What are the risks of disabling caching on the DNS server?

Disabling caching on the DNS server can help prevent DNS cache issues, but it can also increase the load on the DNS server and lead to other issues. Here are some risks of disabling caching on the DNS server:

1. Increased DNS server load: Disabling caching on the DNS server can increase the load on the DNS server, as the server will need to process more DNS queries and look up DNS records more frequently.
2. Slower DNS resolution: Disabling caching on the DNS server can lead to slower DNS resolution times, as the server will need to perform a lookup for every DNS query it receives.
3. Increased network traffic: Disabling caching on the DNS server can increase network traffic, as the server will need to send and receive more DNS queries and responses.
4. Increased vulnerability to DNS attacks: Disabling caching on the DNS server can increase the vulnerability of the server to DNS attacks, such as denial-of-service (DoS) attacks, as the server will need to process more DNS queries and may become overwhelmed by the volume of traffic.
5. Reduced DNS availability: Disabling caching on the DNS server can reduce the availability of the DNS service, as the server may become overwhelmed by the volume of DNS queries and may be unable to respond to all requests.

In general, it’s recommended to keep DNS caching enabled on the DNS server, as this can help improve DNS resolution times and reduce the load on the DNS server. However, if DNS cache issues are occurring, it may be necessary to temporarily disable caching or adjust the caching settings to prevent issues.

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