Need of caching on bind server

[Harshith Mulky]

Hello,


I am trying to understand why caching is required on the bind server, when the client receiving the responses would be caching based on TTL values.


So,

Is caching required on the server, if the client is not able to cache such responses? Isn't it a overhead on both the client and server systems to cache the same responses at respective ends

What are the possible Use cases of caching the responses at the Server?

What if there is a dynamic updates of Records on Server and Server still sends the cached Responses?


Thanks

Harshith
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