HVALS command is used to retrieve all the values in a hash stored at a specific key. Typical use cases in Golang include:
Here's an example using the popular Redigo Redis client for Go:
This code first sets some fields in a hash with the
HSET command. Then it retrieves all the values in that hash and prints them.
conn.Do()function to execute Redis commands. This can help identify issues like connectivity problems or incorrect command usage.
HVALSis run against a non-existent key, it will just return an empty list. You should be prepared for this scenario in your application logic.
HVALSis consistent. While it may appear that way, Redis does not guarantee any specific order for the returned data.
Q: What happens if the key exists but is not a Hash type?
A: If you try to use
HVALS on a key holding a non-hash type, Redis will return an error.
Q: Does HVALS mutate the state of the Redis database in any way?
HVALS is a read-only command and doesn't affect the state of the Redis database.
Q: Can I use patterns or wildcards with HVALS?
HVALS works with a single, specific key. You cannot use patterns or wildcards.