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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.
There is https://github.com/Kron4ek/Conty although is not really too lightweight. You can set a different home directory by setting HOME_DIR environment variable. Yo also have sandboxing but I haven't play much with it yet.
maybe firejail might help? https://firejail.wordpress.com/
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