HGET command in Redis is used to retrieve the value associated with a specific field from a hash stored at a key. In Golang, you might use this while implementing caching, session management, or any feature where you need to fetch particular data related to an object.
In this example, we connect to a local Redis instance and retrieve a field's value from a hash.
Here, we first set the "name" field for the hash at "user:1000" to be "John Doe". We then use
HGet to retrieve the name field, which prints out "John Doe".
HGet. This will prevent your application from panicking in case the Redis server is not accessible or some other error occurs.
HGetreturns two values - the result and an error. Ignoring the error return value is a common mistake which can lead to unexpected results.
HGetwill return a nil error which can be mistaken for a connection or server problem. Ensure to check if the key or field exists before attempting to use
Q: What happens when the key or field does not exist?
HGET command will return a nil response without an error. This could sometimes be misconstrued as an error in connection or server. Always validate that your keys and fields exist before running the command.