Load balancing is a technique used to distribute load on server to increase performance and speed of work designated to particular server. There are various techniques that can be used to accomplish load balancing task with the help of different types of computer hardware and software components.
Application of load balancing is used by different companies that conduct huge business transactions using internet. It is normally done to ensure that all their clients are able to conduct business activities with ease and accuracy.
Even companies who are maintaining large number of computer network for single user use load balancing to ensure that each computer is performing well and has the correct amount of power to be able to perform functions that are intended for particular work. Benefit of load balancing is, if one of your server goes off then you have other the option of alternate server to work upon.
Load balancing improves the performance of server due to distributed load and is used for busy and large networks .Without balancing load in busy networks it is very difficult to satisfy the entire request issued to server. Organization into the web services or online business normally makes use of load balancing technique and engages two web servers ( or more servers accordingly ) . If one of the web server gets overloaded or goes off, in that case alternate server activates and access the requested load.
Load balancing is done by assigning particular service time for each process in order to ensure that several requests are handled without causing traffic. In other words, specific time is assigned to each process in the server for its execution and the process no more stay in the server once service time extends. Once load balancer works actively, service time reduces for each process reduces.
Lets discuss various techniques widely used for load balancing. The most popular technique is global server load balancing .This method distributes the work load of incoming tasks to group of servers in particular location. Such technique is used by companies that have global presence and are very much customer oriented.
Global server balancing technique ensures that the work load is evenly distributed throughout server system and all locations are receiving correct data from right set of server. Congestion and huge volume of traffic is always a problem in large network systems due to excessive load on the system . Technique of persistent load balancing can drastically help to minimize congestion on large network.
Another load balancing technique is Persistent load balancing technique. This load balancing technique does not make any use of software or hardware node and the customer is allowed to select their respective server and get services from that server. This process is very transparent and useful from client point of view as it discloses the presence of multiple servers at the backend . This technique assigns each new client with different set of server on a round robin allocation basis. This process of load balancing ensures that each new client is assigned with specific server and no server is overloaded with particular client.