Searching by multiple values within a redis key/value

Question

I was told to use Redis for store authenticated users in my application on Heroku, so I decided to jump in today. What I want to do is store hashes of users in the Redis store like this:

{
   id:4532143215432,
   username:'davejlong',
   email:'[email protected]'
}

And then I want to be able to search by either username or id. Is this possible with Redis somehow?

I am using the node.js redis module which supports any redis command https://github.com/mranney/node_redis

Answer 1

There are few problems in @orangeoctopus usecae.

redis 127.0.0.1:6379> HMSET id:4532143215432 username davejlong [email protected] OK redis 127.0.0.1:6379> HMSET user:davejlong id 4532143215432 email [email protected] OK

This will make duplication, think about adding new values and deleting & updating.

So I prefer this

SET user:davejlong 1
HMSET user:1 username davejlong email [email protected] 

1) In case of username

 redis.get('user:davejlong',function(err,id){
     console.log('User Id of @davejlong: ' + id);
     redis.hgetall('user:'+id,function(err,user){
        console.log('User Data: ' + user);
     })
  })

2) In case of Id

   redis.hgetall('user:1',function(err,user){
       console.log('User Data: ' + user);
    })