caching - What algorithms do DNS servers use for faster lookups? -

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DNS servers should be fast to avoid latency Whether algorithms use DNS servers to reduce latency? Are there any caching mechanisms that can be used effectively to improve the speed?

There is a big problem with latency DNS. The slowest part of the DNS is reaching out to the 'net' and inquiries from other servers. Any A customer or server will speed up the caching process. In fact, what exactly is this?

When a DNS server responds to a query, the answer comes back to TTL (time-to-live). The TTL value tells the querying server how much time to cache the response. The TTL value zone is set by the official server. Usually this is about a day, but depending on how many times the admin thinks that the DNS entry can change.

The DNS client (which can act on behalf of an end user from another user) caches the response when it exceeds TTL, it will exit the cache. Until that time, questions from that specific hostname will come out of the cache.

I used to run my own DNS server at home so all my computers could take advantage of local cache on my LAN. But I found out that it is better to use your ISP's DNS servers. They were benefited from the queries of thousands of customers and more likely to give a more cached answer than my server.


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