Hello

Some services will be in read-only for a short time on 2021-05-05 at 06:00 AM UTC. 

During the restart time (expected to be around 60 seconds or so) all the components and extensions that use the x1 database will be read-only.

Things that might experience some issues when creating new writes:

• New short urls cannot be created
• Email bounces from lists might not get recorded
• There might be issues with new translations
• New items on the notification list might fail, some notifications may not be delivered
• Reading lists might not record new items added to "bookmark" or "read it later" feature

Details: https://phabricator.wikimedia.org/T281212 & https://phabricator.wikimedia.org/T281375 --