I just released bitmapist (GitHub) - a powerful realtime analytics library that can help you answer following questions: Has user 123 been online today? This week? This month? Has user 123 performed action "X"? How many users have been act

I just released bitmapist (GitHub) - a powerful realtime analytics library that can help you answer following questions:

This library is very easy to use and enables you to create your own reports easily.

Using Redis bitmaps you can store events for millions of users in a very little amount of memory (megabytes). You should be careful about using huge ids (e.g. 2^32 or bigger) as this could require larger amounts of memory.

If you want to read more about bitmaps please read following:

Requires Redis 2.6+ and newest version of redis-py.

Installation

sudo pip install bitmapist

Examples

Setting things up:

from datetime import datetime, timedelta
from bitmapist import setup_redis, delete_all_events, mark_event,\
 MonthEvents, WeekEvents, DayEvents, HourEvents,\
 BitOpAnd, BitOpOr
now = datetime.utcnow()
last_month = datetime.utcnow() - timedelta(days=30)

Mark user 123 as active and has played a song:

mark_event('active', 123)
mark_event('song:played', 123)

Answer if user 123 has been active this month:

assert 123 in MonthEvents('active', now.year, now.month)
assert 123 in MonthEvents('song:played', now.year, now.month)

How many users have been active this week?

print len(WeekEvents('active', now.year, now.isocalendar()[1]))

Perform bit operations. How many users that have been active last month are still active this month?

active_2_months = BitOpAnd(
 MonthEvents('active', last_month.year, last_month.month),
 MonthEvents('active', now.year, now.month)
)
print len(active_2_months)
# Is 123 active for 2 months?
assert 123 in active_2_months

Work with nested bit operations (imagine what you can do with this ;-))!

active_2_months = BitOpAnd(
 BitOpAnd(
 MonthEvents('active', last_month.year, last_month.month),
 MonthEvents('active', now.year, now.month)
 ),
 MonthEvents('active', now.year, now.month)
)
print len(active_2_months)
assert 123 in active_2_months

原文地址：bitmapist: Powerful realtime analytics with Redis , 感谢原作者分享。