Engineering on TS's Notebookhttps://tayts.vercel.app/categories/engineering/Recent content in Engineering on TS's NotebookHugoenSun, 25 Oct 2026 15:20:00 +0800Demystifying Tokio's Timer Wheel: How Async Rust Keeps Time at Scalehttps://tayts.vercel.app/posts/demystifying-tokio-timer-wheel/Sun, 25 Oct 2026 15:20:00 +0800https://tayts.vercel.app/posts/demystifying-tokio-timer-wheel/A deep dive into how Tokio's hierarchical timer wheel uses bitwise math, intrusive linked lists, and cooperative I/O drivers to manage millions of concurrent Rust timers in O(1) time.What I Got Wrong About Wakers: Building an Async Executor in Rusthttps://tayts.vercel.app/posts/what-i-got-wrong-about-wakers/Sun, 20 Sep 2026 16:45:00 +0800https://tayts.vercel.app/posts/what-i-got-wrong-about-wakers/Lessons learned from building a custom async executor in Rust from scratch, explaining cooperative task yielding and how Wakers route notifications across OS threads.Building a Low-Volume Batch Worker Without a Database: Using S3 as Task Storagehttps://tayts.vercel.app/posts/s3-task-store-queue/Tue, 23 Jun 2026 00:00:00 +0800https://tayts.vercel.app/posts/s3-task-store-queue/Learn how to build a durable, database-free batch task queue on Amazon S3 using conditional writes (ETags), inverted ULIDs for newest-first ordering, and zero-byte polling markers.