Load balancing: What does that mean?
DNS Load balancing uses domain settings to distribute client requests around server computers. Any website, email service, or another Internet-based service can be connected to the domain.
You might anticipate receiving a lot of requests if you run a significant and well-known website. It must also respond to queries accurately and quickly, provide up-to-date information, and be quick. Here, the idea of traffic balancing is put into use.
Common Load balancing approaches
There are various methods for balancing traffic. We’ll focus on the two most well-liked ones:
The Geographical Domain Name Mechanism, sometimes known as GeoDNS, is a system for Load balancing traffic. As the name suggests, it is based on user location. For best security and efficiency, traffic is distributed evenly among data centers located in several regions. Assume, for instance, that a user asks the United States of America, more particularly the state of Virginia, for something. The user will be directed to your site’s American version if you use GeoDNS.
This tactic is extremely safe because the likelihood of an assault is spread over several locations. It happens a lot with companies that serve clients from different nations.
2. Round Robin
Round-Robin is the DNS Load balancing solution that controls traffic based on the timing of user requests and the number of servers you have. The idea is simple: you have several A or AAAA records with different IP addresses (IPv4 and IPv6). A copy of your website is hosted on each of these web servers with a separate IP address. Each of them keeps one copy of the data for your website. Therefore, whenever a user requests your domain name, the authoritative name server, where the A or AAAA records are stored, will offer the subsequent A or AAAA records from those you created, in order of rotation. Then, when consumers want to visit your website, a recommendation will be made automatically. The specific sequence depends on the precise time they arrive at your DNS name server.
Does it provide a benefit?
Load balancing has a lot of advantages. It has three very important benefits. The list is as follows:
- The reliability of the system is improved through Load balancing. This is due to traffic being split among numerous DNS servers. It consequently lessens the possibility of being the target of DDoS attacks.
- It boosts your safety and lessens any dangers. Why? It is able to accomplish this so that it can inspect incoming traffic. As a result, it could scan data packets for defects and prevent malicious attempts from interfering with your DNS server. It might assist you in avoiding severe issues, including data breaches, customer phishing attacks, DNS outages, etc.
- Additionally, it quickens the procedure. That is, without a doubt, the case. Your visitor will receive noticeably faster responses if a DNS network of servers connects numerous locations worldwide. It is impossible to exaggerate the value of speed in SEO. As a result, a properly designed DNS balancer can give you a sizable competitive advantage.
Now, you are familiar with what the term Load balancing symbolizes and which are its main approaches (GeoDNS and Round Robin). Therefore, we can conclude that this approach is advantageous if we wish to reduce the likelihood of overloading our domain. Nobody wants their website to be down and their visitors to be unable to access it. You can use Load balancing DNS to stop this from occurring.