Heatmap for request rate / durations by doc type (government-frontend)

[richardTowers]

This is useful for getting a feel for which document types get the most traffic, and which ones are fast / slow.

Dashboard in experimental form here: https://grafana.eks.production.govuk.digital/d/fea5k4nydlhc0b/richard-towersat-government-frontend-heatmaps?folderUid=VE8lzSyVz&orgId=1&from=now-24h&to=now&timezone=browser&var-namespace=apps&var-app=government-frontend&var-controller=content_items&var-action=show

[theseanything]

Do you wanna leave it in the experiments folder for a bit and see how much use/how useful it becomes before adding it to our main collection?

[theseanything]

Nit: Wasn't super obvious to me that these are requests to the Frontend applications (as opposed to CDN) - dunno if it's possible to add a title or description somewhere?

[richardTowers]

Yeah, I'll pop this in to draft and leave the dash in experiments for now. We can add it to the main collection once it's proved its worth / been improved sufficiently.