Detection and scheduling method, device, and node of content delivery network

A Content Delivery Network (CDN) detection device, comprising:

• an issuing module configured to issue one or more IP addresses in a first IP segment to a plurality of CDN nodes;
• a receiving module configured to receive link detection results reported by the plurality of CDN nodes, the link detection results comprising information of time delay for accessing the IP addresses by the CDN nodes;
• and
• a processing module configured to select, from the plurality of CDN nodes, a priority scheduling node of the first IP segment based at least on the information of time delay.

A device comprising a processor and a non-transitory computer-readable memory, wherein:

• the memory stores program codes;
• and
• the processor is configured to execute the program codes from the memory and perform:
• issuing one or more IP addresses in a first IP segment to a plurality of Content Delivery Network (CDN) nodes;
• receiving link detection results reported by the plurality of CDN nodes, the link detection results comprising information of time delay for accessing the IP addresses by the CDN nodes;
• and
• selecting, from the plurality of CDN nodes, a priority scheduling node of the first IP segment based at least on the information of time delay.