'Design usage based billing model for IoT platform
I have a IoT platform that sends each user's usage to Kafka topic (at least once per minute).
user's usage:
[{"userId":"1", "usagetype":"type1", "count":5},{...}]
- what is the best database to store user's usage? (I have considered Cassandra so far )
- How to store data in database so that data is optimized when calculating bills?
- how can calculate bills for lots of users (periodic or based on stream) and how store them?
Sources
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