[azernik]

I used to work at Meraki. There, we would, every 5 minutes or so, record byte and packet counts classified by traffic class and remote end of the connection for every single client connected to an SMB internal or customer-facing network.

(Meraki actually did implement its own time-series database, and after I left published a paper describing its design and implementation. https://meraki.cisco.com/lib/pdf/trust/lt-paper.pdf. Good quote on the motivation: "As discussed in Section 2.3.3, customers have a nearly insatiable demand for high-resolution historical data, even though they mostly query data from the recent past."

[nerdbaggy]

Any more good links from them?

[azernik]

Not that I can find - it's a proprietary solution for internal use only.