Stop Blocking Virtual Threads: Building Asynchronous Human-in-the-Loop AI Agents with Spring AI

Stop Blocking Virtual Threads: Building Asynchronous Human-in-the-Loop AI Agents with Spring AI In 2026, letting autonomous AI agents execute high-risk enterprise tools without human oversight is a production liability, but blocking platform threads—or even Project Loom’s virtual threads—for hours waiting for a manager's Slack approval is absolute architectural malpractice. We must transition from synchronous execution loops to stateless, event-driven agent hydration where the LLM's reasoning st