You should set an HTTP header like Cache-Control or Expires.

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keakon



On Sat, Oct 30, 2010 at 6:12 AM, Martin Webb <[email protected]> wrote:
> using the examples in the google docs for rendering images from the
> datastore - i wont post any code - but in its simplest form
> it seems that the client browser always fetches the image? Why is this. I
> have seen some posts about using etags for content - do i need to do this
> for images.
> once the browser has the image it should not need to reload it.
> Does anyone have any image handler code that gets around this issue - or
> have i missed something.
>
>
>
> Regards
>
>
>
>
>
> Martin Webb
>
>
>
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