@Override
    public void maybeLoadPartition(TopicIdPartition partition) {
        idToRemoteLogMetadataCache.computeIfAbsent(partition, idPartition -> new RemoteLogMetadataCache());
    }
This class represents a store to maintain the {@link RemotePartitionDeleteMetadata} and {@link RemoteLogMetadataCache} for each topic partition.
storage/src/main/java/org/apache/kafka/server/log/remote/metadata/storage/RemotePartitionMetadataStore.java