Hello @stephane ,
I recently found that cloudflare send a lot of caching requests to my server.
HK (Hong Kong) is the location of my IP address, so i should connect to Cloudflare’s HKG (Hong Kong) Edge.
But now all the traffic has been routed to SIN (Singapore) Edge under my domain, other domain don’t have this problem.
https://cloudflare.com/cdn-cgi/trace result
fl=23f160
h=cloudflare.com
ip=<my_hk_ip>
ts=1509102333.672
visit_scheme=https
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36
colo=HKG
spdy=h2
http=h2
loc=HK
https://<my_domain>/cdn-cgi/trace result
fl=35f80
h=<my_domain>
ip=<my_hk_ip>
ts=1509102689.7
visit_scheme=https
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36
colo=SIN
spdy=h2
http=h2
loc=HK