Method for resolving DNS requests contained in a CDN service

摘要

Method for resolving DNS requests contained in a CDN service, comprising identifying an end node or content server that can service the best way to an end user who has sent a request for DNS resolution system ISP DNS, given a network geographically distributed end points, characterized in that said DNS resolution is performed by performing: I) a phase DNS resolver, comprising performing the following steps: a) sending, said system DNS resolver of ISP, DNS request received from an authorized subzone DNS server or previously identified or known by sending a request to the DNS root server requested domain; b) forward, said authorized said subzone DNS server, said DNS request to the tracker operating in said subarea, and forward, said tracker, the DNS request received one (end node 2; MAD2; NE-2-OB2 ; NE-2-R2; D3-1-R1) of said end nodes participating in said DNS resolution phase; and II) an HTTP redirect, comprising performing the following steps: c) solving, said end point participating in said DNS resolution stage (end node 2; 20 MAD2; NE-2-OB2; NE-2- R2, D3-1-R1), the system location ISP DNS resolution using a database partition ID to identify: - the data center (BCN) which can provide the best content; or - at least one end node (NE-1-OB2; NE-1-R2; D3-2-R1) in the same data center can provide the content; d) performing, said end point participating in said DNS resolution stage (end node 2; MAD2; NE-2-OB2; NE-2-R2; D3-1-R1), a function consisting hash on requested URL associated with said DNS request, to construct a URL using a substring of the MD5 hash function content request and the location of the data center (BCN) which can provide the best content or location of said at least one end node (NE-1-OB2; NE-1-R2; D3-2-R1) in the same data center can provide the content, and send the address to the end user, directly or through entities intermediate, using a redirection message.