I want to cache the whole website, once a site changes I want to expire its cache e.g. via HTTP request from one of the backends.

How do I set up nginx to have a cache with unlimited TTL, how would I expire single cache items when the content needs to be updated?

Thx in advance.

See http://forum.nginx.org/read.php?2,39564,39564#msg-39564

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Jim Ohlstein