that follows three people in a small Pennsylvania town as they each cope with loss and seek connection. Chuck, a widower, struggles to find meaning after his wife’s death; Ella, a young woman, faces the heartbreak of her missing daughter; and Kirsten, a veterinary technician, grieves her father while contemplating her future. Their stories intertwine gently, revealing how grief and hope coexist—and how even small acts of kindness can help people rediscover purpose and peace in the aftermath of tragedy. Looking forward to discussing with everyone! At this meeting, our third annual White Elephant book exchange will take place! If you'd like to participate, bring a gift-wrapped book that you already own. On the gift wrap, write the genre of the book. We will meet at Zaftig Brewing Co in their event room in the back. We are welcome to bring in our own food, but **drinks must be purchased at the bar.** Happy reading! 📖

I don't usually pick romance but I really wanted to do a Hanukkah book. It's a bit on the longer side but hopefully a quick read. The library only has 5 audiobooks so please try to remember to "release it" when you're done. Columbus libraries: [https://cml.bibliocommons.com/v2/record/S105C3503238](https://cml.bibliocommons.com/v2/record/S105C3503238) Location: The Goat Riversouth [219 South High Street, Columbus, Ohio 43215](https://www.google.com/maps?q=219%20South%20High%20Street%2C%20Columbus%2C%20Ohio%2043215%2C%20United%20States) [Menu](https://static1.squarespace.com/static/686d3ed16745133042482c5f/t/68ff654dbb03b96875430bde/1761568077220/all_brunch-20250311.pdf) Book summary: Rachel Rubenstein-Goldblatt is a nice Jewish girl with a shameful secret: she loves Christmas. For a decade she’s hidden her career as a Christmas romance novelist from her family. Her talent has made her a bestseller even as her chronic illness has always kept the kind of love she writes about out of reach. But when her diversity-conscious publisher insists she write a Hanukkah romance, her well of inspiration suddenly runs dry. Hanukkah’s not magical. It’s not merry. It’s not *Christmas*. Desperate not to lose her contract, Rachel’s determined to find her muse at the Matzah Ball, a Jewish music celebration on the last night of Hanukkah, even if it means working with her summer camp archenemy—Jacob Greenberg. Though Rachel and Jacob haven’t seen each other since they were kids, their grudge still glows brighter than a menorah. But as they spend more time together, Rachel finds herself drawn to Hanukkah—and Jacob—in a way she never expected. Maybe this holiday of lights will be the spark she needed to set her heart ablaze.

We will be having an open discussion of the book "the Soul of an Octopus" by Sy Montgomery. [this is the amazon link for this book](https://a.co/d/1bRn8h4)

Join us for our January Book Club gathering where we will come together to discuss *Can't Spell Treason Without Tea* by Rebecca Thorne in a safe and welcoming environment. Make new friends who share your passion for books and connect with fellow LGBTQ book enthusiasts.

We’ll be reading Brigands and Breadknives by Travis Baldtree this month! We recommend readingading “Bookshops and Bonedust” and “Legends and Lattes” before reading Brigands and Breadknives.

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. If the weather cooperates we will be meeting in the patio. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who want to discuss international travel and culture, and anyone who enjoys getting together for good conversations."