GoWroc #63

Hey Gophers! ☀️

The days are getting longer, the sun is finally making a comeback, and the summer vibes are definitely in the air! It’s the perfect season to recharge, and what better way to do it than by powering up with the GoWroc #63 meetup? Join us on May 26th at Wędrówki Pub.

Expect the usual great company, interesting talks, and a chance to catch up with the community before the holiday season kicks in. 🍺

See you there! 🎉

📅 Agenda

🕕 17:45 Networking
Let’s grab a beer and catch up 🍺

🕕 18:00 Talks

➡️ Paweł Kowalak: Designing low latency systems

Trading systems live or die by tail latency. Service that looks fast on average can be unusable in the 1% of requests that actually matter. This talk is a live tour through three versions of an Order Management System in Go: a naive Postgres-backed handler, an in-memory mutex-per-account variant, and a single-writer actor model. We’ll load-test all three side by side and watch p50, p90, and p99 in a real time.

🕖 19:00 It's networking time and while refueling our energy let's take another chance to chat with your fellow gopher!

➡️ Marcin Antas: Quantization Techniques for AI Models and Vector DBs

This presentation explores practical quantization methods to reduce memory and latency of AI systems. We cover quantization techniques for LLMs and embedding models, followed by a deep dive into Weaviate’s vector indexes (HNSW, Flat) and quantization options including Binary Quantization (BQ), Scalar Quantization (SQ), Product Quantization (PQ), and Rotational Quantization (RQ). Through live demo with Weaviate and multi-vector embeddings models showcasing how easy it is to create an AI-powered OCR system.

🕢 20:15 Networking

👥 Speakers

➡️ Paweł - backend engineer at alpaca.markets, currently building low-latency trading and crypto systems in Go. His background spans Linux ops, networking, and security, with a long-standing interest in distributed systems.

➡️ Marcin - Core Engineer at Weaviate. He works with Java and Go on a daily basis, building Weaviate – the database of the future. He is a pragmatic programmer with a passion for AI and ML algorithms. He is always happy to learn about new stuff and to pass the knowledge to others. When not acting techie he is working his way towards the Iron Man contest in Hawaii, training every day to qualify for that prestigious event.

🌍 Go Developers Network

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