In Node.js applications, we often need to get multiple keys from a Redis store at once. This can be accomplished using the
mget command, which stands for 'Multi Get'. It allows you to retrieve the values of all specified keys.
This example shows how you can use
mget to fetch the values of multiple keys ('key1', 'key2', 'key3') at once.
In this example, we're wrapping the
mget call with Node's built-in
promisify utility, allowing us to work with Promises instead of callbacks.
nullvalues for those keys, which may not be the expected behavior in your application.
Can I use wildcard characters with mget?
No. The Redis
mget command does not support wildcards. If you need to get all keys matching a pattern, you need to first use the
keys command to get the keys and then use
What happens if some of the keys do not exist?
If some of the keys don't exist, Redis will return
null for those keys.