One of the key trends in software infrastructure in 2019 is Observability…

To paraphrase H.S. Thompson’s Fear and Loathing in Las Vegas, ’We had two virtual machines, seventy-five sites, thousands of metrics and machines to monitor, a bunch of Python scripts, one database and one message queue, InfluxDB, and a whole galaxy of multi-colored libraries… and also pandas…

This is short article about understanding time series and main characteristics behind that.