Bamboo

Welcome to OpenSearch Tokyo User Group ! OpenSearch Tokyo User Groupの第一回 ミートアップイベントを開催します！ OpenSearch は検索やObservabilityのワークロードのためのOSSです。 本イベントでは、第一回イベントということで、OpenSearchプロジェクトの概要やOSSの今後のロードマップ、OpenSearchのユーザからの体験話などをご紹介します。 扱わないトピック : AWSなどのベンダーサービス固有の話 イベント概要 日時: 2026年2月5日 (木) 18:30 開場 19:00-21:00 セッション 21:00〜懇親会 (22:00完全退館） イベント会場 Amazon Web Service Japan オフィス : 東京都品川区上大崎3-1-1 目黒セントラルスクエア21F (room number 21.001) https://maps.app.goo.gl/c1Zr7ff9kndRe2fGA タイムテーブル 1\. OpenSearch プロジェクト最新情報 2.ユーザーセッション① : 弥生株式会社 Kazuma Imaizumiさん * タイトル : OpenSearch Warm Tier設計の実践 - UltraWarm経験から学ぶIndex/Shard最適化 * 概要 : OpenSearchでのUltraWarm導入経験をもとに、OSS環境でも活用できるWarm Tier設計の実践的ノウハウを共有します。ISM（Index State Management）、Index、Shardの基本概念から、シャードサイズ設計のベストプラクティスと実運用での最適化、UltraWarmとWarm Tierで共通する設計考慮事項まで、具体的な設定例とともに解説します。実運用データ（週1TB、1,000以上のシャード、1シャード約100GB）での経験をもとに、理想と現実のギャップを踏まえた時系列データの効率的な管理とコスト最適化を目指す技術者向けの内容です。 3.ユーザーセッション② : Serverless Operations, Inc. Sonu Kimさん * タイトル : 「うまく言えない」検索を叶える ― OpenSearchと生成AIで作る類似プロジェクト検索 * 概要 : 「前に似たような案件があったはずだけど、どう検索すればいいか分からない」といった、うまく言語化できない検索が必要な業務があります。本セッションでは、OpenSearch を活用して類似プロジェクトを検索できる仕組みを構築し、業務に合わせて「何をどの程度似ていると判断するか」を柔軟にチューニングできる検索体験を実現した取り組みについてお話します。 また、あいまいな検索条件でもユーザーが求める情報に辿り着けるよう、生成AIを用いてデータを前処理・構造化するアプローチや、検索精度を高めるための工夫についても合わせてお伝えします。 4.ユーザーセッション③ : 株式会社ラクス Nobuhiro Inaguma さん * タイトル : VectorDBとしてのOpenSearch\~5,000万件超のベクトル検索をコストを抑えて運用する技術選定\~ * 概要 : 全文検索・分析基盤として知られるOpenSearchは、実は大規模なベクトル検索にも活用できます。本セッションでは、5,000万件超のベクトルを対象に、ベクトルDB導入時に課題になりがちなメモリコストの増加を、Disk-based vector searchの活用で抑えた事例をご紹介します。 懇親会について セッション終了後、簡単な軽食とドリンクをご用意する予定です。 \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- OpenSearch Tokyo User Groupについて OpenSearch Project Tokyo ユーザーグループは、OpenSearch ユーザーを中心としたコミュニティです。オープンソース版の OpenSearch、各種マネージドサービス上で実行されている OpenSearch エンジンをご利用の方は是非ご参加ください。ユースケースは検索に限定されません。分析、可視化など、OpenSearch がカバーするあらゆるトピックについて情報・意見交換していきましょう。 Welcome to the OpenSearch Tokyo User Group! We are hosting the first meetup event of the OpenSearch Tokyo User Group! OpenSearch is an open-source software for search and observability workloads. At this inaugural event, we will be introducing the overview of the OpenSearch project, the roadmap for the open-source software, as well as experiences shared by OpenSearch users. Topics we will not cover: Specific topics related top services provided by vendors like AWS. Event Details Date & Time: Thu,Feb,5 2026 \- 6:30 PM Doors open \- 7:00 PM \- 9:00 PM Sessions \- 9:00 PM \- 10:00 PM Networking \(complete departure by 10 PM\) Venue Amazon Web Services Japan Office: Meguro Central Square, \*-\*-\*, Kamiosaki, Shinagawa-ku, Tokyo 21F (room number 21.001) https://maps.app.goo.gl/c1Zr7ff9kndRe2fGA Agenda TBD Networking After the sessions, we will provide light refreshments and drinks. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- About the OpenSearch Tokyo User Group The OpenSearch Project Tokyo User Group is a community centered around OpenSearch users. If you are using the open-source version of OpenSearch or the OpenSearch engine running on managed services, please join us. The use cases are not limited to just search - we will also discuss topics around analytics, visualization, and any other areas that OpenSearch covers.

Ukulele Club is a fun group for all ages and skill levels! There is no teacher, but we all help teach each other. Think of songs you would like to learn, and we can learn them together. If you don't have an ukulele, we have extra ukuleles When: *almost* Every Saturday, 10am-11:30am Admission: food/drink order

Start the year surrounded by Love From the Earth—with delicious vegan eats, sweet treats, artisan goods, and a chance to win one of our raffle baskets filled with plant-based goodies. Support small businesses, enjoy great food, and spend a cozy day with the community. We will reserve a table for this group if there is enough interest. Just comment "interest" below. Don’t miss out—see you there! Check [event page](https://www.facebook.com/events/893838639773267/) for a vendor list.

**Our February novel is: Julia by Sandra Newman** **This month is a classic, dystopian, fiction, literary fiction, women’s fiction, and science fiction novel. The book is 394 pages in print and 14 hours and 20 minutes on audiobook.** **An imaginative, feminist, and brilliantly relevant-to-today retelling of Orwell’s 1984, from the point of view of Winston Smith’s lover, Julia, by critically acclaimed novelist Sandra Newman.** Julia Worthing is a mechanic, working in the Fiction Department at the Ministry of Truth. It’s 1984, and Britain (now called Airstrip One) has long been absorbed into the larger trans-Atlantic nation of Oceania. Oceania has been at war for as long as anyone can remember, and is ruled by an ultra-totalitarian Party, whose leader is a quasi-mythical figure called Big Brother. In short, everything about this world is as it is in Orwell’s 1984. All her life, Julia has known only Oceania, and, until she meets Winston Smith, she has never imagined anything else. She is an ideal citizen: cheerfully cynical, always ready with a bribe, piously repeating every political slogan while believing in nothing. She routinely breaks the rules, but also collaborates with the regime when necessary. Everyone likes Julia. Then one day she finds herself walking toward Winston Smith in a corridor and impulsively slips him a note, setting in motion the devastating, unforgettable events of the classic story. Julia takes us on a surprising journey through Orwell’s now-iconic dystopia, with twists that reveal unexpected sides not only to Julia, but to other familiar figures in the 1984 universe. This unique perspective lays bare our own world in haunting and provocative ways, just as the original did almost seventy-five years ago.

Our group, KIND MEALS, will be picking up the tab for pizzas, at MIKEY'S LATE NIGHT SLICE, on Sunday, February 8th from 12-2pm. We will be trying out MIKEY'S Vegan Fake-ass BBQ Chick'n pizza and Vegan Fake-ass Pepperoni pizza, as well as some other special vegan pizzas that are served there. All the vegan pizzas are covered with Selfish Cow vegan cheese. The pizza is free, drinks on your own. Join us to learn more about **[KIND MEALS](https://kindmealscolumbus.org)** (a 501c3 nonprofit organization based in Cols. Ohio, providing hunger relief services to those in need). All of the food we serve is fresh and vegan! If you love working with community, being of service, looking to hang with some fun like-minded people, and just love to socialize on a Sunday afternoon, join us for some FREE vegan pizzas at MIKEY'S LATE NIGHT on 4th and Main. Mikey said the more the merrier!

**I’m planning future book club meetups and would love your input. Please choose your top three from the list below—your picks will help decide what we read next!** **Book Options** *The Hong Kong Widow* – Kristen Loesch *American Spy* – Lauren Wilkinson *God of the Woods* – Liz Moore *Listen for the Lie* – Amy Tintera *The Swallows* – Lisa Lutz *The Drowning Kind* – Jennifer McMahon *The Eights* – Joanna Miller *The Quiet Librarian* – Allen Eskens Thanks so much for sharing your pick! Please **reply in the comments** with your top three. I can’t wait to see which books rise to the top and to discuss them together at our next meetups.

Join members of the local UX and Digital Design community for a casual monthly breakfast. There _might_ be a little snow, but there _will_ be effectively infinite serve-yourself coffee, so it evens out if you ask me. Just a reminder, while the other locations are great too, we’re at the Lane Ave one this time.

Join us for our February Book Club gathering where we will come together to discuss *A Master of Djinn* by P. Djèlí Clark in a safe and welcoming environment. Make new friends who share your passion for books and connect with fellow LGBTQ book enthusiasts.