System Design

📌 Planned placeholder page: this page is reserved for "Case studies of high-concurrency, high-availability architectures", and the content will be filled in progressively along with learning.

Planned Content

• [ ] Case studies of high-concurrency
• [ ] high-availability architectures

Next Steps

• [ ] Complete this page item by item against the planning checklist in the Domain Overview
• [ ] Add runnable examples and pitfall records for each entry
• [ ] Change the status from "Planned" to "Collected" when done

For writing guidelines, please refer to the Domain Overview.