[wp-trac] [WordPress Trac] #11903: insert_with_markers is not threadsafe

[WordPress Trac]

#11903: insert_with_markers is not threadsafe
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 Reporter:  strings28     |       Owner:  ryan       
     Type:  defect (bug)  |      Status:  new        
 Priority:  normal        |   Milestone:  3.0        
Component:  Permalinks    |     Version:  2.9        
 Severity:  major         |    Keywords:  needs-patch
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Comment(by Denis-de-Bernardy):

 I don't like the flock() idea. flock() isn't always available and is
 tricky to use on some servers, as was revealed by plugins such as wp-cache
 and its derivatives.

 the "standard" workaround is to write to a temporary file, and then to
 rename the temporary file, overwriting the target file as needed.

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Ticket URL: <http://core.trac.wordpress.org/ticket/11903#comment:3>
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