DIFFERENTIAL CACHE FOR REPRESENTATIONAL STATE TRANSFER (REST) API

摘要

System and method of differential cache control. Different parts of a representation are controlled by different cache expiration times. A differential control scheme may adopt a hierarchical control structure in which a subordinate level control policy can override its superordinate level control policies. Different parts of the representation can be updated to a cache separately. Differential cache control can be implemented by programming a cache control directive in HTTP/1.1. Respective cache expiration time and their control scopes can be specified in a response header and/or response document provided by a server.

主权项

1. An apparatus comprising:
a transceiver configured to receive a request for a resource representation from a network management application, wherein said resource representation corresponds to a network resource pertaining to network management operations of a software defined network (SDN); and a processor coupled to said transceiver and configured to:
assign a first cache expiration time to a first part of said resource representation based on a change rate of said first part;assign a second cache expiration time to a second part of said resource representation based on a change rate of said second part, wherein said first cache expiration time and said second cache expiration time are different, wherein said first cache expiration time defines a duration that said first part remains fresh and said second cache expiration time defines a duration that said second part remains fresh; andgenerate a response to the network management application, said response comprising: said resource representation and indications that said first cache expiration time is to be applied to said first part of said resource representation, and that said second cache expiration time is to be applied to said second part of said resource representation.