Versatile autoscaling for containers

A computer-implemented method, comprising:

• obtaining a policy associated with a notification;
• submitting, to a service, a first request for a first current capacity of a resource;
• calculating, based at least in part on the policy and the first current capacity, an amount by which to adjust a capacity of the resource;
• submitting, to the service, a second request to adjust the capacity of the resource by the amount;
• submitting, to the service, a third request for a second current capacity of the resource;
• receiving the second current capacity from the service;
• and
• determining, based at least in part on a comparison between the second current capacity and the amount, whether the second request has been fulfilled.

A non-transitory computer-readable storage medium storing executable instructions that, as a result of execution by one or more processors of a computer system, cause the computer system to at least:

• register, at a first service, a dimension of a resource of a second service as a target;
• in response to receipt of a notification associated with a policy, obtain the policy, the policy including a set of parameters that indicates a modifying action to apply to the target;
• determine, based at least in part on the policy, that performance of the modifying action is authorized;
• submit a request to the second service to perform the modifying action against the target;
• submit a second request to the second service to obtain information indicating whether the target has been modified in accordance with the policy;
• and
• provide, based at least in part on the information, output that indicates whether the request has been fulfilled.