Personalised email service
Hi, I want to build something like a emailing service which sends personalised emails from a retention perspective , I want the service to monitor db stats and based on that send out emails if required, like if a user has not logged in from past 1 week i want to send an email to them . any thoughts on how should I implement this? I want it to be scalable since there might be huge number of users (10K for now) , I was thinking of using something like redis and storing such events over it and then weekly scan through the keyspace(using a cron job, like, create a keyspace named login_track_user and then store lastLoggedIn time) and send out emails . Is this good ?
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