docs: add multi-agent reference architecture - #1030
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This provides a reference architecture for deploying multiple agents within a single Quarkus application. Fixes a2aproject#898
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Overview
This PR adds a reference architecture documentation page detailing how to scale A2A Server Agents by hosting multiple distinct agents within a single Quarkus application.
Fixes #898
The Problem
Deploying a single agent per Quarkus app (1:1 mapping to kubernetes pods) incurs significant operational overhead and resource consumption when the number of agents grows into the hundreds. Users needed official guidance and a reference architecture for deploying multiple
AgentCards and JSON-RPC handlers from a single application platform.The Solution
Added a dedicated
Multi-Agent Scalingpage to the documentation site. The guide explains how to bypass the default@ApplicationScopedsingletons and manually register Vert.x routing paths for individual agents (e.g.,/{agentId}/.well-known/agent-card.json), allowing a single app to dynamically host an unlimited number of agents with minimal overhead.