hey Shalini, good question! I should've instead written, '13 root server clusters'.
Here are some ways the root servers scale:
- they have replicas: 1,936 root server instances across the world
- they route the requests to the closest available server (via anycast routing)
- caching values at different client levels before the root server reduces the traffic
I found a site to track root servers: https://root-servers.org/
The client request uses UDP for low overhead and fast response. Hope it helps!
Thank you so much Neo!
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hey Shalini, good question! I should've instead written, '13 root server clusters'.
Here are some ways the root servers scale:
- they have replicas: 1,936 root server instances across the world
- they route the requests to the closest available server (via anycast routing)
- caching values at different client levels before the root server reduces the traffic
I found a site to track root servers: https://root-servers.org/
The client request uses UDP for low overhead and fast response. Hope it helps!
Thank you so much Neo!