That means a single domain can have more than one IP address. To address this issue, DNS information is shared among many servers.
For example, imagine if all of the requests coming in at the same time all over the world to resolve the domain name Google with the underlying IP address were being handled in a single location.
Like the internet itself, the directory is distributed around the world on domain name servers that communicate with each other on a regular basis to provide updates and eliminate redundancies.Īnother reason for the creation of a distributed system is to boost performance. There are currently more than 342 million registered domains, so keeping all those names in a single directory would be cumbersome.
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