Using redis and node.js issue: why does redis.get return false?

Question

I'm running a simple web app backed by node.js, and I'm trying to use redis to store some key-value pairs. All I do is run "node index.js" on the command line, and here's the first few lines of my index.js:

var app = require('express').createServer();
var io = require('socket.io').listen(app);

var redis = require('redis');
var redis_client = redis.createClient();
redis_client.set("hello", "world");
console.log(redis_client.get("hello"));

However, all I get for redis_client.get("hello") instead of "world" is false. Why is it not returning "world"?

(And I am running the redis-server)

What's weird too is that the example code posted here runs fine, and produces the expected output. Is there something I'm doing incorrectly for simple set and get?

Answer 1

i could bet get is asynchronous, so you would get the value by callback.

Edit:
It's really asynchronous: file.js

Answer 2

Here you go! For ES6

redis_client.get("hello", (err, data)=>{
  if(err){
    throw err;
  }
  console.log(data);
});

For ES5

redis_client.get("hello", function(err, data){
  if(err){
    throw err;
  }
  console.log(data);
});

Answer 3

This might help someone who hates using callbacks:

Just promisify it without having to use external library by doing something like:

new Promise((resolve, reject) => {
  redis_client.get("hello", (e, data) => {
    if(e){
      reject(e);
    }
    resolve(data);
  });
});