On 5/4/15, Scott Doctor <scott at scottdoctor.com> wrote: > > The issue of locking a file during concurrent access seems to be > a major issue, mostly due to the schizophrenic abilities of > network file systems. Has the SQLite development team considered > embedding its own file locking system logic, such as creating > its own lock file to prevent damage from concurrent write > access, that does not rely on the network file system? Seems > that if the issue is due to the design of the network file > system, which we have no control, then embedding some internal > logic system that handles self-flagging of a lock condition > seems a reasonable course to pursue. >
The "unix-dotfile" VFS (which is built into standard SQLite builds on Unix) does exactly that. Problem is that if your application crashes, it might leave behind stale locks that need to be cleaned up manually. -- D. Richard Hipp drh at sqlite.org
