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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.
Uploading files using a library built to support multi-part form through graphQL. Although this is pretty straightforward, it's not necessarily perfect as it is a privately maintained gem and doing uploads this way puts a lot of load on your server. https://github.com/jetruby/apollo_upload_server-ruby. This gem was built to mimic the file upload functionality of Apollo Server which is the popular Apollo server framework for node. This is likely the easiest solution to implement.
NOTE:
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Hence, a higher number means a more popular project.