M_ 8: Design a MySQL table for message queue to store message data

Homework : Design message queue to store message data  MySQL  form

【 Job requirements 】

1.  Include table name 、 Field 、 Indexes ;

2.  Use words to describe the design ideas and reasons , for example : Why design an index ?

3.  One page  PPT  that will do .

【 Tips 】

1.  You need to consider one table per message queue , Or put all the messages in one table , Add a “ Queue name ” Field of .

【 Design thinking 】

1. In the form of a table for each message queue ;

2. Table of database corresponding to queue ;

3. Each theme is allocated to multiple consumers ;

4. The snowflake algorithm is used to generate messages  id;

【 design scheme 】

Message table ：topic_producer_xx

message_id  Create unique index , To guarantee idempotence .

Consumption table ：topic_consumer_xx

status  Create a normal index , A message that is not consumed for easy query .