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django-watson
Full-text multi-table search application for Django. Easy to install and use, with good performance.
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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.
Another option is you could look at https://github.com/etianen/django-watson which I have used in the past, but I am not positive if it would work how you want.
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