Explanation of Anycast DNS
Anycast DNS is a type of communication or routing technology that enables rapid data transmission and reception. Using this technique, a single IP address can be typed into several DNS servers worldwide. Any of them is capable of responding to the request. The intended outcome is for the server physically closest to the user to respond. The response time is sped up dramatically as a result.
How does it interact?
When a device connects to the Internet, it uses its IP address to communicate with a server. One-to-one communication is the most fundamental form of communication. This is sufficient, and DNS resolution may be possible. However, specific requests will have to travel long distances to reach a server that only has the required data (A or AAAA record) and is located far away. The user will not receive the intended response if the server is unavailable. The query won’t get an answer.
What are Anycast DNS benefits?
There are various benefits, some of which are:
- It just requires one server to be configured, making setup simple. Furthermore, the entire network can be affected by such alterations.
- It has improved response time. The response time is improved by directing to the closest reachable DNS server.
- Using Anycast, you can increase DNS dependability by setting up several servers with the same IP address throughout various locations. The DNS servers’ redundancy makes the service more dependable and highly available.
- Protection from DDoS attacks. In the event of a DDoS attack, only a subset of the Anycast DNS group of servers will be affected.
- Anycast load balancing automatically distributes queries among DNS servers, especially if all routes are equally expensive.
What would happen if I did not have Anycast DNS?
If you don’t utilize Anycast DNS, the operation will take longer. You likely use unicast routing if you don’t use the Anycast Domain Name System. The way that Anycast and Unicast work is different. Unicast will be used to send the query to a single server as opposed to several. If the resolver is down or not responding at the time of the request, the client will need to find a different solution by sending queries to other DNS resolvers, affecting the time and performance.
Will Anycast DNS be useful to my website?
Nobody in the Internet enjoys websites loading slowly or displaying “denial of service” notifications. How close a server hosting your DNS records is to visitors directly affects how quickly they may access your website. Any website that uses global queries will profit from Anycast.
In general, Anycast DNS is a technique for localizing traffic. As a result, you can offer your customers prompt and dependable service by routing them to the closest server. Additionally, it is straightforward to set up and will enhance your networking.