--- title: "How Rust engineered the perfect async runtime" url: https://daily.dev/posts/how-rust-engineered-the-perfect-async-runtime-patddedwc source_url: https://www.youtube.com/watch?v=FUg1y-yv6cs type: video:youtube source: "Let's Get Rusty" published: 2026-05-15T15:18:05.463Z updated: 2026-05-15T15:18:22.457Z tags: ["rust"] reading_time: 8 upvotes: 31 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How Rust engineered the perfect async runtime **[Let's Get Rusty](https://daily.dev/sources/letsgetrusty)** · 8 min read · 31 upvotes · 0 comments ## Summary A deep dive into how the Tokio async runtime works under the hood, covering its seven core components: tasks, scheduler, executor, local queues (ring buffers), global queue, and the reactor (IO driver). Explains the work-stealing scheduler design introduced in 2019 that made Tokio 10x faster, how lock-free local queues fit in CPU cache, and how the reactor bridges async tasks with OS-level IO events via Mio. Includes a full lifecycle walkthrough of a single async task and a benchmark showing 150,000+ HTTP requests per second on a single thread. The video is part of a launch series for a paid Rust mentorship program. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Evolution of Async Rust: From Tokio to High-Level Applications](https://daily.dev/posts/the-evolution-of-async-rust-from-tokio-to-high-level-applications-uwvht0pbc) · JetBrains · 48 upvotes · 0 comments --- Tags: [#rust](https://daily.dev/tags/rust) [View this post on daily.dev](https://daily.dev/posts/how-rust-engineered-the-perfect-async-runtime-patddedwc)