We are planning to perform a database upgrade on Thursday June 7th, 2018, at 12:00 PDT / 19:00 UTC. We have scheduled the maintenance for two hours, but don't anticipate it will take that long.
For a period of time during the upgrade, all API *write* calls will be impacted; for example, `cf push`, `cf start`, `cf scale`, `cf restage`, `cf restart`, `cf stop`, and `cf delete` will be unavailable. Near the end of the upgrade, there will be a small window of time (on the order of 10 seconds) during which API *read* calls, such as `cf apps`, will also be unavailable.
We do not expect availability of running applications to be affected by this upgrade.
If you have any questions or experience unexpected issues during the upgrade, please contact firstname.lastname@example.org