I think it's a good signal for microservices architecture - at least at this scale. When things have broken, it's only been one piece of the platform for me, rather than the site breaking entirely.

Things I've seen broken over the past week:

* Notification counts - this is replaced by an empty blue dot

* Media - text-only tweets and replies work fine, no profile pictures though

* Replies - root tweets load fine and show an error if you try to open replies. If you try again enough times they would usually load.