Some insights into adding domain name resolution to Dnspod

1, the host record This step is relatively simple, the input "www" means a more regular domain name such as www.abc.com, "@" means abc.com, "*" represents the pan-resolution, matching all *.abc.com domain names.

2, record type This step, generally commonly used a record, the following record value input IP; When you have multiple domain names that need to point to the same server IP, you can make a record of a domain name point to the server IP, and then alias (that is, CNAME) the other domain name to the name of the A record Then, when your server IP address changes, you can not have to make changes to a domain name to point to, only need to change the name of a record to the server on the new IP, the other aliases (that is, CNAME) of those domain names will be automatically changed to the new IP address.

3, line type This step, the regular two lines are added "default" and "Unicom".

4, record value this step to fill in the content according to the previous "record type", a record is filled Ip,cname records fill in the domain name.

The full TTL value is "Time to live", which simply means that DNS records are cached on the DNS server for a time. To understand the TTL value, take a look at the following example: suppose, There is such a domain name myhost.abc.com (in fact, this is a DNS record, usually indicates that there is a host named Myhost in the abc.com domain) corresponding IP address of 1.1.1.1, it has a TTL of 10 minutes. This domain name or this record is stored on a DNS server named dns.abc.com. Now one user types the following address (also known as a URL) in the browser: http://myhost.abc.com what happens then? The designated DNS server for the visitor (or his ISP, Internet service provider, dynamically assigned to him) 8.8.8.8 will try to parse myhost.abc.com for him, of course 8.8.8.8 this DNS server because it does not contain myhost.abc.com this information, and therefore can not be resolved immediately, but through the global DNS recursive query, the final location to dns.abc.com this DNS server , dns.abc.com This DNS server will myhost.abc.com the corresponding IP address 1.1.1.1 tell 8.8.8.8 this DNS server, and then by 8.8.8.8 tell the user the result. 8.8.8.8 in order to speed up the resolution of myhost.abc.com this record, will just the 1.1.1.1 results for a period of time, this is the TTL time, in this period of time if the user has to myhost.abc.com this record resolution request, it directly tells the user 1.1.1.1, when T The TL expires and then repeats the above process.

Some insights into adding domain name resolution to Dnspod