Django app for efficiently measuring usage
How active are users on your Django site? Django can tell you when users registered (User.date_joined) and when they signed in (User.last_login). But sessions are long-lived so this doesn’t really answer the question.
Souvenirs is a Django app for efficiently measuring user activity over time, and making that information available through an API.
Get the latest stable release from PyPI
pip install django-souvenirs
Or the latest commit from GitHub
pip install -e git+git://github.com/appsembler/django-souvenirs.git#egg=souvenirs
Add to settings.py
INSTALLED_APPS += [ 'souvenirs', ] MIDDLEWARE_CLASSES += [ 'souvenirs.middleware.SouvenirsMiddleware', ]
Migrate your database
./manage.py migrate souvenirs
There are two core API calls: souvenez (“remember”) and count_active_users.
You can call souvenez(user) as often per user as you’d like, by default it will rate-limit DB entries to once per hour. If you use the provided middleware, then souvenez will be called automatically on each request.
Call count_active_users to find the number of unique users active for a given time period. For example:
>>> from souvenirs.control import count_active_users >>> from django.utils import timezone >>> from datetime import timedelta >>> now = timezone.now() >>> count_active_users(start=now - timedelta(days=1), end=now) 42
Either start or end can be omitted, which makes the query unbounded in that direction. The above call is effectively the same as omitting end:
>>> count_active_users(start=timezone.now() - timedelta(days=1)) 42
and this counts the total number of users active for all time, or at least since you installed the middleware:
>>> count_active_users() 1012
Souvenirs provides some functions for reporting registered users and activity over a period of time. For example, to see activity per calendar month for 2016:
>>> from datetime import datetime >>> from django.utils import timezone >>> from souvenirs.reports import calendar_monthly_usage >>> start = datetime(2016, 1, 1) # inclusive >>> end = datetime(2017, 1, 1) # exclusive >>> for d in calendar_monthly_usage(start=timezone.make_aware(start), end=timezone.make_aware(end)): ... print(d['labels']['calendar_year_month'], d['usage']['registered_users'], d['usage']['activated_users'], # User.is_active d['usage']['active_users']) 2016-01 12 10 9 2016-02 20 13 11 2016-03 38 16 10 2016-04 38 28 14 2016-05 38 29 20 2016-06 57 46 37 2016-07 62 58 43 2016-08 117 80 49 2016-09 175 300 75 2016-10 280 333 89 2016-11 420 360 99 2016-12 588 540 151
See reports.py for additional reporting functions, especially for starting subscriptions on arbitrary days (instead of calendar months).
Souvenirs uses hopefully sane defaults for all settings. Here’s what you can override if you want:
SOUVENIRS_RATELIMIT_SECONDS: how often to record an active user in the DB, default 3600
SOUVENIRS_CACHE_NAME: which cache to use for rate-limiting, default 'default'
SOUVENIRS_CACHE_PREFIX: how to prefix rate-limiting cache entries, default 'souvenirs.'
SOUVENIRS_USAGE_REPORTS_FUNCTION: all the reporting functions call a low-level function usage_for_periods. This can be overridden (probably wrapped) if you’d like to use the souvenirs reporting functions to generate richer data, for example incorporating some other data per time period.
hub clone appsembler/django-souvenirs cd django-souvenirs git checkout -b my-awesome-feature # hack hack hack! tox --skip-missing-interpreters git commit -am "my awesome commit" hub fork # for example agriffis/django-souvenirs git push --set-upstream agriffis # insert your github user here hub pull-request
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