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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.
Is there a reason you don't prefer a CMS? I know Wordpress could be an overkill for just photo uploads, something like Chevereto (https://chevereto.com/) or Piwigo (https://piwigo.org/demo)?
NOTE:
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