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You can create DNS records with longer TTL to increase caching and reduce queries.
To protect your hosted zone from NXDOMAIN DDoS attacks, you can refer to Configuring Route 53 for cost protection from NXDOMAIN attacks
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Hello.
In my environment, even when DNS records are not linked to a service, about 5,000 queries occur per month, so I think it is normal to have about 20,000 queries when linked to API Gateway etc.
Hi, agree with Riku: when a domain name gets public, you'll have multiple requests from other DNS servers in the world to create / refresh their cache about your domain info. To slightly reduce those requests, you can increase the allowed caching duration of your records.
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AWS 공식업데이트됨 일 년 전- AWS 공식업데이트됨 일 년 전
This help, but for me there is a one options which will be more helpfully for everyone, "ALIAS to null" or similar option which for specific subdomain will just reply with NXDOMAIN permanently, because now normal NXDOMAIN reply is PAID reply and NXDOMAIN also has smaller TTL forced by other DNS server, even if we setup high one, it's down to smaller one by public DNS resolvers for example... ;-(