Horizontal Scaling, also known as scaling out, is a method of adding more machines or nodes to a system to increase capacity. In cloud computing, this means adding more instances to handle increased load, which can often be done automatically using auto-scaling features.
Horizontal Scaling works by distributing the load evenly across multiple servers, reducing the strain on any single server and increasing the redundancy and availability of the application.
An online retailer experiences a significant increase in traffic during a holiday sale. To handle the increased load, the retailer uses horizontal scaling to add more servers to its e-commerce platform. This allows the platform to handle the increased traffic, ensuring a smooth shopping experience for customers, even during peak times.
The ability of a system to handle increased load by adding more resources or making better use of existing resources.
The process of automatically adjusting the amount of computational resources based on the actual demand.