1. A method of implementing a policy dealing with resource failure in a computer network, comprising the steps performed by a data processing system of: receiving a failure event corresponding to a failure of a first network resource; determining a second network resource that has a dependency relationship with the first network resource; if the dependency relationship between the first and the second network resource is a relaxed dependency relationship, performing actions determined by a plurality of relaxation rules for the first and second network resources; and perform actions determined by a plurality of event handler rules for the failure event.