Hardware load balancer or a network load balancer is an appliance device that is used for splitting the network load across multiple servers. The main reasons for using a load balancer are i. to increase the capacity of your system; ii. to present better performance with increasing concurrency and iii. to provide resilience to your system. Application delivery controller is again a device that is generally placed between the firewall and one or more application servers in a data center for accelerating the function of the application and also for load balancing between servers. So, both of these essentially work toward one simplified goal: to offer better customer experience.
An application delivery controller is a typical network device for managing client connections in a intricate web and business service-related applications environment. It can be either a software program or a hardware device that directs the flow of data between two devices. So, it also works as a hardware load balancer and optimizes the performance for the end-user. If you want to implement reliable usage of your resources and at the same time wish to ensure security for the applications you must have one of these. Companies can now have appropriate networking technologies by choosing an appropriate application delivery controller and server load balancing products at a nominal cost.
An ADC or application delivery controller is strategically placed before servers for applications and also behind a firewall for assessing security needs. Just like Flood Control, it limits or stops unwanted or undesired IP network traffic to your system. Therefore, it serves three purposes: authorization authentication and accounting. With hardware load balancer you can speed up the functioning of your system. It improves the delivery of applications over WAN with the help of techniques like reverse caching and compression.
New users’ requests that are coming from websites, both static and dynamic, can be managed with reverse caching of application delivery controller. This is sent from a cache instead of involving the servers . This keeps the servers free for catering to more requests at the same time. In virtual data centers and now more so for cloud computing hardware load balancer offers the scalability depending on the change in demand volumes. For accelerated functions of applications and more options of availability, you should have load balancer. As cloud computing is going to be adopted more and more, the requirements for load balancer would go up.
Today’s businesses are going through a new age IT evolution. For a business to succeed some factors are becoming more important that were not considered some years back. For example, website reliability or scalability structures that can be flexible were never discussed earlier. And, these are important for all businesses, irrespective of their sizes. There are vendors who have readied themselves to support businesses with hardware load balancer and application delivery controller for presenting great performance and ease of management for the website infrastructure. The end users are at a gain as the service quality has improved greatly and the cost has come down for them as well as the businesses.
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With application delivery controller and hardware load balancer you can ensure smooth functioning of your system.
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