Google Chrome Cache

I have an html page that embeds a flash (flex) application.

I have the following headers:

<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">
<M开发者_如何学CETA HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-STORE">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1">

In addition, each time I release a new version of the app, I change the file name. So, it becomes something like MyApp_v1.swf, which is then updated to MyApp_v2.swf.

Despite this, chrome still caches the html page and the swf file. This is a major problem, as clients do not then see the updated swf unless they clear their browser cache.

I even tried to get around this with changing the htaccess file, and renaming the index.html file that hosts the swf file:

RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^(.*)$ https://www.mysite.com/app[R,L] 
DirectoryIndex index.html #this was changed from myapp.html

Even after doing this, Chrome still caches the swf, and is STILL reading from the old html file. I do a view source on the html, and its still showing the old file.

This all works fine in any other browser.

These two bug reports relate, some good relevant information in here:

Issue 28035 - chromium - Cache doesn't adhear to No cache options ( google crome )

Issue 64139 - chromium - Cache isn't revalidated properly, no-cache directive

Another solution may be to add specific cache-control or pragma HTTP headers as mentioned in the links above

Also, dumb question, did you clear chrome cache before testing your <meta> no-cache tags? wondering if it is still using cache from before your changes.

For all you guys struggeling with this
i found something simple that works...

i tried
1. ctrl + f5
2. ctrl + shift + 5
3. setting the "no cache" in developer tools..

What worked for me in the end is to
Just hold the CTRL key while you click the reload icon!

Use this "no-store" extra tag, and the cache works fine in Chromium (Chrome) as in the other capable browsers:

header("Cache-Control: no-cache, no-store, must-revalidate");

header("Pragma: no-cache, no-store");