Patent ID: 11863417
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 17:
18. A computer-implemented method comprising:
under control of a hardware computing device configured with specific computer executable instructions:
obtaining, at a first domain name system (DNS) server from a client computing device, a first DNS query, wherein a first point of presence (POP) of a content delivery network (CDN) service provider includes the first DNS server, wherein the first DNS query is associated with a requested resource; and
responsive to obtaining the DNS query,
identifying a selected DNS resolution technique from a plurality of DNS resolution techniques;
selecting, based at least in part on the selected DNS resolution technique, (a) an alternative resource identifier associated with a second DNS server at a second POP of the CDN service provider or (b) an IP address of a cache component of the CDN service provider; and
transmitting, to the client computing device, the alternative resource identifier or the IP address.