From the CGI.pm docs...
Most browsers will not cache the output from CGI scripts. Every time
the browser reloads the page, the script is invoked anew. You can
change this behavior with the -expires parameter. When you specify an
absolute or relative expiration interval with this parameter, some
browsers and proxy servers will cache the script's output until the
indicated expiration date. The following forms are all valid for the
-expires field:
+30s 30 seconds from now
+10m ten minutes from now
+1h one hour from now
-1d yesterday (i.e. "ASAP!")
now immediately
+3M in three months
+10y in ten years time
Thursday, 25-Apr-1999 00:40:33 GMT at the indicated time & date
So, you'd want this...
print $Q->header(-expires=>'-1d');
Kindest Regards,
--
Bill Stephenson
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