Description: Layer 4 load balancing is a method that distributes network traffic across multiple servers using information from the transport layer of the OSI model, such as port numbers and IP addresses. Unlike layer 7 load balancing, which operates at the application level and can make decisions based on the content of requests, layer 4 load balancing focuses on the network connection and is more efficient in terms of performance. This type of load balancing is ideal for applications that require high availability and scalability, as it can manage large volumes of traffic without compromising speed. Additionally, it can handle different transport protocols, such as TCP and UDP, making it versatile for various applications. Implementing layer 4 load balancing can enhance service resilience, as if one server fails, traffic is automatically redirected to other available servers, thus ensuring a continuous and uninterrupted user experience.
