Change iframe URLs to include content hash
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Key: SHINDIG-50
URL: https://issues.apache.org/jira/browse/SHINDIG-50
Project: Shindig
Issue Type: New Feature
Components: Gadgets Server - Java
Reporter: Graham Spencer
Assignee: John Hjelmstad
The gadget server creates iframes that point to a "jail domain". The iframes
include gadget content as well as boilerplate Javascript.
To improve browser latency, the iframes should have long cache timeouts.
However, this conflicts with our goal of allowing developers to control the
refresh rates of their gadget.xml files. Therefore, the iframe URLs should
include a hash of their contents, and the page itself should have a long
expiration time. This means that the browser will reload the iframe only when
the gadget.xml is changed.
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