Moved mongo and memcached connection into a separate module

db.coffee

@@ -0,0 +1,25 @@
+config = require './config'
+mongo = require 'mongodb'
+Memcached = require 'memcached'
+
+exports.memcached = new Memcached(config.MEMCACHED_SOCKET)
+
+# Create MongoDB connections
+dbserver = new mongo.Server(config.MONGODB_SOCKET, 0, {auto_reconnect: true})
+tasksCollection = null
+devicesCollection = null
+db = new mongo.Db(config.DATABASE_NAME, dbserver, {native_parser:true, safe:true})
+
+db.open( (err, db) ->
+  db.collection('tasks', (err, collection) ->
+    exports.tasksCollection = collection
+    collection.ensureIndex({device: 1, timestamp: 1}, (err) ->
+    )
+  )
+
+  db.collection('devices', (err, collection) ->
+    exports.devicesCollection = collection
+  )
+)
+
+exports.mongo = mongo