> Hi,
>
> I have an application where I based on users selections generate a
> dataset for them to download and a graph describing this data. The
> graph is made with gnuplot and work really well - no problems :-)
>
> But I save the graph to a file say "graph.png" in the
public/images
> dir and use it in the view. I have a strong felling that when more
> than one user is generating graphs I will have a problem, since
> they''ll keep overwriting the same graph again and again.
>
> I realize that I could add some sort of session id or time stamp to
> the image, but I don''t want to fill my server with abandoned
images
> and the users are not likely to request the same image/graph again any
> time soon.
>
> Is there any concept like a temp store where all files more than 5
> mins (or 1 day, don''t matter :-) old are deleted, or a round robin
> scheme where abandoned filenames get recyled.
>
> Have I missed some vital function, - or is it just a matter of a cron
> job to clean up after a hard days job?
Probably easiest to have cron do it. Make sure the filenames are
unique -- combo of user''s login and a timestamp say, then have your
cron job use ''find'' to find old files and delete them. Run it
every
hour or whenever necessary.
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