Abstract: At a managed control plane service, end-user application programming interfaces (APIs) of an application to be implemented at a provider network are determined. A set of common operational requirements of the application, to be fulfilled without obtaining program code for the requirements, are identified. In response to an invocation of an end-user API of the application, computations are performed at a resource selected by the managed control plane service, and one or more tasks to satisfy a common operational requirement are initiated by the managed control plane service.

Abstract: A lockable nut system for use with threaded steel bar which includes a screw threaded nut for engagement with the threaded steel bar and a locking member which is slidably engageable with the bar. The locking member is adapted to resist rotation about the bar and is also axially engageable with the nut to prevent rotation of the nut. The locking member has one or more fingers to engage the nut with an end of the finger being displaced to engage the nut as a result of deformation of a finger actuating tab or a dished body of the locking member. The locking member may engage the bar by displacement of an end of at least one tongue as a result of deformation of a tongue actuating tab during compression between the nut and a second structure.