I'm enthusiatic user of Elastic APM for several years and I am running Elastic APM on Kibana 7.15.0 to analyse web services written in Java and Python. Recently I found that Timeline pane in Transactions menu doesn't show spans for SQL, Redis etc. I went through kibana log but no proviso related with this omission was appeared.
I need elastic APM but I am lack of sufficient knowledge to operate it well..