Using a single hash key to store multiple values

index.js

// We want to store all three of these together
var one = 1;
var two = 2;
var three = 3;

// Redis only accepts a single value for a key
// so we must group the values together, we can use an object:
var data = {
  one: one,
  two: two,
  three: three
};

// But we have an object of data, Redis only accepts strings for values
// we can use JSON to turn the object into a string:
var stringData = JSON.stringify(data);

// Now we can store it in the hash key:
client.hset('my-data', 'key-name', data, function(err) {
  if (err) throw err;

  // If we retrieve the value:
  client.hget('my-data', 'key-name', function(err, data) {
    if (err) throw err;

    // Data is actually a string right now, which we can't use easily
    // to grab the one/two/three values, so we parse it:
    var dataObject = JSON.parse(data);
    
    // Now you can log out the individual values:
    console.log(dataObject.one, dataObject.two, dataObject.three);
  });
});