Solved

upload file caching problem

Posted on 2004-10-18
2
181 Views
Last Modified: 2010-04-01
the new upload picture file does not display until i refresh the page. I believe this is a caching problem. So i added the following statements to prevent browser caching. But it didn't work. Is this a caching problem or something else? If this is a caching problem, how can i solve it?

 <%
response.setHeader( "Cache-Control", "no-cache" );
response.setHeader( "Pragma", "no-cache" );
response.setIntHeader( "Expires", 0 );

%>
0
Comment
Question by:jeff1919
  • 2
2 Comments
 
LVL 2

Accepted Solution

by:
siliconeagle earned 250 total points
ID: 12348340
you can add a date to the end if the image url to prevent image caching e.g:-
<img src="img.gif?<%= (new Date()).getTime() %>" />

is it the old image you see, or just no image?
if it's no image have you closed the file after writing it, maybe the webserver cannot read the file as it's open for writing.
0
 
LVL 2

Expert Comment

by:siliconeagle
ID: 12349193
some more headers to try are:-


// always modified
response.setHeader( "Last-Modified",""+(new Date()));
 
// HTTP/1.1
response.setHeader( "Cache-Control","no-store, no-cache, must-revalidate");
response.setHeader("Cache-Control","post-check=0, pre-check=0");
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The world seems to conceive of a curious bubble separating IT from “the business.”  More so than just about any other pursuit in the commercial world, people think of IT as some kind of an island.
We have put together a white paper that aims to explain how MSPs can both improve their offering and ease the pain of after-hours service by: -Suggesting changes to workflow -Indicating how to rework policy to suit your team -Providing ConnectW…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question