Actually it caches to the tmp folder which is available in Heroku. Plus: http://devcenter.heroku.com/articles/caching-strategies#fragment_caching confirms fragment caching as an option.
My state that it has something do with memcache was incorrect, as like you said it writes to the file system. We have multiple dynos running, I wonder if that may be causing the issue. -- You received this message because you are subscribed to the Google Groups "Heroku" group. To post to this group, send email to heroku@googlegroups.com. To unsubscribe from this group, send email to heroku+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/heroku?hl=en.
