Google mod_pagespeed?

Many of you are surely familiar with Google's PageSpeed tool for
diagnosing slow pages. A few years ago they put out an Apache module,
mod_pagespeed to implement some of their best practices as a
webserver-level set of transformations.


https://developers.google.com/speed/pagespeed/module
I looked at it and at the time, thought it was neat, but Plone out of
the box (or with caching) already did a lot of its main best
practices. And so I put it aside for a while.

Recently, I was looking at it again, and was delighted to see that
Google has continued to develop it very aggressively, and has added a
*ton* of features that seem highly relevant to Plone sites, including:

* An Ngnix module (!)
* Automatic domain sharding
* Highly flexible automatic image recompression and optimization
* SPDY support
* Javascript and CSS optimization (over and above what ResourceRegistries does)
* Canonicalizing Javascript libraries (e.g. Jquery, etc.)
* Lazy image loading
* Automatic image spriting of CSS background images

I've not seen much discussion of this in a Plone context... are folks
out there using it in production deployments? Would love to hear about
your experiences. Seems like it is a low-cost and very useful bag of
best practices to (carefully) deploy on any site where speed matters
(and isn't that most sites?).

--Jon

---
Jon Stahl
http://jstahl.org
206.226.0818

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