Freqfs: In-memory filesystem cache for Rust

Re:Freqfs: In-memory filesystem cache for Rust by haydnv on Friday October 01, 2021 @04:01PM (#28722773)

It might be possible to replace freqfs with mmap on a POSIX OS, but a) you would still have to implement your own read-write lock, and b) you would (I think probably?) lose some consistency in behavior across different host operating systems.

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Re:Freqfs: In-memory filesystem cache for Rust by vlovich123 on Friday October 01, 2021 @04:15PM (#28722949)

Which OSes does this run on that doesn’t have some kind of mmap operation?

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Re:Freqfs: In-memory filesystem cache for Rust by haydnv on Friday October 01, 2021 @05:17PM (#28723467)

It should work on Windows (because tokio::fs works on Windows) although I have not personally tested this

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Re:Freqfs: In-memory filesystem cache for Rust by julian37 on Friday October 01, 2021 @05:35PM (#28723643)

You can do mmap on Windows, eg. https://github.com/danburkert/memmap-rs

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Re:Freqfs: In-memory filesystem cache for Rust by gpderetta on Friday October 01, 2021 @04:10PM (#28722895)

mmaps for read, explicit API for writing, a-la LMDB. Buggy readers can read inconsistent data but cannot corrupt the os.

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Re:Freqfs: In-memory filesystem cache for Rust by otterley on Friday October 01, 2021 @04:39PM (#28723181)

Corrupt the OS? How might that happen?

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Re:Freqfs: In-memory filesystem cache for Rust by gpderetta on Friday October 01, 2021 @06:30PM (#28724066)

Sorry, I meant the DB!

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