Programmer - Is it appropriate to use Redis to implement the following function?

Question

Hello everyone, I am new to redis. I saw someone on the Internet using redis to implement the follow function, and the follow-related data are stored in redis. But I personally understand that redis is suitable for caching and storing hot data. Data such as attention is obviously core data. Why should we use redis? In this case, the data related to the focus will be separated from other data stored in Mysql?

Noob, thank you very much for your help!

Answer 1

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