I am a newbie and therefor I’m even not sure, for which keywords I could search to find a solution. So, here is my challenge.
The data source is sending measurements to InfluxDB 1.8.5 via Telegraf 1.18.1 over UDP to the inputs.socket_listener only, if measurement-values are changing. E.g. changes may happen for certain measurements only once per hour, but for others every second as well.
I am using Grafana for the visualization. The issue is, if I zoom into a smaller time-range e.g.15 minutes, there may be no data for the slowly changing measurement. Then the measurement series disappears completely from the panel/diagram. But I really would need to see even the slowly changing measurement with it’s past value, which exists before the time-range, and may be interpolated to the value, which exists after the time range.
Is there any way to accomplish this?
P.S. At the moment I have worked around this issue. With a small “proxy” app I am repeating the actual value every 10 seconds and sending it to InfluxDB. But for me this is a quite annoying approach.