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Node Redis: Get List of Commands (Detailed Guide w/ Code Examples)

Use Case(s)

The use cases for getting a list of commands in Node.js with Redis include debugging, developing an interactive client interface, or building a Redis command interface within your application. It's useful when you want to know which commands the Redis server supports or to verify whether a particular command is available.

Code Examples

  1. Using the 'COMMAND' command:
const redis = require('redis'); const client = redis.createClient(); client.on('connect', () => { client.command((err, res) => { if(err) throw err; console.log(res); }); });

In this example, we first import the redis module and create a new client. The 'command' function gets the list of all Redis commands from the server and logs them to the console.

  1. Using the 'send_command' method:
const redis = require('redis'); const client = redis.createClient(); client.on('connect', () => { client.send_command('COMMAND', [], (err, res) => { if(err) throw err; console.log(res); }); });

This example does the same thing but uses the 'send_command' method, passing 'COMMAND' as the name of the Redis command to be sent.

Best Practices

  • Always handle errors in your callbacks to prevent crashes due to uncaught exceptions.
  • Avoid frequently querying for the list of commands in a production environment as it could have performance implications.

Common Mistakes

  • Not checking for the successful connection to the Redis server before executing commands. Always ensure the client is connected before trying to interact with the server.


  1. Can I use these methods to get command details in languages other than Node.js?

Yes, the 'COMMAND' command is a standard Redis command and can be used from any language with a Redis client.

  1. What does the 'COMMAND' command return?

The 'COMMAND' command returns an array of arrays, where each subarray represents a command and contains the command name and other information such as the number of arguments it takes.

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Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.