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Documents of products collection are intentionally designed to be more complex and larger than accounts - I want to see what happens, what is the performance penalty mainly, once individual documents are stored on multiple database pages. In Postgres, page size is 8 KB by default - in practice, the goal is to have at least 4 rows stored on a single page, so every record that is larger than 2 KB is put on two or more disk pages. It obviously reduces performance for both writes & reads - more disk pages to read from and write to. In Mongo it works slightly differently in details, but essentially in the same vein - larger documents are stored on more than one page, degrading performance for all operations. In both cases we are about to see - how much exactly.。业内人士推荐爱思助手下载最新版本作为进阶阅读
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The biggest fear, perhaps, in Kyiv is that conflict in the Middle East fuels yet more war fatigue over Ukraine. One diplomat told me that despite rising temperatures as winter makes way for spring, the mood in the capital was grim.
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