公开(公告)号：US11323414B2

公开(公告)日：2022-05-03

申请号：US16533191

申请日：2019-08-06

Applicant: CLOUDFLARE, INC.

Inventor： Marek Vavrusa ,  Anbang Wen

IPC: H04L61/5046 ,  H04L61/4511 ,  H04L61/5069 ,  H04L61/4552 ,  H04L67/1036 ,  H04L67/568 ,  H04L12/18

Abstract: A Domain Name System (DNS) resolver node receives a first DNS query from a first client device. The resolver node determines that it cannot answer the query using its local cache so it performs a recursive query to obtain the answer. The answer is sent to the first client and stored in its local cache. The resolver node further transmits the answer to multiple other resolver nodes that are part of the same cluster so they can update their respective local cache with the information. Upon receiving a message from another resolver node that includes a set of resource record(s) not in its local cache, the resolver node stores that set of resource record(s) in its local cache so that it can locally answer subsequent requests for those resource record(s) locally.

公开(公告)号：US10375016B1

公开(公告)日：2019-08-06

申请号：US16208438

申请日：2018-12-03

Applicant: CLOUDFLARE, INC.

Inventor： Marek Vavrusa ,  Anbang Wen

IPC: G06F15/16 ,  H04L29/12 ,  H04L29/08

Abstract: A Domain Name System (DNS) resolver node receives a first DNS query from a first client device. The resolver node determines that it cannot answer the query using its local cache so it performs a recursive query to obtain the answer. The answer is sent to the first client and stored in its local cache. The resolver node further transmits the answer to multiple other resolver nodes that are part of the same cluster so they can update their respective local cache with the information. Upon receiving a message from another resolver node that includes a set of resource record(s) not in its local cache, the resolver node stores that set of resource record(s) in its local cache so that it can locally answer subsequent requests for those resource record(s) locally.