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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.
There are several libraries that implement SAP RFC that you could use e.g. https://sap.github.io/PyRFC/, depending on the language you want to use. Other possibilities are wrapping the RFC in a web service to be able to call it via SOAP or wrap it in a OData Service and call this. Just one remark: Using this opens the door to the whole indirect use discussed. That means that depending on your use case SAP may want additional money for each call. Google SAP digital access if you are interested in learning more.
NOTE:
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