What is load balancing methods?
Load balancing methods are algorithms or mechanisms that are used to efficiently distribute an incoming server request or traffic between servers in the server pool. Efficient load balancing is necessary to ensure the high availability of web services and the provision of such services quickly and reliably. In order to meet a high traffic demand, servers are replicated. An incoming load or request to a server is shared on such replicated servers. This process is known as load balancing. In order to optimally plan the routing of requests from a client to the respective servers, several load balancing methods such as round robin, least connections, adaptive balancing etc. are used.
Load balancing methods are also known as load balancing or scheduling algorithms because they specify the way in which a server load is distributed across a server pool. There are several load balancing methods available, and each method uses a specific criterion to plan for inbound traffic. Some of the common load balancing methods are as follows:
Round Robin - In this method, an incoming request is forwarded to each available server in turn.
Weighted Round-Robin - Here a static weight is assigned to each server and used with the round-robin method to route an incoming request.
Least connection - This method reduces the congestion on a server by assigning an incoming request to a server with the fewest number of connections currently running.
Weightest Connection - This method adds a weight to a server based on its capacity. This weight is used with the lightest connection method to determine the load assigned to each server.
Lowest Start Time for Minimum Connection - This sets a startup time for a server with the least connection schedule to ensure that the server is not overloaded when it starts.
Agent-based adaptive balancing - This is an adaptive method that regularly checks a server, regardless of its weight, in order to plan traffic in real time.
Fixed Weighted - This method pre-assigns the weight of each server and routes most requests to the server with the highest priority. If the server with the highest priority fails, the server with the second highest priority takes over the services.
Weighted Response - This is where the response time from each server is used to calculate its weight.
Source IP Hash - This method uses an IP hash to find the server that needs to handle a request.
Each method has its own advantages and suitable scenarios. The optimal algorithm that best suits the purpose can be selected by the service provider in order to provide smooth, reliable and fast service delivery to its customers.