how to minify gzip format html page when used nginx as a reverse proxy?

[bekars]

I want to get the goal:
1) nginx run as a reverse proxy, the web server gzip the html format page,
and the client get the gzip page
2) nginx receive server gzip data then unzip it ==> minify html page ==>
gzip minify html page to cache
3) client request the page and get the minify gzip page from nginx cache

Questions:
1) How do I implement the idea in nginx structure?
2) Is there have any sample path to get the goal?

 Any help would be greatly appreciated.
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