Pass on to customers what we have learned from the recent performance tuning on CAC, via the Apache mod_disk_cache.

• DONE: Add a new page as child of "Running Confluence behind Apache", called Configuring Apache to Cache Static Content via mod_disk_cache
  https://confluence.atlassian.com/display/DOC/Configuring+Apache+to+Cache+Static+Content+via+mod_disk_cache

• DONE: Review of the above page by IT (James Gray)

• DONE: Reduce severity of support warning on all the Apache config pages:
  • https://confluence.atlassian.com/display/DOC/Running+Confluence+behind+Apache
  • https://confluence.atlassian.com/display/DOC/Using+Apache+with+mod_proxy
  • https://confluence.atlassian.com/display/DOC/Using+Apache+with+virtual+hosts+and+mod_proxy
  • https://confluence.atlassian.com/display/DOC/Using+Apache+with+mod_jk

• DONE: Add links to the new page from these pages:
  • https://confluence.atlassian.com/display/DOC/Performance+Tuning – just mention this tip in particular, and point to relevant docs.
  • https://confluence.atlassian.com/display/DOC/Configuring+a+Large+Confluence+Installation – just mention this tip in particular, and point to relevant docs.
  • https://confluence.atlassian.com/display/DOC/Cache+Performance+Tuning – just mention this tip in particular, and point to relevant docs.
  • https://confluence.atlassian.com/display/DOC/Running+Confluence+behind+Apache – just mention this tip in particular, and point to relevant docs.