How we built 1,000 AI agents that run a marathon

Author: Google Cloud Tech - Bewertung: 12x - Views:113

Github repo → https://goo.gle/49tqnbl



A thousand AI agents. Each one a real Agent Development Kit (ADK) session. Running a marathon through Las Vegas, all at once. Here's how we built it.



In this episode of Hands On AI, Casey West walks us through Race Condition, the multi-agent system he led the development of for the Google Cloud Next 2026 Developer Keynote. It's open source, production grade, and built on Google's Agent Development Kit (ADK).



We tear down the architecture, the framework choices, and the patterns that make 1,000 simultaneous AI agents actually work:

* The 4-layer polyglot stack (Angular · Go · Python · Redis)

* Two dispatch modes: when HTTP-based A2A fails and Redis pub/sub wins

* Agent cards & A2A protocol, how agents discover each other

* Why ADK gives you sessions, callbacks, telemetry, and discovery for free

* The resilient_model pattern (retries + jitter + exponential backoff)

* global_gemini, targeting preview models on Agent Runtime

* Static vs dynamic instructions & context caching

* Skills: lazy-loaded context + tools for production agents

* Building a mesh of agents that can call each other



Chapters

00:00 - Intro & 1,000-Agent Demo

03:17 - The 4-Layer Architecture

05:23 - System Architecture Diagram

06:59 - Two Dispatch Modes: Subscriber vs Callable

09:54 - Why We Threw Out HTTP for Redis Pub/Sub

13:23 - Agent Cards & the A2A Protocol

16:24 - Why We Built on Google ADK

19:00 - resilient_model: Production-Grade LLM Calls

23:09 - global_gemini: Targeting Preview Models

24:41 - Static Instructions & Context Caching

28:19 - Skills: Lazy-Loaded Tools & Context

34:42 - call_agent & the Mesh Network

39:53 - The Vision: What Else Could Be an Agent?

41:36 - Next Episode Tease



More resources:

Google Agent Development Kit (ADK) → https://goo.gle/3PItVzL

Agent Runtime → https://goo.gle/4nXDhnX

Google Cloud Memory Store → https://goo.gle/4nXxBtT

Agent2Agent Protocol (A2A) protocol → https://goo.gle/4u5x8HF

Casey West on LinkedIn → https://goo.gle/4dXnsJr

Annie Wang on LinkedIn → https://goo.gle/43GCXAo



Watch more Hands on AI → https://www.youtube.com/playlist?list=PLIivdWyY5sqKnJOvP89yF8t9mWuzMTcbM

🔔 Subscribe to Google Cloud Tech → https://goo.gle/GoogleCloudTech



#AIAgent #MultiAgentSystem #AgenticAI



Speakers: Casey West, Annie Wang

Products Mentioned: Google Agent Development Kit, Gemini API, Agent Runtime, Google Cloud Pub/Sub, AlloyDB, Agent2Agent Protocol