According to the LRU priority, the `lru list` is split into `lru normal list` and `lru durable list`, and the two lists are traversed in sequence during LRU evict, avoiding invalid cycles.
According to the LRU priority, the `lru list` is split into `lru normal list` and `lru durable list`, and the two lists are traversed in sequence during LRU evict, avoiding invalid cycles.