This topic describes the announcement for the Message Queue for MQTT upgrade from V2.x.x to V3.x.x, and the changes in using the service after this upgrade.

Announcement

Message Queue for MQTT was upgraded from V2.x.x to V3.x.x starting from July 23, 2020. This upgrade does not affect client messaging functions. However, if you have special requirements on the timing and window of the upgrade, submit a ticket for help.

Overview

The service procedure of Message Queue for MQTT will change after its upgrade from V2.x.x to V3.x.x. The following figure shows the change details.

use_change_overview

Description

Compared with V2.x.x, V3.x.x. versions of Message Queue for MQTT implement independent message storage without needing to be bound to Message Queue for Apache RocketMQ. Therefore, you can create a resource immediately after you purchase and create a Message Queue for MQTT instance. This reduces your costs for using and familiarizing yourself with the service.

Apart from independent storage, V3.x.x versions abstract the data exchanging feature between Message Queue for MQTT and Message Queue for Apache RocketMQ implemented by V2.x.x. versions. Therefore, you can configure rules to forward the data of Message Queue for MQTT to other Alibaba Cloud services, and import data from other Alibaba Cloud services into Message Queue for MQTT. Message Queue for Apache RocketMQ is supported for such rule-based data exchanges.

In general, this upgrade introduces the following changes.