資料庫 onhttps://h30306.github.io/blog/zh-tw/database/Recent content in 資料庫 onHugo -- gohugo.iozh-twhwork0511@gmail.com (Wei Yi Chung)hwork0511@gmail.com (Wei Yi Chung)© 2026 Wei Yi ChungTue, 08 Apr 2025 22:11:03 +0800Sharding, Hot Shards, And Cross-Shard Painhttps://h30306.github.io/blog/zh-tw/database/sharding-hot-shards/Wed, 27 May 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/zh-tw/database/sharding-hot-shards/Shard key 不是選一個欄位而已，而是承擔 workload、skew、routing 和 transaction trade-offReplication Lag And Replica Routinghttps://h30306.github.io/blog/zh-tw/database/replication-lag-and-replica-routing/Tue, 26 May 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/zh-tw/database/replication-lag-and-replica-routing/把 read replica 從讀流量擴充，講到 read-after-write correctness 和 routing policyTransactions, Isolation, And MVCChttps://h30306.github.io/blog/zh-tw/database/transactions-isolation-mvcc/Tue, 19 May 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/zh-tw/database/transactions-isolation-mvcc/把 ACID、isolation anomalies、MVCC、locking 和 retry 拆成可防守的 backend 答案Composite Index And Query Triagehttps://h30306.github.io/blog/zh-tw/database/composite-index-and-query-triage/Tue, 12 May 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/zh-tw/database/composite-index-and-query-triage/用 predicate、order、projection、plan shape 和 write cost 判斷 composite index 是否真的對B+Tree And Index Internalshttps://h30306.github.io/blog/zh-tw/database/btree-and-index-internals/Tue, 05 May 2026 00:00:00 +0000hwork0511@gmail.com (Wei Yi Chung)https://h30306.github.io/blog/zh-tw/database/btree-and-index-internals/從 page read、access path、selectivity、row fetch 和 write tax 重新整理 index 心智模型