Everything you need to know about Tech

Category: Network

Round Robin DNS: How does it work?

There’s a common goal all online business people and web managers share: reaching as much traffic as possible. But sometimes, while pursuing this objective, people forget a key next step. You have to be prepared to handle big traffic loads. Otherwise, your current system can be easily saturated and crashed.

Does it sound hard? Well, there are different technologies and strategies you can use. Today, we will talk about Round Robin DNS.

Round Robin DNS: Definition

Round Robin DNS is a DNS solution to distribute the traffic among different servers. It allows the redirection of traffic to other servers to prevent stress points and overloads for your servers. If you are familiar with the concept of load balancing, well, this is one option to do it.

Round Robin DNS: How does it work?

To distribute the traffic, Round Robin DNS works by following the principle of rotation. It also considers the moment a user query is gotten and the number of available servers you have. Briefly talking, it creates a queue of servers, so every time a DNS query arrives, Round Robin DNS gives the IP address of the next server in the queue to serve the query.

Let’s go into detail. Deploying Round Robin DNS, you will have several or many A or AAAA records with different IP addresses. Every IP address will be linked to a specific server containing a copy of your content. Users wanting to visit your service (web hosting or another) will send a DNS query through their browser. This last will trigger the DNS resolution process, and the authoritative nameserver in charge of the A or AAAA records will give the next record (A or AAAA), based on the order of the queue and respecting the order in which the DNS queries were received. This is how the principle of rotation is used.

When every IP address finishes its task, it will get back to the queue, taking place exactly behind the IP address that arrived before it.


In case you have 3 servers, the first user’s query will be directed to server 1. The second user’s query is to server 2. The third user’s query is to server 3. Then, the fourth user’s query will go to server 1, the fifth user’s query to server 2, and so on.

Using it, this cycle it creates will involve the authoritative nameserver and other servers that host your content, meaning your website, service, or application. The more available servers you have, the more IP addresses working for the same domain.

This is an option to manage traffic efficiently, so your network does not get saturated. As a result, the general performance of your business gets enhanced, too and visitors enjoy a better experience. Not bad at all, right?


As you see, Round Robin DNS is a very convenient load balancing solution, easy to install, and based on a simple but effective principle that can make a big difference for your domain. Managing traffic can be easier than you thought!

IPv4 explained for beginners

IPv4 – Explanation

The fourth version of the Internet Protocol, or IPv4, is a popular protocol for exchanging data over various networks. Internet Protocol version 4 is a connectionless protocol that operates in packet-switched layer networks like Ethernet. Instead, it gives each network device a special identifier to create a logical connection between them. There are both manual and automatic configurations for configuring IP version 4 with various devices, depending on the type of network.

What does IPv4’s future hold?

The digital industry has advanced significantly since the introduction of IPv4 in the 1980s. Additionally, the number of people utilizing one or more gadgets has significantly expanded. There are approximately 8 billion individuals in the modern world, yet IPv4 and its 32-bit addresses can accommodate only a little more than 4 billion.

Thus, the issue is now apparent. Network managers are forced to reuse IP addresses since there aren’t enough of them available. They must also properly manage and maintain their IP address pool.

Their cost rises as a result of the scarcity of IPv4 addresses. Therefore, the newest IPv6 version is becoming increasingly popular, primarily because of this.

How can you check the IPv4?

Your IP address can be easily found. An IP address that regularly changes is said to be dynamic. You can find out your computer’s IP address by doing the procedures listed below:


Enter cmd in the Start menu of Windows to open the Command Prompt. Next, enter the command ipconfig into the Command Prompt. Your IP address will be among the information provided by the program.


Launch the Terminal application. Utilize the macOS Terminal command curl to obtain your public IP address. To discover the private Internet Protocol version 4 address, use ipconfig getifaddr en0.


Open a terminal window to get start. You can use the three commands “hostname -I,” “ip addr,” and “ifconfig” to verify Internet Protocol version 4. These commands all produce the IPv4 address as a result.


Because there are fewer numbers in constructing IPv4 addresses, they are more straightforward. On the other hand, the format of the new IPv6 version is more complex. This is crucial when it comes to physical labor. Human error is substantially less likely with IPv4.

A substantially wider range of compatibility is available with Internet Protocol version 4. This version of Internet Protocol works flawlessly on both outdated and contemporary computers. On the other hand, the vast majority of current technology gadgets do not support IP address version 6.


We might conclude that IPv4 made up the majority of the current Internet traffic because it was the first Internet Protocol version to receive widespread adoption. Maybe IPv6 stands for the present and IPv4 for the past. We’ll begin formally greeting the new one and gradually bidding the old one farewell.