hw6, hw7

- Redis / Celery / Celery Beat
- кэширование популярных тегов и лучших участников
- асинхронные уведомления в Centrifugo
- отправка email-уведомлений через Celery
- полнотекстовый поиск и подсказки
- Docker Compose инфраструктура

application/__init__.py

@@ -0,0 +1,3 @@
+from .celery import app as celery_app
+
+__all__ = ('celery_app',)

application/celery.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+import os
+from celery import Celery
+from django.conf import settings
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'application.settings')
+
+app = Celery('application')
+app.config_from_object('django.conf:settings', namespace='CELERY')
+app.autodiscover_tasks()
+
+
+@app.task(bind=True)
+def debug_task(self):
+    print(f'Request: {self.request!r}')

application/settings.py

@@ -26,7 +26,14 @@ SECRET_KEY = os.getenv("SECRET_KEY")
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = os.getenv("DEBUG") == "True"
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = ['127.0.0.1', 'localhost']
+
+# Allow requests coming through nginx on host:8080 (used in local Docker Compose)
+# Add any additional origins you use (including scheme and port) here.
+CSRF_TRUSTED_ORIGINS = [
+    'http://127.0.0.1:8080',
+    'http://localhost:8080',
+]
 
 
 # Application definition
@@ -38,6 +45,7 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'django.contrib.postgres',
     'questions',
 ]
 
@@ -68,6 +76,7 @@ TEMPLATES = [
                 'django.template.context_processors.request',
                 'django.contrib.auth.context_processors.auth',
                 'django.contrib.messages.context_processors.messages',
+                'questions.context_processors.sidebar_data',
             ],
         },
     },
@@ -125,7 +134,7 @@ USE_TZ = True
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/5.2/howto/static-files/
 
-STATIC_URL = 'static/'
+STATIC_URL = '/static/'
 
 STATIC_ROOT = os.path.join(BASE_DIR, 'static')
 
@@ -136,4 +145,51 @@ DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 
 
 MEDIA_URL = '/media/'
-MEDIA_ROOT = BASE_DIR / 'media'
+MEDIA_ROOT = BASE_DIR / 'media'
+
+# Redis / Celery / Cache settings
+REDIS_HOST = os.getenv('REDIS_HOST', 'redis')
+REDIS_PORT = os.getenv('REDIS_PORT', '6379')
+REDIS_CACHE_DB = os.getenv('REDIS_CACHE_DB', '1')
+REDIS_BROKER_DB = os.getenv('REDIS_BROKER_DB', '2')
+REDIS_BEAT_DB = os.getenv('REDIS_BEAT_DB', '3')
+
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": f"redis://{REDIS_HOST}:{REDIS_PORT}/{REDIS_CACHE_DB}",
+        "OPTIONS": {"CLIENT_CLASS": "django_redis.client.DefaultClient"},
+        "TIMEOUT": 60 * 10,
+    }
+}
+
+# Celery settings
+CELERY_BROKER_URL = f"redis://{REDIS_HOST}:{REDIS_PORT}/{REDIS_BROKER_DB}"
+CELERY_RESULT_BACKEND = f"redis://{REDIS_HOST}:{REDIS_PORT}/{REDIS_BEAT_DB}"
+CELERY_BEAT_SCHEDULER = "redbeat.RedBeatScheduler"
+CELERY_REDBEAT_REDIS_URL = f"redis://{REDIS_HOST}:{REDIS_PORT}/{REDIS_BEAT_DB}"
+
+# Centrifugo (real-time) settings
+CENTRIFUGO_URL = os.getenv('CENTRIFUGO_URL', 'http://centrifugo:8000')
+CENTRIFUGO_API_KEY = os.getenv('CENTRIFUGO_API_KEY', 'centrifugo_secret')
+
+# Email settings (use maildev for local development)
+EMAIL_BACKEND = os.getenv('EMAIL_BACKEND', 'django.core.mail.backends.smtp.EmailBackend')
+EMAIL_HOST = os.getenv('EMAIL_HOST', 'maildev')
+EMAIL_PORT = int(os.getenv('EMAIL_PORT', '1025'))
+EMAIL_USE_TLS = os.getenv('EMAIL_USE_TLS', 'False') == 'True'
+DEFAULT_FROM_EMAIL = os.getenv('DEFAULT_FROM_EMAIL', 'webmaster@localhost')
+
+# Celery beat schedule (periodic tasks)
+from celery.schedules import crontab
+
+CELERY_BEAT_SCHEDULE = {
+    'rebuild_popular_tags': {
+        'task': 'questions.tasks.rebuild_popular_tags',
+        'schedule': crontab(minute='*/30'),
+    },
+    'rebuild_best_members': {
+        'task': 'questions.tasks.rebuild_best_members',
+        'schedule': crontab(minute='*/15'),
+    },
+}