Traditional databases(mysql, postgres) are perfect for transactional data. users, products, orders and the like. but they aren't made for tracking events which is typically huge volume. that's why we used clickhouse db here which scales to billions of events easily.

We also have sdks that you can use in your app to publish the events to our services. You can also query these events on our app, create trends, funnels, see how many people on day 1 has retained till day 7, who are my top 10 ios users etc.

you can play around the demo on an already seeded project at https://app.pug.sh/demo