Java Concurrency

באו לתקן כל מה שלא עובד. יותר טוב אם [צרו איתנו](https://docs.telavivmakers.space/welcome) קשר וספרו לנו מה הולכים לתקן ךפני להגיע. Come to fix together It is much better if you [contact us](https://docs.telavivmakers.space/welcome) and tell what do you want to repair before coming.

こんにちは、よろしくお願いします. קבוצת חברים לומדי יפנית חידשה מפגשים, כל הרמות וכל הגילאים מוזמנים להצטרף 一緒に練習しませんか。 נפגשים בקפה לנדוור שרונה ת"א, יום שני 29 ביוני, ב- 18:15. שימו לב! מפה למטה יכולה להיות לא מדויקת, יש לחפש קפה לנדוור שרונה! במפגש הקרוב - בחלק הראשון תרגול יפנית לרמות מתחילים-בינוני (עבור רמה מתקדמת תיפתח פינה שיחה בסגנון חופשי). בחלק השני משחק קאהוט אינטראקטיבי משותף אשמח אם תיידעו אותי מראש מי מתכנן להגיע, יעזור לי מאוד בהכנות. ומותר גם להגיע בלי להודיע :) לאון

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)

בארבעת המפגשים נתרגל תכנות ויישום של מיקרו-בקר ESP32, כולל חיבוריות WiFi ו- Bluetooth, נלמד איך לשלב אותו עם מודלי בינה מלאכותית ונתנסה בפרויקטים אינטגרטיביים המשלבים עיבוד מקומי וענני. למבוגרים/ות ונוער 16+ בעלי ידע ונסיון בסיסי בארדואינו. עלות: 900 ש"ח (ליחיד/ה) תושב חוץ, 850 ש"ח (ליחיד/ה) תושב יהוד שימו לב: לא מספיק להרשם במיטאפ יש להרשם גם בקישור הבא , שם תמצאו גם פרטים נוספים https://link.makelab.org.il/ESP32-AI

This month we meet at XSolla Club for another great evening dedicated to expanding your horizons in game development. Have an idea, suggestion, venue, or talk? Reach out to [team@notable.games](http://mailto:team@notable.games/) or fill [this form](https://forms.gle/Y4wq7KCi9NbJEDDV6). We can help find an idea, prepare a talk, and overcome fear of stage. Everyone has something to share! **Agenda** 18:00...18:30 — Meet and greet 18:30...20:30 — The Main Show 20:30...21:00 — Networking and goodbyes **PLEASE NOTE** Although the meetup description and the slides are is in English, the actual talks are given in Hebrew. **Talks** Homo Ludens: How Play Built (and then enslaved) Human Society - By Alon Karmi Nostalgia, Code and The End of the World - Eternal Afternoon making of - By Alex Klexber **Pitch a Game** Erez: Tiltan Origins by The Banana Project [https://ishkarish.itch.io/erez-tiltan-origins](https://ishkarish.itch.io/erez-tiltan-origins)

Signing up is via [LUMA](https://luma.com/k8aoobxy)[.](https://luma.com/r8xfehz3) https://luma.com/k8aoobxy

***[IMPORTANT NOTICE registration is HERE](https://luma.com/j8czeuvr)*** Join **Aerospike, Start.io, and Contentsquare** for an evening of deep technical talks and peer-level discussion on the real trade-offs behind operating modern real-time systems in production - where tail latency, throughput predictability, scalability, and cost efficiency are constantly in tension. This event will move past theory and into hard-earned production lessons: scaling beyond RAM constraints, migrating high-throughput workloads from Redis to Aerospike, designing architectures driven by real cloud cost models, and uncovering the non-obvious pitfalls of migrating real-time systems from AWS to GCP. Topics range from VPC architecture and traffic steering differences to NVMe and local SSD behavior, and why familiar operational playbooks often fail across clouds. This event is designed for engineers and architects already running latency-sensitive, high-scale systems - where milliseconds matter, growth is relentless, and infrastructure decisions directly impact performance, reliability, and cost. ​ **Agenda** **​17:30 – 18:00 - Welcome drinks & networking** ​**18:00 – 18:10 - Opening Remarks – Speed vs Capacity: Designing Data Systems for Real-Time Scale** *Oshrat Ben-Avi Zabludovitz, Israel Country Manager, Aerospike ​* **18:10 – 18:30 - Scaling Past RAM: Architecture Lessons from Our Redis-to-Aerospike Migration** *Ilan Huchansky, Data Platform Team Leader, Start. io* ​As Start.io scaled, our legacy Redis-based architecture for the user-profiles database reached significant operational limits, particularly during high-traffic periods, node failures, and scaling events. To maintain our strict performance SLAs while reducing operational overhead, we embarked on a search for a more robust, cost-effective NoSQL solution. In this session, we will share the architectural lessons learned while evaluating the database landscape - including our comparisons with alternatives - and our ultimate migration to Aerospike’s Hybrid Memory Architecture. We’ll discuss how we moved past RAM constraints to achieve sub-millisecond performance at massive scale without compromising on availability or data consistency. ​ **18:30 – 18:50 - Boosting Cost Efficiency with Cost-Aware Architecture** *Doron Hoffman, Chief Architect, Contentsquare* ​ In this session, we explore the critical role of cost-aware architecture in achieving optimal cost efficiency for modern software systems. As organizations increasingly rely on cloud services, microservices, and distributed computing, understanding and managing costs becomes paramount. ​We’ll discuss the shift from traditional architecture to cost-aware design and examine how architectural decisions directly impact operational expenses. Through a real-world example, we’ll share lessons learned from evaluating multiple cloud providers and their services using cost models and how rearchitecting with cost as a first-class concern made a measurable difference. ​Attendees will gain practical insights into designing cost-efficient systems that balance performance, scalability, and financial constraints, enabling more sustainable growth. ​ **18:50 – 19:10 - The Latency Leap: Hard Lessons in Migrating Real-Time Systems from AWS to GCP** *David Gerchikov, Senior Software Engineer, Aerospike* ​ Moving a stable web application between clouds is challenging; migrating a high-throughput, real-time system is far more delicate. When heartbeats are measured in milliseconds, the “invisible” differences between AWS and GCP—from VPC architecture to NVMe and local SSD behavior—can determine whether a migration succeeds or fails. ​This session goes beyond basic service mapping to explore the real friction points of moving a real-time engine from AWS’s regional model to Google Cloud’s global fabric. We’ll cover networking and traffic-steering gotchas, why AWS operational playbooks often don’t translate, and how storage lifecycle constraints in GCP Local SSDs force changes in node management to preserve predictable performance and reliability. ​ **19:10 – 20:30 - Networking and fun** ***[IMPORTANT NOTICE registration is HERE](https://luma.com/j8czeuvr)***

July 1, 2026 18:30 Beit Europa, Sderot Sha'ul HaMelech 37, Tel Aviv We look forward to seeing you there!

Join us for a professional meetup where we dive deep into the world of open source, explore how to navigate complex codebases, and examine the future of software development in the age of AI. The event will be hosted at the Academic College of Tel Aviv-Yaffo and will conclude with the annual members' assembly of "HaMakor" – the Israeli association for the promotion of open source. Come to learn, contribute, and connect with the community. **Agenda** **17:30 \| Gathering and Mingling** **18:00 \| How to Navigate an Existing Codebase / Igor Khanin\, Backend Engineer at Fireblocks** In our studies, we are used to writing everything from scratch, but in the real world and in open-source projects, the true challenge is understanding complex, existing codebases. In this talk, Igor will share practical techniques for code exploration and explain why this skill is even more critical in the era of LLMs. **18:30 \| 3 Scenarios for the Future of Software Development / Eran Shlomo\, Cofounder & CEO at flowpad** How are AI tools fundamentally transforming the software engineering profession? In this talk, we will analyze three potential scenarios for the near future of software development—from changes in how we write code and the automation of testing and integrations, to the evolving role of developers on the team. **19:15 \| HaMakor Association Members' Assembly** An opportunity to get to know the association's activities up close, influence its goals, and become part of the central voice for open source in Israel.

July 1, 2026 18:30 Beit Europa, Sderot Sha'ul HaMelech 37, Tel Aviv We look forward to seeing you there!

ערב אחד, אווירה ביתית, שיחה פתוחה. דני בית-אור מגיע לביקור קצר מקליפורניה ומארח מפגש אינטימי על השקעה מרחוק בנדל״ן האמריקאי — היכן משקיעים היום, איך נכנסים נכון, ומה באמת חשוב לדעת לפני שמתחילים. ***הרשמה: https://simplydoit.net/etn/june2026*** אני חי בקליפורניה ופועל למעלה מ-20 שנה כמשקיע נדל״ן, ולאורך הדרך סייעתי למאות משקיעים לרכוש אלפי נכסים בלמעלה מ-40 ערי מטרו שונות בארה״ב. זהו מפגש ביתי בסגנון שיחה פתוחה — באווירה אינטימית ומספר מקומות מוגבל. לא הרצאה ולא מצגת, אלא שיחה כנה סביב כל מה שמטריד אתכם לפני הצעד הראשון, וגם אחריו. בואו עם השאלות שלכם. **על מה נדבר** * היכן כדאי להשקיע — אילו שווקים מעניינים היום * איזה סוג נכסים — בית פרטי, דופלקס או מולטי-פאמילי * איך משקיעים מרחוק, מבלי לעלות על מטוס * התנהלות עם חברות ניהול נכסים * זיהוי חששות וחסמים — ואיך מתגברים עליהם * ריביות ומשכנתאות, ומה זמין למשקיע זר * היכן יש הזדמנויות מעניינות במצב השוק הנוכחי * רכישה והחזקת נכסים מישראל * שאלות, תשובות, וחוויות אישיות — ועוד ***הרשמה: https://simplydoit.net/etn/june2026*** **מתי ואיפה** יום שלישי, 16 ביוני, בשעה 20:00. ראש העין אירוח ביתי, קפה וכיבוד קל. הכתובת המדויקת תימסר בנפרד לנרשמים. ההשתתפות ללא עלות, בכפוף להרשמה מראש ולמספר מקומות מוגבל. **קצת עליי — דני בית-אור** עברתי לארה״ב ב-2004, אחרי שהתחלתי להשקיע בנדל״ן אמריקאי עוד כהייטקיסט צעיר בתל אביב. מאז אני ממשיך להשקיע באופן אישי ומסייע למאות רבות של משקיעים לרכוש אלפי נכסים בלמעלה מ-40 ערי מטרו שונות. ב-2008 צלחתי את משבר הנדל״ן הגדול, ואת הלקחים שלמדתי אני מיישם עד היום עם הלקוחות שלי — לא רק כדי להתחיל בהשקעות נדל״ן, אלא כדי להמשיך ולבנות פורטפוליו פיננסי שלם. ***הרשמה: https://simplydoit.net/etn/june2026*** **חשוב לדעת** מספר המקומות מוגבל. ברגע שנגיע למקסימום ההרשמות תיפתח רשימת המתנה, שתתמלא במקרה של ביטולים. אם לא הצלחתם להירשם — שלחו הודעה ל-meet@simplydoit.net או בוואטסאפ. מי שלא יוכל להגיע אבל מעוניין להיפגש, אהיה זמין סביב תאריך ההרצאה לפגישות אישיות. לתיאום ויצירת קשר: WhatsApp / טקסט / שיחה — ‎+1 650-440-5544‎ · dani@simplydoit.net ***הרשמה: https://simplydoit.net/etn/june2026***

# 🔐 Alumni Meetup: Breaking into Cybersecurity & Developer Support ### From Developers Institute Graduate to Technical Support Engineer at Snyk Join us for an exclusive alumni event with **Jeremy Gross**, Developers Institute Full-Stack Bootcamp graduate and current **Technical Support Engineer at Snyk**, one of the world's leading developer security platforms. After transitioning careers and moving to Israel, Jeremy went from bootcamp student to working daily with enterprise customers, CI/CD pipelines, application security, AI security, and modern DevSecOps practices. *** ## What You'll Learn ### 🚀 From Bootcamp to First Tech Job * How Jeremy landed his first role after graduation * Challenges he faced entering the Israeli tech market * Building experience when you're starting from zero ### 🔐 Inside a Cybersecurity Career * What a Technical Support Engineer actually does * Working with enterprise customers * Troubleshooting complex technical issues * Understanding SAST, DAST, SCA, SBOM, MCP, and AI Security ### 🤖 AI & Cybersecurity * How AI is changing software development * Security challenges created by AI-generated code * Why cybersecurity is becoming one of the hottest fields in tech ### 💼 Career Advice * Networking that actually works * Interview preparation * Skills employers look for today * How to stand out as a junior developer *** ## Agenda **17:00 – 17:00** Networking & refreshments **17:30 – 18:15** Jeremy's Journey: From Developers Institute to Snyk **18:15 – 18:30** Ask Me Anything Networking *** ## Meetup Description What does it really take to launch a successful tech career in 2026? Join Developers Institute alumnus Jeremy Gross as he shares his journey from bootcamp graduate to Technical Support Engineer at Snyk. Learn how he navigated the job market, built his network, landed his first opportunities, and ultimately broke into the cybersecurity industry. Whether you're currently studying, actively job hunting, or already working in tech, this session will provide practical insights, real-world lessons, and valuable networking opportunities. 📅 **When:** June 30th, 2026 at 5:00pm 📍 **Where:** Developers.Institute Campus, Bezalel 8, Ramat Gan **ONLY ONSITE** 🎟 **Free for Developers Institute students, alumni, and members of the Israeli tech community.** ✅ Reserve your spot now → [https://developersinstitute.typeform.com/open-day](https://developersinstitute.typeform.com/open-day)

How Claude-powered systems actually get hacked. We'll go straight into the attacks people are running right now: prompt injection, jailbreaks, agent and tool exploits, and what red-teaming the Claude ecosystem really looks like. 🍕 **18:00 – 18:30** · **Gathering, Pizza & Drinks** 📣 **18:30 – 18:45** · **Welcome + Latest Claude Updates** · Organizers 💻 **18:45 – 19:15** · **JavaScript Is All You Need: Exploiting Agentic Workflows for API Key Theft** · Eden Katz, GenAI Security Tech Lead @ Alice. Building with AI APIs? This one matters. Alice's research shows that API key creation on platforms like Anthropic relies on cookie-based auth alone — so a malicious browser extension or a compromised agent skill can silently mint a new key and ship it elsewhere. No MFA, no warning, no expiration. As agents get trusted with autonomous code execution and client-side access, the line between safe tool use and serious vulnerability collapses. JavaScript really is all you need. 👾 **19:15 – 19:45** · **Securing coding agents: Unpacking Threats and Defences** · Bar Kaduri, Principal researcher @ Capsule Security *AI coding agents like Claude Code, Copilot, and Cursor now write, execute, and ship code with unprecedented autonomy, often straight to production. But this privileged access opens a unique attack surface, as recent incidents like prompt poisoning and deleted databases reveal. This session breaks down the real-world threats facing coding agents and delivers practical, actionable defences for securing your AI-assisted development pipeline.* 🍻 **19:45 – 20:00** · Drinks & Geek Out

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

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

**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

**Kindness Conference 2026** Registration required. Visit [www.kindhelp.org](http://www.kindhelp.org) to register! Imagine a future intentionally shaped by kindness: let's build it together with on **Saturday, July 18th at the Junto Hotel in downtown Columbus!** The function of our conference is to help people develop the skills to build kind community and provide opportunities to increase in-person connection and support in each other’s lives. **This conference is for any of us who are:** · Feeling isolated and lacking community in our current society · Wanting to make a difference in our own lives and the lives of each other · Anyone who is just wishing to create something better! **We will build more kind community by:** · Developing formats for building community-based infrastructure where existing systems are failing that anybody can use · Providing the tools that help people connect in-person and practicing using those tools together · Implementing Universal Design so that no one gets left behind **Opportunities and practical tools we are offering:** · Lunch! · Community-Building Toolkits for people to take home · A chance to build lasting friendships and supportive connections · Opportunities to share referrals, strategies, resources, and the kind of connected support networks many people receive through family, but that those without community and family are often lacking · Ongoing community dinners, free workshops, and other events where people can connect **Participants also have the opportunity to receive CE credits from the Ohio CSWMFT Board.** We are just getting started! This is one of many upcoming events where we can continue making kind community together. **Who else should be here?** Share this opportunity with anyone else who you think might want to build kind community! For more information and to register visit [www.kindhelp.org](http://www.kindhelp.org/). If you would like to help us plan the day, we would love to connect email us at [info@kindhelp.org](mailto:info@kindhelp.org)!

**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

Feeling down? Sometimes depressed? Can't focus? Negativity & stress? Recent losses? Creativity in career and personal life hindered by mental blocks? Sometimes we never fully recover from traumatic experiences. Whether it was yesterday, last week or a year ago, traumatic experiences - a loss of a loved one, losing a job, a breakup - can leave you scarred. You talk about it and feel a little better, but it never goes away. After you hang up the phone, it's still there; the sadness, the cloud, the over-thinking, the worry, the guilt. You try to focus, but you're blocked. You try to look forward into new experiences, new relationships but a cloud is hanging over you, casting a shadow on what you once considered a bright, cheerful future. What happened to your courage? Your strength of character? You're 'why not' attitude? Whoever said 'time heals' must have had a special time machine, because after weeks, months, years, you're wondering - when exactly does that kick in? Sometimes it seems like drinking or drugs are the way to go. But they wear off, and now the problem is still there with added side effects from the drugs. At this free local Meetup event we will talk about: * What causes grief, anxiety and depression to become chronic. * Is it possible to regain your joy and happiness even after traumatic experiences? * How to break away from negativity and focus on the future * What are the steps to take to get control of your mind and your emotions? Learn about a safe, gentle, do-it-yourself counseling that can be done in the comfort of your own home. Let's explore safe, effective solutions for healing from traumatic experiences. Be sure to click on the red "Attend" button below to come to the event. We look forward to seeing you there. This group is sponsored by the Dianetics & Scientology Life Improvement Center.

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd