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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.
For networking, I'm using ESP-AT Command Firmware, specifically this one, as it's the only one I found that fits on the small flash of ESP-07 while having TLS support needed for Google. With this firmware flashed to ESP you connect it to Pi via UART and use AT commands to tell ESP what to do. You can find the list and description of these commands in the linked repo.
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