How Is Origin Pull If the Origin Server Has Multiple IP Addresses?

If the origin servers have multiple IP addresses, the following load balancing mechanism is used for origin pull.

• An origin pull request can be forwarded to up to two IP addresses of the primary origin server. If origin pull from both IP addresses fails, the request is forwarded to the standby origin server. The request can be forwarded to up to two IP addresses of the standby origin server. If origin pull fails again, the request fails.
• Origin pull fails when the connection times out, the connection fails, or a 5xx error code is returned from the origin server.