DNS for short

As I mentioned before, DNS is a translation vector from computer readable names to human readable names. The concept is very similar to the cell phone remote book, or help menu, which translates remote cell phone numbers into names. The DNS device is sent over the Internet, in fact, every Internet company has one or more DNS servers, the maximum number of companies that host websites also work, and many large companies, such as Microsoft, Dell and HP, have their own servers. . . (Of course, if you have more than 30,000 employees, they’ll probably get help with their roster, too.)

Every person on the Internet uses DNS, 99% of them without knowing it. Every time you visit a website on the Internet, it looks up the DNS device to determine the area of ​​the website. Every time you send an email, your ISP’s mail server makes a DNS attempt to locate the mail server for that zone. As I mentioned, DNS works by cost, and there is no one server that has statistics for every zone. There are thirteen lucky servers, it includes a list of DNS servers that manage domains, looking for a place that your ISP’s DNS server no longer recognizes, it asks the servers to understand which DNS server approximately recognizes this zone, then queries the DNS server. the information you want before giving it back to you.

Change DNS servers

When you change web providers, the normal process is to extend your zone authorization to the new site hosting the providers’ DNS servers. This process, called redelegation, is preferable because you get closer to a single organization that handles the whole thing for you, and if you scale your site, for example, move it to a faster server, you can also directly replace the DNS statistics so no one notices. To find out who your area is delegated to, you need to do a “whois lookup”. The whois request will now not show you your website, but it will show you which of the DNS servers it recognizes by miles. Anchor customers should normally see ‘ns1.anchor.net.au’ and ‘ns2.anchor.net.au’ in their whois data. If your area is currently with another organization, and you also want to give it to Anchor, you’ll want to expand this data. Generally, this is done through an online web page of the organization with which you registered the area, it is easy to tighten.

Once the extension is established, depending on the shape of the area, it could suck for a few days for the internet to back off and notice that you’ve moved. (Similarly, when you pass by the house, other people may take time to notice.) The reason for this is specified in the next paragraph. Suffice it to say that, for three days, quite a few people will see the new site, but few will see the old site. Some emails will visit the new server completely and some will visit the old server. This can be avoided with careful planning and a long weekly shift.

Slogans and obsessive words, subtitled!

Almost always when talking about DNS the words (and acronyms), appear “”TTL”””””””””””””””””””””, but what do they mean? It has a record with all the data about your zone in it, and while some of the other DNS-like data is related to your zone, the miles are pulled from that record, along with a TTL cost. The external DNS server must store this data locally, without asking if it has changed (the action is called caching). When you re-delegate your zone from one DNS server to another server, the amount of time it takes depends on the TTL cost within the old server. high, which is usually (more than 1 day), any DNS server that requests information about your region within 24 hours will see the above statistics; after the TTL expires, the servers will see the brand new information.