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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 backup, I recommend Borg. The tool supports compression, versioning, encryption and deduplication out of the box. Thus, the backup only takes a little longer the first time. After that, it is very fast and does not require much storage space.
If you want a graphical interface, you can look at Vorta. A script that already covers many use cases would be borgmatic.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.