https://skyaching.com/tags/concurrency/ Recent content in Concurrency on skyaching https://skyaching.com/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E https://skyaching.com/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E Hugo -- 0.147.8 zh-tw Tue, 02 Jun 2026 22:00:00 +0800 https://skyaching.com/tech/idempotency-unique-index-scheduling/ Tue, 02 Jun 2026 22:00:00 +0800 https://skyaching.com/tech/idempotency-unique-index-scheduling/ 一個排程系統的冪等性實戰：read-then-write race condition、為什麼鎖不是正確性的來源、Unique Constraint 藏在 run_id 裡的漏洞、Oracle function-based 條件式唯一索引，以及最後逼出來的狀態欄設計問題。