Jiang BIAN, 14/04/2013 16:25:
Could you explain a little more about what the "lag" here refers to? (or point me some document about it if it's a common mediawiki concept/stuff)
It isn't. It's described at https://meta.wikimedia.org/wiki/Wikidata/Notes/Change_propagation
Normal MediaWiki only has https://www.mediawiki.org/wiki/Manual:Job_queue https://www.wikidata.org/wiki/Special:DispatchStats will hopefully be clearer if/when https://gerrit.wikimedia.org/r/#/c/59030/1/repo/Wikibase.i18n.php is approved.
Nemo