Async Runtime Internals: How tokio Schedules Your Futures

Async concurrency isn't about avoiding locks; it is about understanding the precise moment a thread yields and how the runtime recovers execution flow. What We're Building We are dissecting the inner workings of the Tokio runtime to understand how a Future transitions from a pending state to execution. This scope focuses on the event loop's polling mechanism, the handling of I/O readiness, and the implications for task ownership. We will not cover the standard library implementation or tokio::ta