[Alibaba Cloud][Upgrade notice] [AliwareMQ for MQTT upgrade notice in JUN 2022]
Upgrade windows, regions, and instance types that may be affected:
JUN 07, 2022 22:00 Beijing time - JUN 08, 2022 07:00 Beijing time [Chengdu, Zhangjiakou, Dubai, Tokyo, Mumbai, Virginia]
JUN 14, 2022 22:00 Beijing time - JUN 15, 2022 07:00 Beijing time [Hangzhou, Chengdu, Zhangjiakou]
JUN 21, 2022 22:00 Beijing time - JUN 22, 2022 07:00 Beijing time [Hangzhou, Shanghai, Shenzhen, Chengdu, Zhangjiakou]
JUN 28, 2022 22:00 Beijing time - JUN 29, 2022 07:00 Beijing time [Beijing, PPublic, Qingdao, Hohhot, Singapore, Hong Kong]
JUN 29, 2022 22:00 Beijing time - JUN 30, 2022 07:00 Beijing time [Tokyo, Sydney, Kuala Lumpur, Jakarta, Manila, Mumbai, Frankfurt, Silicon Valley, Virginia, Dubai]


Upgrade Impact:
During the upgrade windows, the MQTT console and each service node in the cluster may experience second-level flashes (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 windows, 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 these upgrade windows.
Sorry for the inconvenience caused to you, if you have any questions, please feel free to contact us through the ticket.