Dynamic switching method for Web isomeric redundant system

The invention discloses a dynamic switching method for Web isomeric redundant system. A dynamic switching mechanism, isomeric degree calculation and switching cost calculation are included, wherein the dynamic switching mechanism triggers the system to perform switching by means of a log audit result, and the switching mode includes horizontal switching and perpendicular switching; when the calculated isomeric degree is used for performing switching of the system, the isomeric degree of an executor set to be switched is evaluated so as to screen out the executor set to be switched; the calculated switching cost is used for evaluating the cost during system execution switching so as to screen out the executor set to be switched. The dynamic switching mechanism is introduced for static web isomeric redundancy, the exposure time of a specific executor within the unit time can be shortened, and the system structural information uncertainty is improved. The attack face exposed by the systemcan be effectively trans