This is a tracking task; not for estimating

We want to cache node ->Mediawiki requests to reduce our load on the servers and increase performance.

The three requests we have are:

• The entity data from Special:EntityData
  • Currently varnish cached
  • Tom doesn't think that we should cache this
• The messages T218077
  • Not varnish cached
  • Probably should be in process cached
  • Could be cached by a dedicated http cache to be shared between instances but we probably can't consider this until later/YAGNI
• The content languages T218078
  • Not varnish cached
  • Probably should be in process cached
  • Could be cached by a dedicated http cache to be shared between instances but we probably can't consider this until later/YAGNI