US Patent 11128699 Predictive load balancer capacity scaling

Techniques are described for scaling resources used by a load balancer service responsive to capacity changes associated with a target group of virtualized computing resources to which the load balancer service distributes application traffic. A load balancer service of a service provider network obtains a resource scaling indication indicating a change in a number of virtualized computing resources in a target group of virtualized computing resources associated with a user of the provider network. The load balancer service determines, based at least in part on the resource scaling indication, a scaling factor indicating a relative increase of the number of the number of virtualized computing resources in the target group. Based on the scaling factor, the load balancer service scales a respective amount of provider network resources available for use by each component of a plurality of components of the load balancer service.