Defvayne23

Memcache can be great to store variables, but beware of Memcache::flush. The function actually requires about 1 second to finish. Below is the best way to handle it:

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 $oMemcache->flush();
 
// Wait for memcache to finish flushing
$time = time()+1; //one second future
while(time() < $time) {
//sleep
}

You can find more info here.