in reply to Re: Strategies for temporary image files in CGI
in thread Strategies for temporary image files in CGI

Excel made it remarkably easy to change from GIF to PNG formats (just changing a parameter). And the image quality is pretty much the same, so that worked well. Thanks!

I like your first approach, since the chart data is coming from a query returning multiple records. If I read what you are suggesting correctly, I don't have to worry about time-stamps at all, just check the hash values. That would allow much longer time-to-refresh values for the files.

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Re: Re: Re: Strategies for temporary image files in CGI
by Roger (Parson) on Nov 21, 2003 at 19:22 UTC
    Personally I don't think the time-stamp is necessary. But your original post said there was a requirement of not generating a new image within 48 hours. The timestamp is used for that purpose. If your data is pretty static, you can certainly drop that 48 hour checking bit.

[reply]

      Indeed, data can't be refreshed more often that every 48 hours, but not all data will change in every update, so this is a superior solution.

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