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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.
Merry Christmas buddy.
You'll find a ton of public datasets on GitHub [1].
Maven Analytics offers a monthly data analytics challenge [2] that you can enter for free. See their past competitions for some interesting datasets.
As I'm based in Ireland I'll also recommend the Irish Data Portal [3].
[1] https://github.com/awesomedata/awesome-public-datasets
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