public synchronized V get(K key) {
        V val = cache.get(key);
        if (val == null) {
            stats.markMiss(cacheName);
        } else {
            stats.markHit(cacheName);
        }
        return val;
    }
An asynchronous LRU cache that supports asynchronous value computation.

@param <K> key type
@param <V> value type, NOTE: V must not override equals and hashCode
s3stream/src/main/java/com/automq/stream/s3/cache/AsyncLRUCache.java