When do reviews refresh?

I note that the list of reviews I get back from a query for booksort=entry_REV&limit=reviews doesn't reflect reviews I've entered in several days. How often does the data source get sync'd?

Adding a new review doesn't seem to cause an update.

Okay, this is weird. I just added The Thoughts of Chairman Miaow to my library, and reviewed it at the same time that I set the entered/read dates and the tags. My home page shows this review, and then a bunch from much longer ago. My review page shows the full list. And the RSS feed hasn't caught up to either (edited to note: until this morning).

Aha; figured it out. There's no sort option for "review order".