> The website is expected to have a quite high traffic.

In that case, I recommend you use a database. Trying to do this from a file is going to give you problems. Try 'nosql' for a tiny but useful implementation. 

-- 
Education is not the filling of a pail, but the lighting of a fire.
 -- W. B. Yeats

In reply to Re: General question (speed, disk access etc) by oko1
in thread General question (speed, disk access etc) by natol44

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