Question

I have just discovered how cool node js is and was looking at options for persisting. I saw that you could use redis-client to store data in redis and I have been able to store data ok, like so:

var redis = require('redis-client');

var r = redis.createClient();

var messege = {'name' => 'John Smith'};

var type = "Contact";

r.stream.on( 'connect', function() {
  r.incr( 'id' , function( err, id ) {
    r.set( type+':'+id, JSON.stringify(messege), function() {
      sys.puts("Saved to redis");
    });
  });
});

This store a key with a json string as the value. I am however trying to retrieve all the keys from redis and loop around them. I am having trouble figuring out the way to do this, could anyone point me in the right direction?

Cheers

Eef

Answer 1

To get keys from redis, you should use the .keys parameter. The first parameter that you pass is a ‘filter’ and .keys will return any items matching the filter.

For example r.keys('*', ...) will return all of the keys in redis as an array.

Here’s the documentation on this command: http://redis.io/commands/keys

To loop through them, you can just do a simple for in as follows:
r.keys('*', function (keys) {
for (key in keys) {
console.log(key);
}
});