Abstract: A technique relates to resource allocation of a countable managed resource. A computer sets a reserved amount of the managed resource to be available for a privileged status, such that there is an unreserved amount of the managed resource to be available for a non-privileged status. In response to a non-privileged job needing more of the unreserved amount of the managed resource than what is available, it is determined whether the non-privileged job is promotable to the privileged status. In response to the non-privileged job not being promotable to the privileged status, the non-privileged job is prevented from accessing the reserved amount of the managed resource. In response to the non-privileged job being promotable to the privileged status, the non-privileged job is permitted to utilize the reserved amount of the managed resource.

Abstract: A technique relates to resource allocation of a countable managed resource. A computer sets a reserved amount of the managed resource to be available for a privileged status, such that there is an unreserved amount of the managed resource to be available for a non-privileged status. In response to a non-privileged job needing more of the unreserved amount of the managed resource than what is available, it is determined whether the non-privileged job is promotable to the privileged status. In response to the non-privileged job not being promotable to the privileged status, the non-privileged job is prevented from accessing the reserved amount of the managed resource. In response to the non-privileged job being promotable to the privileged status, the non-privileged job is permitted to utilize the reserved amount of the managed resource.

Abstract: A technique relates to resource allocation of a countable managed resource. A computer sets a reserved amount of the managed resource to be available for a privileged status, such that there is an unreserved amount of the managed resource to be available for a non-privileged status. In response to a non-privileged job needing more of the unreserved amount of the managed resource than what is available, it is determined whether the non-privileged job is promotable to the privileged status. In response to the non-privileged job not being promotable to the privileged status, the non-privileged job is prevented from accessing the reserved amount of the managed resource. In response to the non-privileged job being promotable to the privileged status, the non-privileged job is permitted to utilize the reserved amount of the managed resource.

Abstract: A technique relates to resource allocation of a countable managed resource. A computer sets a reserved amount of the managed resource to be available for a privileged status, such that there is an unreserved amount of the managed resource to be available for a non-privileged status. In response to a non-privileged job needing more of the unreserved amount of the managed resource than what is available, it is determined whether the non-privileged job is promotable to the privileged status. In response to the non-privileged job not being promotable to the privileged status, the non-privileged job is prevented from accessing the reserved amount of the managed resource. In response to the non-privileged job being promotable to the privileged status, the non-privileged job is permitted to utilize the reserved amount of the managed resource.

Abstract: A networked computer system provides a way to quickly switch to a backup data center when a primary data center fails. Each data center includes a redirect table that specifies a geographical area corresponding to each user. The redirect table is replicated on one or more data centers so that each data center has the same information. When a data center fails, the redirect table in one of the non-failed data centers is updated to specify a new data center for each client that used the failed data center as its primary data center. A network dispatcher recognizes that the failed data center is unavailable, and routes a request to the backup data center. Network routing logic then issues a redirection command that causes all subsequent requests from that client to be redirected directly to the backup data center.