Uber-migrated-pg-to-mysql.md Why Uber EngineeringSwitched from Postgres toMySQL - Uber EngineeringBlog のまとめ Posgresqlだと pgは追記型なので少しの更新でも多くのdiskへのwriteがおきる カラムを一つ更新しただけで多くのindexの書き換えが起こる よって、replicationはWALを送るので更新が多いとWALが大量に送られる repcliationでは物理的なdiskの変更を送る DC間でレプリするときつい bugがあってreplica間でMVCCの不整合が起きる masterとreplica同じdisk上のデータ構成を共有するのでupgradeがつらい cache readはsyscallとosのpage cache経由なので重い 1コネクション1プロセス
We here are very big fans of Postgres as adatabase and believeit is often the bestdatabase for the job. For many though, working with and maintaining Postgres involves a steep learning curve. Thisguide is designed as anaid for beginners and experienced users to find specific tips and explore tools available within Postgres. If you want to take the quick & painless approach instead, there are
PostgreSQLGUI tool formacOS PSequel provides a clean andsimple interface for you to perform common PostgreSQL tasks quickly. FAQWhy yet another PostgreSQLGUI client? Why notjust pgAdmin?Well, pgAdmin is great forits feature-richness. However, I founditsUI is clumsy and complicated. I know there is a list of PostgreSQLGUI Tools. However, they are either web-based,Java-based* or don't supp
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