How to safely maintain a status file

Laszlo Nagy gandalf at
Thu Jul 12 14:31:50 CEST 2012

>     Renaming files is the wrong way to synchronize a
> crawler.  Use a database that has ACID properties, such as
> SQLite.  Far fewer I/O operations are required for small updates.
> It's not the 1980s any more.
I agree with this approach. However, the OP specifically asked about 
"how to update status file".

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