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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.
Whatsapp provides API at least for business. Moreover, in theory the use signal protocol and signal library that are open source and available. Moreover, there are many projects, browser, that can connect to whatsapp server as rambox or ferdi.
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