US Patent 12028210 Production software application performance and resiliency testing

Methods, computer program products, and systems are presented. The method computer program products, and systems can include, for instance: marking of a request to define a marked request that includes associated metadata, wherein the metadata specifies action for performing by a resource interface associated to a production environment resource of a production environment, wherein the resource interface is configured for emulating functionality of the production environment resource; and sending the marked request to the resource interface for performance of the action specified by the metadata.