Manual:$wgParsoidCacheConfig

Details
Configuration for the caching related to parsoid output. The configuration contains the following keys:


 * StashBackend - The name of the object store to be used by the ParsoidOutputStash service, which stores the base state of HTML based edits. Valid options are the keys of {@link $wgObjectCaches}, e.g. CACHE_* constants. Per default, the value of the MainStash setting will be used. This should be an object store that provides fairly solid persistence guarantees, since losing an entry from the stash may mean that the user can't save their edit. If, the value of the MainStash configuration setting will be used.
 * StashDuration - The number of seconds for which an entry in the stash should be kept. Should be long enough for users to finish editing, since losing an entry from the stash may mean that the user can't save their edit. This is set to one day per default.