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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Worth taking a look at django-auditlog. I haven't used it myself but I am looking into a similar problem at the moment. It looks like it does what you need with the ability to do a lot more if needed.
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