comment on

Is there some spooky content command or something to tell a user's browser to not cache files or something like that so this doesn't crop up for other users?

these HTTP header values may be relevant

'Pragma'    =>    'no-cache' 
'Cache-Control'    =>    'no-cache'
'Expires'    =>    0
[download]

another method is to make sure the URL is different each time (e.g. by appending a GET parameter showing the current datetime).

hth!

update: don't forget, the user's browser isn't the only place that caching can occur. it can happen at your end, at the user's end, or anywhere in between (e.g. reverse caching proxy at the ISP)

In reply to Re^3: How to wait until GD Image it written, then continue by andye
in thread How to wait until GD Image it written, then continue by pstone

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Don't ask to ask, just ask
	PerlMonks