Method for fast searching, positioning and matching access control list
An access control list, fast technology, applied in the field of computer communication, can solve problems such as not supporting fast matching well, achieve fast search, positioning and matching access control list, high efficiency, and reduce product cost
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[0020] According to the hash principle, there are three ways to avoid hash conflicts: first, make the bucket capacity of the hash table much larger than the actual entries that need to be accommodated; second, maintain a linked list for the hash table to save all conflicting entries; Third, design a hash function that can correspond one-to-one. Usually for the above method 1, we choose the parameters in this way, if the key value space of the hash table is K, and the value space of the actual key value is A ( A ⊆ K ) , The bucket size space of the hash table is T, then the hash should satisfy the relationship of |A|<c|T|, and c represents the scaling factor. In practical applications, take the proportional factor c to satisfy the relationship 1 / 2<c<3 / 4 and try to make the bucket size T of the hash table a prime value, so that the hash table can be evenly distributed, and hash table c...
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