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How good is the ttl setting when resolving domain names? I believe that many inexperienced people are at a loss about this, so this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

It is generally appropriate to set the TTL value to 10-15 minutes when resolving domain names. TTL is the abbreviation of Time-to-live, which is used to indicate how long the corresponding relationship between domain name and IP is valid. After the expiration of the validity period, you have to query it again.

The longer the TTL time and the longer the cache time, the less likely it is for the update to take effect in a timely manner. If the TTL setting is smaller, the effective time will be faster. In general, domain name service providers recommend that the TTL value be set in the range of 10-15 minutes.

TTL (Time-To-Live), which simply represents the time that a domain name resolution record is cached on the DNS server. When the local DNS server receives the resolution request, it will send the resolution request to the DNS server specified by the domain name to obtain the resolution record. After obtaining this record, the record will be saved in the DNS server for a period of time. If the resolution request for this domain name is received again during this period, the DNS server will no longer issue a request to the DNS server, but will directly return the record just obtained. The time this record is kept on the DNS server is the TTL value.

Generally speaking, the steps for updating domain name resolution are as follows:

1. Check the current TTL value of the domain name first.

2. Modify the TTL value to the minimum value that can be set, and it is recommended to be 60 seconds.

3. Wait one day to make sure that the DNS server caches everywhere have expired and the records have been updated.

4. Set the modified DNS to parse to the new record, and at this time, the DNS of each place can be updated to the new record as quickly as possible.

5. After confirming that the DNS of each place has been updated, set the TTL value to the commonly used value (such as: TTL=900, that is, TTL value is 900s).

After reading the above, have you mastered how many good methods to set ttl when resolving domain names? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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