record-level locking...

[tracker1]

It would be nice if you can do a record level lock for read/write...

fs.flock(fd, 'sh', function(err){
  fs.flockRead(bytesToRead, function(err, buffer){
    //buffer should be the bytes read after an exclusive lock of that record
    // offset at the current position, for the length of the bytes requested to read.
  });
  fs.flockWrite(buffer, function(err){})
});

[sam-github]

flock doesn't support record level locking: https://linux.die.net/man/2/flock

[baudehlo]

I think it's only possible on Windows (not sure if there's mechanisms to do this on Unix-like OS's). It seems like a terribly fragile piece of technology to use, and must be NTFS only.

On Wed, Feb 6, 2019 at 12:59 PM Sam Roberts [email protected] wrote:

flock doesn't support record level locking: https://linux.die.net/man/2/flock

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[sam-github]

Unixen have byte-range locking:

• http://man7.org/linux/man-pages/man3/lockf.3.html
• Advisory record locking in http://man7.org/linux/man-pages/man2/fcntl.2.html