Working on Tweet delivery delays 3 years ago

We are investigating the source of tweet delivery delays this morning.

Update (10:51a): We’ve temporarily disabled lists and local trends as we further diagnose the delay problem.

Update (11:10a): The delivery issue has improved and lists, local trends and name search remain temporarily disabled. Some users will also not receive delivery of tweets via SMS.

Update (11:36a): Local trends and lists have been re-enabled and we are working on the SMS delivery issue.

Update (12:27p): SMS delivery has been re-enabled.

Update (2:00p): Systems are back to normal with the exception of tweet delivery to the Facebook application which is still delayed.