#Simple Message Queue

Push in O(1). GET in O(N), N is the number of messages in the specified range to get. ACK in O(N), where N is the number of messages to be acked and removed by the operation.

How to use:

# First, get your redis db
>>> r = redis.StrictRedis(host='127.0.0.1', port=6379, db=0)

>>> queue = MessageQueue(r)

# push message to queue, 'msg_id' is required.
>>> message1 = {'text': 'hello world!', 'msg_id': '2ebd68'}
>>> message2 = {'text': 'hi world!', 'msg_id': '4dce26'}
>>> queue.push_to_queue(user_id, message1)
True

>>> queue.push_to_queue(user_id, message2)
True

# get messages from queue, specific user_id and page_size.
>>> queue.get_messages(user_id, page_size)
[{'text': 'hello world!'}, {'text': 'hi world!'}]

# ack messages, msg_id should be unique.
>>> queue.ack_messages(user_id, msg_id, last_position)
True
# If msg_id in a wrong last position.
False