| 摘要 |
<p>Disclosed are a routing method based on a content delivery network and a device and system thereof, which relate to the field of content delivery networks. The method comprises: a routing server receiving a DNS request message sent by a DNS server; according to an IP address of the DNS server, determining, from a pre-established dynamic routing table, an edge server group with a shortest delay to the DNS server, the dynamic routing table being used to record a delay from each edge server group to each DNS server; selecting any edge server from the determined edge server group, and sending an IP address of the selected edge server to the DNS server through a DNS response message, so that the DNS server sends the IP address of the selected edge server to a user terminal. Through the embodiments of the present invention, an edge server group with a shortest delay to a user can be selected rapidly and accurately to provide a service for the user, thereby improving the quality of the CDN service.</p> |
