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disable cache

May 20, 2008
If enabled, creates an issue in file download, because IE tries to download the cache beforehand and cannot,
for that do the following:
response.setHeader(“Cache-Control”, “”);
For gzipped compressed data sending: (Deflated by the browser on receiving)
response.setHeader(“Content-Encoding”, “gzip”);
Before sending – check if browser supports the encoding type – from the header  req.getHeader(“accept-encoding”);

In HTML: (in the header)

<META HTTP-EQUIV=”Cache-Control” CONTENT=”no-cache”>

Make HTTP POST call — only HTTP GET calls are served from cache or (2) Make sure the HTTP GET URL is different every time.Append a unique parameter to the HTTP GET call so that the URL is different every time. A unique time stamp is a good choice

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