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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.
About your second point, the plain text master password is not submitted in the controller, the master password is firstly hashed on the front end using the encryption key as a salt(100,100 + 1 iterations of PBKDF2), and then in the back end again hashed another 100,000 times using a random salt. Take a look at the security schema here , the authentication service in the front end here and the back end Symfony config which handles the password before the controller here
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