Quard

from django.conf import settings
from django.core.mail import send_mail
from django.template import Engine, Context

from myproject.celery import app


def render_template(template, context):
    engine = Engine.get_default()

Quard

from celery import group

@celery_app.task
def calculate_service_provider_task(user_id, provider_id):
    user = User.objects.get(pk=user_id)
    provider = ServiceProvider.objects.get(pk=provider_id)

    return calculate_service_provider(user, provider)

Quard

Python + Redis

API get

Running 30s test @ http://rpi:5000/api/v1/url/aaaa
  12 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   489.29ms  196.29ms   1.38s    82.02%
    Req/Sec    68.43     31.64   192.00     72.98%

Quard

@celery_app.task
def send_good_morning_mail_task(offset=0, limit=100):
    users = User.objects.filter(is_active=True).order_by('id')[offset:offset + limit]
    for user in users:
        send_good_morning_mail(user)

    if len(users) >= limit:
        send_good_morning_mail_task.delay(offset + limit, limit)

Quard

from celery.schedules import crontab


CELERY_BEAT_SCHEDULE = {
    'monday-statistics-email': {
        'task': 'myproject.apps.statistics.tasks.monday_email',
        'schedule': crontab(day_of_week=1, hour=7),
    },
}

Quard

celery -A myproject worker -l info -Q celery
celery -A myproject worker -l info -Q mail

Quard

CELERY_TASK_ROUTES = {
    'myproject.apps.mail.tasks.send_mail_task': {'queue': 'mail', },
}

Quard

send_mail_task.delay(('noreply@example.com', ), 'Celery cookbook test', 'test', {})

Quard

from datetime import datetime


send_mail_task.apply_async(
    (('noreply@example.com', ), 'Celery cookbook test', 'test', {}),
    countdown=15 * 60
)

send_mail_task.apply_async(
    (('noreply@example.com', ), 'Celery cookbook test', 'test', {}),

Quard

def view(request):
    find_job = find_best_service_provider_for_user.delay(request.user.pk)

    # do other stuff

    calculations_results = find_job.get().join()

    # process calculations_results and send response