I have been told, probably repeatedly, that Special Pages are generated automatically every 3 days but the ones I regularly use https://en.wikipedia.org/wiki/Special:UnusedCategories and https://en.wikipedia.org/wiki/Special:WantedCategories, were supposed to update some time on August 22nd and didn't.

This happened again in the past 15 minutes and lasted about 4 or 5 minutes.

Well, I noticed that some bots, like AnomieBOT III, is back to issuing reports, while others, like SDZeroBot, are still affected. I guess it takes a while for everything to return to normal.

I don't understand the difference between what is "production" and what is not (and what difference that makes to the developers) but, again, I'm with Jonesey95. All information that is communicated is valuable to us volunteer editors, including what you have just shared here today. Most of us have our daily editing routines and handling problems that show up on bot or database reports is part of our daily work. When they go down, we understandably have questions.

Monday is not "soon", at least not to me on this Friday night. But I appreciate any specific estimate.

And now there is a 34 hour lag! How can a system catch up with a lag longer than a day?

And now it's 18 hours behind.

Just a reminder that today is June 1st and the Special Pages, at least the ones we utilize on En.Wiki, typically get generated on the 1st of the month...and then the 4th, 7th, 10th, 13th, 16th, 19th, 22nd, 25th, 28th and sometimes the 31st. If they could get back to being generated on their old, regular schedule, that would be great!

This happened again today. The special pages involving categories eventually updated at around 00:30 UTC on May 29th but so far, no updates today on May 31st and they usually also update on the 1st of every month so the reports should have been issued both today and also tomorrow....so we'll see.

Looks like everything is fixed now. Thank you for getting right on this bug report!

I'm also experience problems with Quarry, 2 bots on en.wiki which haven't issued their regularly scheduled reports and receiving "overflow" messages when I try to look at page histories earlier today. Are these connected?

I'm also experience problems with 2 bots on en.wiki which haven't issued their regularly scheduled reports and receiving "overflow" messages when I try to look at page histories earlier today. Are these connected?

I'm also experience problems with two bots on en.wiki which haven't issued their regularly scheduled reports and receiving "overflow" messages when I try to look at page histories earlier today. Are these connected?

Looks like this special pages posting lag is happening again, on En.Wiki, special pages involving categories typically, for years, updated around 13:00-15:00 UTC time every 3 days but on May 25th, they updated at 19:00 UTC and today, they haven't updated at all. I'd prefer that they "catch up" and post sometime today rather than skipping a date and just updating again on June 1st as they did at the beginning of May when this lag was first reported. A late update is better than omitting an update!