Demonstrates how easy it is to save json data directly to MongoDB

twitter_trends_to_mongo.rb

require 'json'
require 'open-uri'
require 'mongo'

include Mongo

url = 'http://search.twitter.com/trends.json'
buffer = open(url, 'UserAgent' => 'Ruby-Wget').read
result = JSON.parse(buffer)

c = Connection.new('localhost')
db = c.db('twitter')
trends = db.collection('trends')
trends.insert result

trends.find_one