I have a simple question about the review section on Stack Overflow. I only have enough reputation to review the First Posts and Late Answers, so I only notice them. I've noticed that the recent reviewers is updating very often; however, if I constantly click refresh (I've tried this), the First Posts and Late Answers remains at zero (But I believe there must be items to review because the Recent Reviewers is updating). This has caused me to think that the items to review might actually be different for different users.
Also, sometimes it seems like there's one or two new items to review every minute, then there won't be any, then 5 minutes later there will be 17 items to review. (And the updates don't seem to happen at 5 minute intervals...they'll appear at 8:49, 8:51, 8:52, 8:55, etc)
Finally, once I also saw a new user ask a question, and then about 15 minutes later, I was reviewing first posts, and I saw this user's question (it had come with 17 other items to review. In the 15 minutes before that question came into the review queue, there were a couple "lone" items to review every minute or so). So I had a question out of pure curiosity (and also to save myself from clicking refresh when I feel like reviewing): Is there any pattern to when the Items to review is updated?