[Alibaba Cloud][AliwareMQ for MQTT ][Upgrade Notice]
Upgrade windows, regions, and instance types that may be affected:
June 04, 2024 22:00 Beijing time - June 05, 2024 07:00 Beijing time [Hangzhou, Shanghai, Shenzhen, Beijing, Public]
June 06, 2024 22:00 Beijing time - June 07, 2024 07:00 Beijing time [Zhangjiakou, Chengdu, Qingdao, Hohhot]
June 18, 2024 22:00 Beijing time - June 19, 2024 07:00 Beijing time [Hangzhou, Shanghai, Shenzhen, Beijing, Public]
June 25, 2024 22:00 Beijing time - June 26, 2024 07:00 Beijing time [Hangzhou, Shanghai, Shenzhen, Beijing, Public, Zhangjiakou, Chengdu, Qingdao, Hohhot]
June 27, 2024 22:00 Beijing time - June 28, 2024 07:00 Beijing time [Singapore, Hong Kong, Tokyo, Sydney, Kuala Lumpur, Jakarta, Manila, Mumbai, Frankfurt, Silicon Valley, Virginia, Dubai, London]

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.