Butterflies

We’re excited to bring the community together for an evening of learning and connection. This time, we'll have a community member sharing a use case and, as usual, an Elastic employee sharing their expertise as well. Come support your fellow developers, learn something new, and meet others who are passionate about search, observability, and security. **Date and Time:** Tuesday, February, 10th from 5:30-7:30 pm EDT **Location:** Elastic Arlington Office - 4100 Fairfax Drive, Ste 500, Arlington, VA 22203 **Agenda:** * 5:30 pm: Doors open; say hi, grab a seat, and eat some food. * 6:00 pm: "Streaming Context: Powering Semantic Search with Kafka and Elasticsearch", by Sandon Jacobs, Developer Advocate at Confluent * 6:30 pm: Q&A * 6:40 pm: "Agent Builder: Providing Relevant Context for Data Driven Agents", by Joe Gentsch, Senior Solutions Architect at Elastic * 7:10 pm: Q&A * 7:20-7:30 pm: Networking & refreshments **Talk Abstracts:** **"Streaming Context: Powering Semantic Search with Kafka and Elasticsearch"** As the de facto platform for event streaming, we’ve seen how data from Apache Kafka can easily empower basic keyword search. But let's be real, modern semantic search applications need *context* to interpret the real meaning and intent of a user's query. We could wait around for the next batch job to kick off and provide that context... *or* we could serve it up in near real-time right from our data streams. In this talk, we'll discuss how to leverage data streams from Kafka to power much smarter semantic search with Elasticsearch. We’ll follow a simple event from a Kafka topic and see how it transforms into a powerful vector embedding. Then, we’ll see this whole flow in action using a k-Nearest Neighbor search to instantly find similar items in milliseconds. While my code examples will be in Java or Kotlin using the Spring Boot and Spring AI ecosystem, FEAR NOT! The core concepts—getting data into a vector format via a stream—are totally language agnostic. Join us to grab a few practical ideas you can take and use in your next project! **"Agent Builder: Providing Relevant Context for Data Driven Agents"** What are agents? What is context engineering? Join us as we dive into the importance of context engineering for providing relevant information to agents, and how to build grounded agents using Elastic Agent Builder. **Parking:** * The building’s parking garage is operated by Colonial Parking and is located off N. Randolph Street * Book a spot on[ SpotHero](https://spothero.com/search?kind=address&latitude=38.8818514&longitude=-77.1095268&search_string=4100+Fairfax+Dr+%23500%2C+Arlington%2C+VA+22203%2C+USA) * A Metro Station is located across the street

DC iOS returns to the Capital One campus for our first meetup of 2026! Come and meet with fellow Apple developers in the DC Area, enjoy some food, networking, and a great tech talk! PLEASE INDICATE IF YOU WILL BE ATTENDING IN PERSON OR OVER ZOOM. **Agenda:** • 5:40 PM - Doors Open (in-person attendees). **Don't forget your ID!** • 6:10 PM - Welcome (in-person and Zoom attendees) • 6:15 PM - **Talk: *SwiftUI Internals + Performance*** • 7:05 PM - Community Announcements & Networking • 8:00 PM - Doors close **Talk Description:** **SwiftUI Internals + Performance** Will Downey A fast-paced breakdown of how SwiftUI works. Aimed at helping build a conceptual understanding of SwiftUI whether you're experienced with the SwiftUI or still hanging on to UIKit. Bonus section on optimizing SwiftUI performance and profiling if time permits. Zoom Link: [https://us06web.zoom.us/j/89091509354?pwd=7y7ghL5i9iSA9rgbpQCdrBiWy5QX7c.1](https://us06web.zoom.us/j/89091509354?pwd=7y7ghL5i9iSA9rgbpQCdrBiWy5QX7c.1) **Location:** Capital One, C2 Building 1680 Capital One Drive, Mclean VA, 22102 100A Visitor parking is either in the garage attached to 1680 Capital One Drive, or the open lot next to 1600 Capital One Drive. After that you will walk over to the main entrance of 1680 Capital One drive, and then walk around the right to the corner to room 100A For the metro, take the Silver Line to the McLean metro stop, then walk into main campus (about a 5 minute walk). From there, walk to the main entrance of 1680 and then go to room 100A **What you need to bring:** ID **When to arrive:** Doors open at 5:50pm ET Event will start at 6:10 pm ET **Will food and drinks be provided?** Yep! **Will there be rapid testing provided?** No **Will masks be required?** No

IMPORTANT PLEASE RSVP @ https://www.meetup.com/washington-dc-elastic-fantastics/events/312487028/?eventOrigin=group_upcoming_events \*\*\* **Date and Time:** Tuesday, February, 10th from 5:30-7:30 pm EDT **Location:** Elastic Arlington Office - 4100 Fairfax Drive, Ste 500, Arlington, VA 22203 **Agenda:** * 5:30 pm: Doors open; say hi, grab a seat, and eat some food. * 6:00 pm: "Streaming Context: Powering Semantic Search with Kafka and Elasticsearch", by Sandon Jacobs, Developer Advocate at Confluent * 6:30 pm: Q&A * 6:40 pm: "Agent Builder: Providing Relevant Context for Data Driven Agents", by Joe Gentsch, Senior Solutions Architect at Elastic * 7:10 pm: Q&A * 7:20-7:30 pm: Networking & refreshments **Talk Abstracts:** **"Streaming Context: Powering Semantic Search with Kafka and Elasticsearch"** As the de facto platform for event streaming, we’ve seen how data from Apache Kafka can easily empower basic keyword search. But let's be real, modern semantic search applications need *context* to interpret the real meaning and intent of a user's query. We could wait around for the next batch job to kick off and provide that context... *or* we could serve it up in near real-time right from our data streams. In this talk, we'll discuss how to leverage data streams from Kafka to power much smarter semantic search with Elasticsearch. We’ll follow a simple event from a Kafka topic and see how it transforms into a powerful vector embedding. Then, we’ll see this whole flow in action using a k-Nearest Neighbor search to instantly find similar items in milliseconds. While my code examples will be in Java or Kotlin using the Spring Boot and Spring AI ecosystem, FEAR NOT! The core concepts—getting data into a vector format via a stream—are totally language agnostic. Join us to grab a few practical ideas you can take and use in your next project! **"Agent Builder: Providing Relevant Context for Data Driven Agents"** What are agents? What is context engineering? Join us as we dive into the importance of context engineering for providing relevant information to agents, and how to build grounded agents using Elastic Agent Builder. **Parking:** * The building’s parking garage is operated by Colonial Parking and is located off N. Randolph Street * Book a spot on[ SpotHero](https://spothero.com/search?kind=address&latitude=38.8818514&longitude=-77.1095268&search_string=4100+Fairfax+Dr+%23500%2C+Arlington%2C+VA+22203%2C+USA) * A Metro Station is located across the street

It's supposed to warm up a little heading into the Valentine's Day weekend so it's perfect weather to weed a park. We are NPS Weed Warriors and Arlington Regional Master Naturalists and you should volunteer with us on Sunday, February 15 to learn about nature and remove invasive plants from everyone's favorite urban island. Meet us at the entrance to the bridge (on the parking lot side, look for the sign) at 10:00 and bring your garden gloves and loppers/pruners if you have them. If not, we can provide gloves and tools. Wear long sleeves and pants and don't forget a water bottle. We will have tasks ranging from easy (cutting English ivy and honeysuckle vines from trees) to hard (sawing down bush honeysuckle). Parking at TRI can be tight if it's a pretty day. When the parking lot is full, you can park in Rosslyn and take the trail down. If you can bike or walk or take public transit, that's wonderful. We'll see you there! Erica, Stephanie, and Heidi P.S. If you can't wait until then to RIP (Remove Invasive Plants!), go here to find more volunteer opportunities in Arlington parks: [Volunteer to Restore Native Habitat – Arlington Regional Master Naturalists (armn.org)](https://armn.org/volunteer-opportunities/)

Join us at the Chess Center offices (Suite 118, entrance on 2nd Avenue) on Saturday afternoons from 1:00 – 5:00pm ET for open play. Players of all abilities and ages are welcome. * Non-Members: $5.00/player table fee for the day. * Chess Center [Members](https://chessctr.org/membership/) always play for FREE ($0.00). Check our social media ([Twitter](https://twitter.com/uschess) / [Facebook](https://www.facebook.com/USChessCenter)) for closure announcements: The Chess Center is closed on major holidays. We also have chess sets, clocks, and [used chess books](https://chessctr.org/usedbooks/) for sale.

Come learn how money really works. We’ll cover how to grow it, protect it, get out of debt, and use smart retirement and infinite banking strategies to build long-term security.

Carnaval is here in the DMV! Live music, lively atmosphere, dancing, sing and SAMBA on February 14! Celebrate with the sensational Heitor Presser and Vava Samba School! https://posh.vip/e/we-are-carnaval

💖 𝐕𝐀𝐋𝐄𝐍𝐓𝐈𝐍𝐄’𝐒 𝐃𝐀𝐘 𝐋𝐈𝐕𝐄 𝐒𝐀𝐋𝐒𝐀 𝐁𝐀𝐍𝐃! 💖 𝐒𝐈𝐍𝐆𝐋𝐄𝐒 𝐚𝐧𝐝 𝐂𝐎𝐔P𝐋𝐄𝐒 𝐖𝐞𝐥𝐜𝐨𝐦𝐞! . 𝐋𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐭𝐨 𝐝𝐨 𝐭𝐡𝐢𝐬 𝐕𝐚𝐥𝐞𝐧𝐭𝐢𝐧𝐞’𝐬 𝐃𝐚𝐲? 𝐖𝐞𝐥𝐥 𝐥𝐨𝐨𝐤 𝐧𝐨 𝐟𝐮𝐫𝐭𝐡𝐞𝐫 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 “𝐖𝐞 𝐆𝐨𝐭 𝐘𝐨𝐮!” 💯 . 𝐓𝐡𝐢𝐬 𝐢𝐬 𝐭𝐡𝐞 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 𝐃𝐚𝐭𝐞 𝐍𝐢𝐠𝐡𝐭 𝐟𝐨𝐫 𝐂𝐨𝐮𝐩𝐥𝐞𝐬! . 𝐓𝐡𝐢𝐬 𝐢𝐬 𝐭𝐡𝐞 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 𝐑𝐨𝐦𝐚𝐧𝐭𝐢𝐜 / 𝐅𝐮𝐧 𝐄𝐬𝐜𝐚𝐩𝐞 𝐟𝐨𝐫 𝐒𝐢𝐧𝐠𝐥𝐞𝐬! . 𝐆𝐞𝐭 𝐲𝐨𝐮𝐫 𝐭𝐢𝐜𝐤𝐞𝐭𝐬 𝐍𝐎𝐖 𝐛𝐞𝐟𝐨𝐫𝐞 𝐩𝐫𝐢𝐜𝐞𝐬 𝐠𝐨 𝐔𝐏 𝐨𝐧 𝟏/𝟑𝟏 𝐚𝐭 𝐌𝐢𝐝𝐧𝐢𝐠𝐡𝐭! . 💥 𝐋𝐢𝐧𝐜𝐨𝐥𝐧 𝐒𝐭𝐫𝐞𝐞𝐭 𝐒𝐚𝐥𝐬𝐚 💥 𝐅𝐞𝐚𝐭𝐮𝐫𝐢𝐧𝐠: 💥 𝐋𝐢𝐯𝐞 𝐒𝐚𝐥𝐬𝐚 𝐁𝐚𝐧𝐝: 𝐀𝐥 𝐒𝐨𝐧 𝐃𝐞𝐥 𝐈𝐲𝐚! . 💥 𝐒𝐚𝐭𝐮𝐫𝐝𝐚𝐲, 𝐅𝐞𝐛𝐫𝐮𝐚𝐫𝐲 𝟏𝟒 💥 𝟖 𝐩𝐦 – 𝟏 𝐚𝐦 . 🟣 Salsa, Bachata, and Merengue 🟣 Dancing All Night Long! . 👉 𝐁𝐮𝐲 𝐒𝐔𝐏𝐄𝐑 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐫𝐝 𝐓𝐢𝐜𝐤𝐞𝐭𝐬 𝐍𝐎𝐖 𝐚𝐭: https://columbussalsadancing.com/live-salsa-band-tickets-super/ . Lincoln Street Salsa 1717 Brice Rd Reynoldsburg, Ohio 43068 . 🟣 𝐑𝐞𝐠𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧 8:00 pm – 8:30 pm . 🟣 𝐁𝐞𝐠𝐢𝐧𝐧𝐞𝐫 𝐃𝐚𝐧𝐜𝐞 𝐋𝐞𝐬𝐬𝐨𝐧! 8:30 pm – 9:30 pm . 🟣 𝐎𝐩𝐞𝐧 𝐃𝐚𝐧𝐜𝐞 𝐏𝐚𝐫𝐭𝐲 𝐖𝐢𝐭𝐡 𝐋𝐢𝐯𝐞 𝐒𝐚𝐥𝐬𝐚 𝐁𝐚𝐧𝐝! 9:30 pm – 1:00 am . ✅ Cover Includes Dance Lesson and/or Party! . 👉 𝐁𝐮𝐲 𝐒𝐔𝐏𝐄𝐑 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐫𝐝 𝐓𝐢𝐜𝐤𝐞𝐭𝐬 𝐍𝐎𝐖 𝐚𝐭: https://columbussalsadancing.com/live-salsa-band-tickets-super/ . 👉 $𝟐𝟎 𝐒𝐔𝐏𝐄𝐑 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐫𝐝 𝐓𝐢𝐜𝐤𝐞𝐭𝐬 (𝐄𝐧𝐝𝐬 𝟏/𝟑𝟏 𝐚𝐭 𝐌𝐢𝐝𝐧𝐢𝐠𝐡𝐭!) . 👉 $𝟐𝟓 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐫𝐝 𝐓𝐢𝐜𝐤𝐞𝐭𝐬 (𝐄𝐧𝐝𝐬 𝟐/𝟏𝟒 @ 𝟓 𝐩𝐦!) . 👉 $𝟑𝟎 𝐀𝐭 𝐭𝐡𝐞 𝐃𝐨𝐨𝐫 . ✅ 𝐍𝐨 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐍𝐞𝐜𝐞𝐬𝐬𝐚𝐫𝐲! ✅ 𝐍𝐨 𝐏𝐚𝐫𝐭𝐧𝐞𝐫 𝐑𝐞𝐪𝐮𝐢𝐫𝐞𝐝! ✅ Always Other People to Dance With! ✅ Singles, Couples, Beginners, and Pros Welcome! . ✅ BYOB ✅ 18+ . ✅ 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬? 𝐕𝐢𝐬𝐢𝐭: LincolnStreetSalsa.com 𝐎𝐫 𝐓𝐞𝐱𝐭 𝐓𝐨𝐝𝐝: 𝟔𝟏𝟒-𝟕𝟕𝟒-𝟖𝟏𝟒𝟔 . 👉 𝐁𝐮𝐲 𝐒𝐔𝐏𝐄𝐑 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐫𝐝 𝐓𝐢𝐜𝐤𝐞𝐭𝐬 𝐍𝐎𝐖 𝐚𝐭: https://columbussalsadancing.com/live-salsa-band-tickets-super/ .

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.

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow