Technical articles on backend, databases and the web.https://blog.clarkliu.com/tech/https://blog.clarkliu.com/posts/2026-09-24/https://blog.clarkliu.com/posts/2026-09-24/Not satisfied with the textbook definition — let's walk through how to actually use it, step by step.Thu, 24 Sep 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-10/https://blog.clarkliu.com/posts/2026-07-10/One big investigation, and I'll dig your entire performance problem straight out of the ground.Mon, 27 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-09/https://blog.clarkliu.com/posts/2026-07-09/Learn Prometheus well — it won't burst out of a pregnant woman's chest.Thu, 09 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-08/https://blog.clarkliu.com/posts/2026-07-08/What's up... is your API made of gold, or are the third-party modules made of gold?Wed, 08 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-07/https://blog.clarkliu.com/posts/2026-07-07/You say there's a problem, so there's a problem? Says who, you baka.Tue, 07 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-06/https://blog.clarkliu.com/posts/2026-07-06/The database has caches of its own. A look at the Buffer Pool — still indispensable today — and the Query Cache, which once existed but was finally removed in MySQL 8.0.Mon, 06 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/2026-07-05/https://blog.clarkliu.com/posts/2026-07-05/What is the second-level cache? How do you use it? And why do we rarely hear about it these days?Sun, 05 Jul 2026 00:00:00 GMThttps://blog.clarkliu.com/posts/20260510/https://blog.clarkliu.com/posts/20260510/A walkthrough of DNS — from browser cache to Authoritative Name Server.Sun, 10 May 2026 09:30:00 GMThttps://blog.clarkliu.com/posts/my-first-post/https://blog.clarkliu.com/posts/my-first-post/Just buy it, no second thoughts needed.Thu, 30 Apr 2026 09:30:00 GMT