How can I adjust the caching settings to prevent DNS cache issues?

Adjusting the caching settings on the DNS server can help prevent DNS cache issues and ensure that DNS resolution is reliable and efficient. Here are some steps that can be taken to adjust the caching settings on the DNS server:

• Increase the cache size: Increasing the cache size on the DNS server can help prevent DNS cache issues by allowing the server to store more DNS records in its cache. To increase the cache size, open the DNS console, right-click on the DNS server, select Properties, select the Advanced tab, and modify the “Cache Size” setting.
• Adjust the caching time: Adjusting the caching time on the DNS server can help prevent DNS cache issues by controlling how long DNS records are stored in the cache. To adjust the caching time, open the DNS console, right-click on the DNS server, select Properties, select the Advanced tab, and modify the “Time to Live (TTL) for Cached Records” setting.
• Enable DNS scavenging: DNS scavenging is a feature that can be used to automatically remove stale DNS records from the DNS cache. Enabling DNS scavenging can help prevent DNS cache issues and ensure that the DNS cache is up-to-date. To enable DNS scavenging, open the DNS console, right-click on the DNS server, select Properties, select the Aging tab, and configure the scavenging settings.
• Monitor DNS cache usage: Monitoring the DNS cache usage on the DNS server can help prevent DNS cache issues by providing insight into how the cache is being used and whether it is being overwhelmed by DNS queries. To monitor DNS cache usage, open the DNS console, right-click on the DNS server, select Properties, select the Monitoring tab, and view the cache statistics.

By taking these steps, administrators can help prevent DNS cache issues and ensure that DNS resolution is reliable and efficient. It’s important to note that adjusting the caching settings can impact DNS performance and should be done carefully and with consideration for the needs of the organization.

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