General ideas for data collection and/or dashboards

[jorgelbg]

With the collected data (and a couple of small additions to the worker) we should be able to add the following info to the Dashboards:

• Recent requests
• Bytes fetched/sent from/to the origin
• Top User Agents
• % of requests per status code (the interesting ones, like 5xx)
• Google bot requests (this could be a dedicated dashboard)

This doesn't mean that we will add all of those, it is just a general issue to track what may be useful to have either data collected by the worker or directly visible in the dashboard.