[whatwg] Fwd: [gears-users] Version in manifest is not enough

Michael Nordman michaeln at google.com
Wed Sep 23 11:00:16 PDT 2009

Food for thought around the AppCache feature which can be similarly affected
i think.

---------- Forwarded message ----------
From: emu <emu.huang at gmail.com>
Date: Sun, Sep 20, 2009 at 8:31 AM
Subject: [gears-users] Version in manifest is not enough
To: Gears Users <gears-users at googlegroups.com>

Some times the response of the web server be changed by some proxy
servers or even the ISPs(some times they try to add some ads or filter
something), and google gears will cache the changed content an will
not check before the manifest file change again, and some times the
manifest files change before the files they list changed because of
the CDN problem. When these happends, wrong captured files becomes a
disaster. It's very hard to findout what happends to the clients'
If gears has a second-check option, like this:
       { "url": "abc.html", "md5": "92d9b0186331ec3e" }
it'll be very very helpful.
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