The invention relates to a cache updating method,
system and device. The method comprises the following steps: a synchronous
cache server receives hot cache feature information and
ip address information of two adjacent periods sent by each edge
cache server, and the hot cache feature information is used as cache feature information by the edge
cache server periodically acquiring cache hit times and latest cache hit time requested by a user; the method comprises the following steps of: acquiring
IP address information and hot cache feature information, correspondingly storing each piece of cache feature information into an edge lru
linked list, performing edge lru sequencing determination according to each piece of cache feature information, generating a corresponding report feature
list and acquiring incremental cache hit times based on each piece of
ip address information and hot cache feature information, and sending the report feature
list and the incremental cache hit times to a parent layer cache
server. And the parent layer cache
server updates the parent layer lru sequence of each cache according to the reported feature table and the incremental cache hit times, and finally updates the cache stored in the parent layer lru
linked list based on the updated parent layer lru sequence. According to the method, the cache updating efficiency can be improved.