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rclone
"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files
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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.
rsync would be my suggestion. Try something like https://github.com/rsyncOSX/RsyncOSX
MacOS is UNIX based so, coming from 10+ years of Linux maybe you want to focus your research there so you tweak the system more to your liking... have you checked anything on rclone.org FAQs or forums? Maybe you don't need to change what you had originally imagined...
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