IMO if you have 1000 users logged in, an extra 1000 requests/minute is in the noise. And I tend to be paranoid about such things (e.g. I would add a small rand

IMO if you have 1000 users logged in, an extra 1000 requests/minute is in the noise. And I tend to be paranoid about such things (e.g. I would add a small random number to the 60s delay to avoid synchronization).