Commits on May 12, 2024

1. Synchronize files after writing …

   fsync(2) is a somewhat expensive operation that flushes writes to the
   underlying disk/SSD. It's typically used by databases to ensure that
   writes survive very hard failure scenarios like your cat kicking the
   plug out of the wall. Synchronizing isn't automatically done by
   `flush`ing (from the `std::io::Write` or `tokio::io::AsyncWriteExt`
   traits). From the [`tokio::fs::File`] moduledocs:
   
   > To ensure that a file is closed immediately when it is dropped, you
   > should call `flush` before dropping it. Note that this does not ensure
   > that the file has been fully written to disk; the operating system
   > might keep the changes around in an in-memory buffer. See the
   > `sync_all` method for telling the OS to write the data to disk.
   
   [`tokio::fs::File`]: https://docs.rs/tokio/latest/tokio/fs/struct.File.html

   

   the-mikedavis committed May 12, 2024
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