If you have enabled the Public Zone Traffic Analysis feature for your domain name and want to reduce the analysis fees, use the following methods.
Method 1: Purchase a data transfer plan
If your domain name receives a high volume of DNS requests, purchase a data transfer plan for DNS traffic analysis of public authoritative zones. A data transfer plan offers a lower unit price than the pay-as-you-go billing method. The larger the plan, the lower the price per 10,000 DNS requests. Available plans provide quotas of 10 million, 100 million, 1 billion, and 10 billion requests.
Billing is performed daily. If you purchase a data transfer plan within a billing cycle, its quota is automatically deducted when the bill is generated.
If a bill has already been generated for the previous billing cycle, a data transfer plan purchased afterward cannot be used to offset those fees. It applies only to the next billing cycle.
If the data transfer plan's quota is exhausted, additional DNS requests are billed on a pay-as-you-go basis. For more information about the billing rules, see 2. DNS traffic analysis (pay-as-you-go).
Method 2: Adjust the TTL values of DNS records
The time to live (TTL) value determines how long DNS records are cached in the local DNS servers. You can adjust the TTL values of DNS records cached in the authoritative DNS servers to determine how long the DNS records can be cached in the local DNS servers.
To accelerate DNS resolution and reduce the workload of recursive servers, some Internet service providers (ISPs) adjust the TTL values of DNS records cached in their local DNS servers. In this case, how long the DNS records can be cached in the local DNS servers is not determined by the TTL values configured for the authoritative DNS servers.
During the TTL period, the DNS requests initiated by clients can match the DNS records cached in the local DNS servers, and recursive DNS requests are not forwarded to the authoritative DNS servers. In this case, the authoritative DNS servers do not receive DNS requests.
After the cache duration expires, the local DNS server deletes the record. If a user terminal then initiates a DNS request, a recursive query is sent to the authoritative DNS server, which processes the request.
To reduce costs for DNS traffic analysis of public authoritative zones, increase the TTL value of your DNS records—for example, from 1 minute to 10 minutes.
If your domain name is integrated with Global Traffic Manager (GTM) and the TTL value is increased, abnormal IP addresses are cached for a longer time after failover. We recommend that you do not adjust the TTL value.
To modify a DNS record, we recommend that you reduce the TTL value of the DNS record first. After the TTL period expires, modify the DNS record.
Procedure
Click the target domain name to go to the Settings page.
In the Actions column of the target DNS record, click Edit.
In the Edit Record panel, change the TTL value, and then click OK.
For more information, see How to configure TTL.
Method 3: Apply for a business discount
If neither Method 1 nor Method 2 can solve your issue, add the DingTalk account behladu for consultation.