Monitoring of active users in Django using Redis
Online monitoring of active users in Django using Redis
Collecting information about active users in the Django application for last specified time interval, using Redis cache.
- Python: 2.7, 3.3, 3.4, 3.5, 3.6
- Django: 1.5+
- Django-redis: 4.4.4
pip install django-active-users
Your django application should have a Redis cache setting. See more in django-redis official documentation.
Add active_users.middleware.ActiveUsersSessionMiddleware to your project’s MIDDLEWARE after the SessionMiddleware.
MIDDLEWARE = ( ... 'django.contrib.sessions.middleware.SessionMiddleware', 'active_users.middleware.ActiveUsersSessionMiddleware', ... )
For applications with Django version earlier than 1.10 use MIDDLEWARE_CLASSES option
MIDDLEWARE_CLASSES = ( ... 'django.contrib.sessions.middleware.SessionMiddleware', 'active_users.middleware.ActiveUsersSessionMiddleware', ... )
ACTIVE_USERS_KEY_EXPIRE - Time of key expire (interval after the last request during which the visitor is considered active) in seconds. Default is 20.
ACTIVE_USERS_EXCLUDE_URL_PATTERNS - List of regular expressions for excluded URLs. If they are matched, the visitor (and pageview) key will not be create.
ACTIVE_USERS_KEY_CLASS - Class of visitor key entry. It should be a descendant of active_users.keys.AbstractActiveUserEntry. Default active_users.keys.ActiveUserEntry. See more in Custom dimensions in the keys
You can use API for getting information about active users. You can also call methods from active_users.api module directly.
- get_active_users_count - returns count of active users (users, who visited site for the last time interval, which is set by option ACTIVE_USERS_KEY_EXPIRE)
- get_active_users - returns list of dictionaries with information about active users; keys of dictionaries are set from field fields of entry class, which is set by option ACTIVE_USERS_KEY_CLASS
Also, you can include special view in your Django application, adding the URL pattern to your urls.py file
urlpatterns = [ ... url(r'^active-users/', include('active_users.api.urls')), ... ]
Custom dimensions in the keys
By default, 4 dimensions are saved in the keys (user_id, session_id, IP, username). This is provided by class ActiveUserEntry, which inherits from abstract class AbstractActiveUserEntry. You can use your dimensions, defined in your own class, which should be a descendant of class AbstractActiveUserEntry and you need to define the logic of using these dimensions in the class method create_from_request.
For example, we need to save information about service, which makes request, and this information we can take from request header. Also, we want use all dimensions from class ActiveUserEntry.
from active_users.keys import ActiveUserEntry class OurActiveUserEntry(ActiveUserEntry): fields = ('service_id',) + ActiveUserEntry.fields @classmethod def create_from_request(cls, request): instance = super(OurActiveUserEntry, cls).create_from_request(request) instance.app_id = request.META.get('HTTP_SERVICE_ID', u'') return instance
At the end, we need to specify option ACTIVE_USERS_KEY_CLASS in the settings.py.
ACTIVE_USERS_KEY_CLASS = 'my_app.keys.OurActiveUserEntry'
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