Memory mapping is a poor way to make a database[0], not all storage can be memor... | Hacker News

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		jandrewrogers on April 22, 2023 \| parent \| context \| favorite \| on: The “Build Your Own Database” book is finished Memory mapping is a poor way to make a database[0], not all storage can be memory mapped, and this doesn't provide any of the functionality you expect of a database like indexing and concurrency control. [0] https://db.cs.cmu.edu/mmap-cidr2022/

jfrisby on April 23, 2023 | [–]

I saw a headline about the book on Reddit and made a joke to a friend of mine: "How much you wanna bet it uses mmap?" Well...

It uses mmap.

mgaunard on April 23, 2023 | [–]

The concurrency control is managed by the server that manages access.

All databases that are any different than these two points are just bad.

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