Explaining the internals of async-task from the ground up

The post delves into the internals of the async-task crate in Rust, illustrating how to handle asynchronous tasks efficiently. It demonstrates the use of the smol and futures-lite crates to run multiple futures concurrently and addresses scalability issues for high-level concurrency scenarios. The post provides a detailed explanation of implementing a custom polling mechanism and highlights inefficiencies and limitations, setting the stage for further optimization in future discussions.