HTTP cache on Rails + Nginx stackTwo ways to cache the uncacheable. Why you should not ever use expires_in inside rails to cache http request. How Nginx calcs ETag on static files and why we don’t care about it today. How correctly purge Nginx cache with one bash command. How totaly purge Rack::Cache in memcache even if it shared with Rails cache. Whats wrong with responding Cache-Control: max-age=N, where N greater than zero. Ho
