How do I migrate users from RDS mysql databse to aws cognito user pools?

Question

我有一个 ios 应用程序，当一个人登录时，uath 通过 cognito（就位）发生，此外，由于我的所有用户数据都在 rds mysql 中，我还希望它检查用户的电子邮件 ID 是否存在在 rds mysql db 中与否。为此，我想创建一个用户迁移 lambda 触发器。请告诉我我的架构是否有意义？

Answer 1

There are multiple questions in a single question but I will answer anyway:

How do you migrate users? You could just create a single-execution task to migrate your users from your MySQL db to Cognito, the only and biggest problem... could be the password info, I assume that you do not have it on plain text.

You could just send an email to all users about updating their password and give them a unique link to do so.

Another option is to keep that db and table for the users, when a new user logs in, just create/add the user to cognito with the password provided.

I assume that you might have this flow right now:

1. User logins with user/password
2. Server authenticates password and user to be on MySQL (password should not be in plain text) and returns the user info.

so, you could change it to be:

1. User logins with user/password
2. Server authenticates on cognito, if failed:
3. Server authenticates password and user to be on MySQL
4. Server adds user on cognito
5. Return user info

And in ... 3 months? or something, you could just drop the DB since you already have most users in cognito.

Answering the about architecture question:

I dont have enough context but seems complicated, why are you changing to cognito, any preference or feature that you want to use?