i'm currently having issues with browsers apparently caching the output of my cgi scripts, such that hitting 'back' or following a link to a script that has been called previously does not re-call the cgi script.

naturally, this often ends up with the old (and usually incorrect) information being shown.i have tried setting the http 'expires' header to 'now' and '-10d' (using the CGI::header method), and then verified the http headers by telnet'ing to port 80 and issuing manual http 1.1 GET's... all looks well - the expires header is there and set to the correct date/time etc...

one thing i've done which is perhaps a little unusual is that all my scripts do not have suffixes - they are simply named 'query', 'results' etc -- i have accordingly setup apache to execute as CGI anything in a particular directory (and kept all my library *.pm's elsewhere...).

can any web monk(-ey) provide any explanation or pointers as to why the silly browser (any browser) continues to cache the output of my cgi's?

d_i_r_t_y

In reply to http header / browser caching issues by d_i_r_t_y

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.