MediaWiki:Apihelp-expandtemplates-paramvalue-prop-ttl
A fragment of the Garden of Remembering
The maximum time after which caches of the result should be invalidated.
The maximum time after which caches of the result should be invalidated.
The one exception (because it actually happens) is don't bathe your baby in the same container/tub/sink you bathe your pet snake in. Salmonella + baby = no good.