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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.
while limited PHP code was much easier to deploy on a webserver than Perl code; then there was mod_perlite https://github.com/sodabrew/mod_perlite which had the right idea but quite late
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