[Upgrade notice] [AliwareMQ for MQTT upgrade notice in Mar 2023]

Upgrade windows, regions, and instance types that may be affected:
Mar 07, 2023 22:00 Beijing time - Mar 08, 2023 07:00 Beijing time [Hangzhou, Chengdu, Zhangjiakou]
Mar 14, 2023 22:00 Beijing time - Mar 15, 2023 07:00 Beijing time [Hangzhou, Beijing, Shanghai, Shenzhen, Chengdu, Zhangjiakou, Qingdao, Hohhot, Public]
Mar 21, 2023 22:00 Beijing time - Mar 22, 2023 07:00 Beijing time [Hangzhou, Beijing, Shanghai, Shenzhen, Chengdu, Zhangjiakou, Qingdao, Hohhot, Public, Singapore, Hong Kong]
Mar 28, 2023 22:00 Beijing time - Mar 29, 2023 07:00 Beijing time [Tokyo, Sydney, Kuala Lumpur, Jakarta, Manila, Mumbai, Frankfurt, Silicon Valley, Virginia, Dubai, London]
Mar 30, 2023 22:00 Beijing time - Mar 31, 2023 07:00 Beijing time [Hangzhou, Beijing, Shanghai, Shenzhen, Chengdu, Zhangjiakou, Qingdao, Hohhot, Public, Singapore, Hong Kong]


Upgrade Impact:
During the upgrade, the MQTT console and each service node in the cluster may experience a second-level flash (the flash time is positively related to the cluster scale). The client application needs to set automatic reconnection to avoid affecting the business.
During the upgrade period, there may be a small number of failures in message sending, and the application should implement a retry mechanism for disconnection failures; at the same time, there may be message delays. For administrative operations on the console, please avoid maintenance windows.
Sorry for the inconvenience caused to you, if you have any questions, please feel free to contact us through the ticket.