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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.
Network namespaces are a really nice feature for me. I use them for a few things. They are a simple and foolproof way of running programs in VPNs without having the whole system use the VPN, and you can have multiple of them, and even chain/nest them (foolproof as long as you remember to run it in the network namespace, such as a wrapper script or systemd service). WireGuard remembers the namespace it was created in and uses it for connecting to the VPN endpoint, so if you create it in your init namespace, then move it to a different namespace, programs in that different namespace can use the WireGuard interface which connects to the VPN endpoint using the original connection. Programs have no direct access to the internet if the VPN interface disappears. (https://www.wireguard.com/netns/#ordinary-containerization). There is also https://github.com/slingamn/namespaced-openvpn for OpenVPN.