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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.
Facebook Meta's Watchman Service looks very useful for watching for changes in files and directories to kick off automation. Still, there seem to be a bunch of gotchas with it that only come to light after trying to mess with it. The docs seem lacking, the Python library needs to be updated, and even the installation on non-Ubuntu or Red Hat distros requires a rebuild, which has been somewhat problematic given the build tools. Also, no official Docker container.
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