| # Create Topic |
| |
| ## Background |
| |
| The `TopicMessageType` concept is introduced in RocketMQ 5.0, using the existing topic attribute feature to implement it. |
| |
| The topic is created by `mqadmin` tool declaring the `message.type` attribute. |
| |
| ## User Example |
| |
| ```shell |
| # default |
| sh ./mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c DefaultCluster |
| |
| # normal topic |
| sh ./mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c DefaultCluster -a +message.type=NORMAL |
| |
| # fifo topic |
| sh ./mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c DefaultCluster -a +message.type=FIFO |
| |
| # delay topic |
| sh ./mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c DefaultCluster -a +message.type=DELAY |
| |
| # transaction topic |
| sh ./mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c DefaultCluster -a +message.type=TRANSACTION |
| ``` |
