We’ll be upgrading our SQL cluster masters to SQL 2016 CU1 on Wednesday night at 9:00PM EDT (01:00 August 4th UTC). The outage window should be minimal, a few minutes at most as we move all services to the current replicas. Details One of the unexpected issues we hit with the SQL 2016 upgrade was a performance degradation, resulting in much higher CPU usage on the masters of our SQL cluster wit…