Why You Need a Global Load Balancer?

Why You Need a Global Load Balancer?

Today’s application — whether it is a mobile application, a web app, desktop app, a software-as-a-service (SaaS) platform or another platform that interacts with a server — really demands a load balancer. Load balancers use algorithms to identify clusters of server requests, which have the ability to interfere with performance and negatively impact user experience. Then, the load balancer works as a reverse proxy of sorts, distributing the traffic to multiple servers which are commonly located in different geographic regions. Usually, the traffic is diverted to the closest possible server with the highest availability.

Load balancing technology comes in many forms and there are multiple load balancing techniques to choose from. One of the many options involves global server load balancing. GSLB represents one of the most in-demand options. But why would you need a global load balancer? And who is best suited to this technology?

What is a Global Load Balancer?

Global server load balancing — also known as GSLB — involves a network of servers that are situated in various locations across the planet. This wide geographic distribution of servers delivers exceptional reliability and stability because the network as a whole is more or less impervious to downtime. It is unlikely that any single event could successfully take out all of the network’s servers if they are located on opposite sides of the globe. As a result, you can expect that there will virtually always be servers available to process traffic in the case of a global server load balancer. This translates into best-in-class reliability and stability.

Global load balancing is suitable for many types of applications, with consistent and reliable performance that is difficult for other load balancers to match. There is also a very healthy ROI associated with GSLB due to the positive user experiences that this technology can bring.

Global load balancing can be performed in on-premise data centers or in a public or private cloud environment. Often, these load balancers use DNS load balancing methods, although it is also possible to run a GSLB operation on a dedicated network that is integrated into an application delivery controller (ADC). The DNS load balancers are generally preferred over the “older” configuration involving an ADC.

Why Does a Company Need a Global Load Balancer?

If you are wondering why your organization needs a global load balancer, you are in good company because this is one of the most frequently-considered load balancing options. Here are a few reasons why you may need a global load balancer for your technology.

  • Reliability – Global load balancers are very, very reliable because — as mentioned above — it is very unlikely that servers in multiple geographic regions would be affected by a single catastrophe. As such, you can rest easy knowing that there will always be servers available to handle traffic. Chances of noticeable slowdowns that adversely affect user experience are quite low, making GSLB a good choice for applications that demand a positive UX.
  • Stability – Global load balancers are renowned for their stability. Again, this is rooted in the wide geographic spread of the servers, which makes them essentially impervious to disruptions from weather events, social conflict and natural disasters and other events that can potentially impact data centers and the servers that are housed within.
  • Scalability – Global load balancers are highly scalable. This is true of many load balancing solutions, but global server load balancers allow for scaling at a worldwide level. Remember, the closer the server, the faster speeds you can achieve. As a result, you will enjoy zippy performance for users, regardless of whether a user is situated nearby in the next city over or in a distant far off location. The ability to grow and scale your offerings while also offering strong performance is rather exclusive to GSLB.
  • Affordability – Global load balancing is surprisingly affordable as many service providers now leverage cloud technology. Cloud-based solutions bring many benefits, such as unmatched security, a high degree of scalability, and high server availability. A load balancer that is beyond your price range will bring no benefits since the technology stands beyond your financial reach. You need a load balancer that is within your budget and there is a good chance that a GSLB will fit that criteria.
  • Mission-Critical Applications – Global load balancers are perfect for organizations that simply cannot experience downtime because high traffic volume has slowed things to a crawl. As mentioned above, the worldwide distribution of servers has made GSLB an ideal option for those who demand reliable, consistent server performance.
  • Recovery Capabilities – The GSLB is an ideal choice for organizations that require disaster recovery capabilities. The broad server distribution is conducive to active-passive recovery strategies. In this scenario, data is transferred to an active platform and then, that data is gradually copied to passive recovery sites that remain in standby mode of sorts. The global server is ready to jump into action if a major crash or other catastrophic event occurs, leading to uninterrupted service.

Additionally, many companies will favor global server load balancers because they can be architected in a manner that ensures full compliance with a variety of different government regulations. The most commonly-affected business sectors include the health care field, the financial sector, the defense industry, and the telecom industry.

There are no one-size-fits-all load balancer, but if one comes close to meeting that burden, it is probably the global load balancer. GSLB is a great option — perhaps even the best option — for a large portion of businesses.

If you need help choosing a load balancing solution, the team at Resonate is available to assist with your search. We specialize in the development of innovative, high-tech load balancers and this includes global server load balancing technology. We know better than most others how a well-crafted load balancer algorithm has the power to transform user experience and boost performance for the platforms that rely upon your technology. Reach out to Resonate today to discuss your load balancing options.