Using Redis with Node.js can provide efficient and scalable data storage for your applications. One common use case is retrieving all hash keys stored within a specific hash. This is useful when you need to examine or manipulate all entries of a hash.
To fetch all keys in a hash, you'll want to use the HKEYS
command. Here's an example using the node_redis
package:
const redis = require('redis'); const client = redis.createClient(); client.hkeys('hashKey', function(err, keys) { if (err) throw err; console.log(keys); // Will log array of keys });
In this example, 'hashKey' is the key of the hash you want to retrieve all keys from. The callback function will be called with an error (or null) and an array of keys.
hkeys
command.Q: Can I get all keys and values at the same time?
A: Yes. For this, you can use the HGETALL
command instead of HKEYS
. This will return an object with key-value pairs.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.