A mini notification system based on Codeigniter and MongoDB.

Whenever a notification needs to be sent out, it is pushed to the client using Tornado.

Implements persistent connection using long polling and Tornado.

Hence, notifications get pushed instantly to user, if the user is online and connected.

The Tornado implementation is here: https://github.com/harkirat1892/tornado_push_server

Links:

/login

/signup

/profile

/notifications

MongoDB Architecture:

There are 5 collections:

• users

  _id

  name

  email

  password

  created

  last_seen

• posts

  _id

  owner_id

  text

  created_on

• comments

  _id

  post_id

  text

  by_user_id

  created_on

• notifications

  _id

  to_user_id

  from_user_id

  post_id

  is_read

  is_fresh

  created_on

• push_notifications

  _id

  users

  is_processed

  created_on