System and method for facilitating dynamic policy engine with recursive key selection

One embodiment provides a system and method for facilitating a dynamic policy engine with recursive key selection. During operation, the system may receive, at a network device, a user request to create a policy table, the user request including a plurality of sets of policy fields and specifying an amount of hardware resources for the policy table. The system may release a portion of the allocated hardware resources and allocate a specified amount of hardware resources for the policy table in response to determining that the amount of unallocated hardware resources is less than the amount of hardware resources specified in the user request. The system may identify an optimized matching policy template that accommodates multiple sets of policy fields based on a user request. Thereafter, the system may configure one or more hardware template registers and create a policy table based on the optimized matching policy template. 一个实施例提供一种用于促进具有递归键选择的动态策略引擎的系统和方法。在操作期间，该系统可以在网络设备处接收用于创建策略表的用户请求，该用户请求包括多组策略字段并且指定用于该