I have a server of my own property in housing at a data center in Milan Caldera with a dedicated band of 1Gbps, I set up a website monitor with Zabbix (installed in a server outside the datacenter and on Fastweb FTTC connivity) and I immediately realized a strange behavior on the response times of sites with Cloudflare enabled.
I enclose the charts of this night of three sites all related to the same time slot and all hosted on the same server:
- Website without Clouflare
- Website with Cloudflare Pro
- website with Clouflare Free
The graph shows a bandwidth cut on the two sites with Cloudflare at night in Italy (01:00 UTC - 07:00 UTC), is there a reason for this behavior? Did we activate something wrong with the Clouflare configuration? Is the same thing measurable in the night hours of other geographical areas?