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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.
The big thing is the examples they have. I use Visual Studio Code with the ESP-idf extention, and if I want to learn a new functionality, I load an example and break it down. There is also the website https://learnesp32.com, which does a very high level understanding of the code, but if you have prior experience with other micro-controllers, than that probably isn't necessary.
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