I want to implement a tag cloud.
Tag information is stored in Redis:

redisTemplate.opsForValue().set(tagKey, tagName);

The usage count of the tags is also stored in Redis, using a sorted set:

redisTemplate.opsForZSet().incrementScore(TAG_CLOUD_KEY, tagKey, 1);

My question is that when showing the tag cloud, I want to show the tagName. However, when retrieving the tag usage count via TAG_CLOUD_KEY, I can only get the tagKey. How can I match tagKeys with ralative tagNames, how can I design the storage structure in Redis to meet this requirement?

I don’t want to loop through all the tag keys to get the tagName via the tagKey, as this seems very inefficient. What is the best practice in Redis for such key-name matching problem?