Use of Redis.

Pipfile

@@ -61,6 +61,7 @@ django-extensions = "~=3.1"
 django-leaflet = "~=0.28"
 django-htmlmin = "~=0.11"
 geopy = "~=2.2"
+django-redis = "~=5.0"
 
 [requires]
 python_version = "*"

SECRET_SETTINGS.py.dist

@@ -88,3 +88,11 @@ DB_USER = 'postgres'
 DB_PASSWORD = 'postgres'
 DB_HOST = 'db'
 DB_PORT = '5432'
+
+#########
+# Redis #
+#########
+
+REDIS_HOST = 'redis'
+REDIS_PORT = '6379'
+REDIS_DB = '1'

django_futils/settings.py

@@ -41,8 +41,9 @@ import django_futils.constants as const
 from SECRET_SETTINGS import (ALLOWED_HOSTS, DB_HOST, DB_NAME, DB_PASSWORD,
                              DB_PORT, DB_USER, DEBUG, INTERNAL_IPS,
                              LANGUAGE_CODE, LOCALE_DIR_SUFFIX, MEDIA_ROOT,
-                             MEDIA_URL, SECRET_KEY, STATIC_ROOT_SUFFIX,
-                             STATIC_URL, STATICFILES_DIR_SUFFIX, TIME_ZONE,
+                             MEDIA_URL, REDIS_DB, REDIS_HOST, REDIS_PORT,
+                             SECRET_KEY, STATIC_ROOT_SUFFIX, STATIC_URL,
+                             STATICFILES_DIR_SUFFIX, TIME_ZONE,
                              USE_X_FORWARDED_HOST)
 
 # Optional variables.
@@ -109,6 +110,9 @@ INSTALLED_APPS = [
 ]
 
 MIDDLEWARE = [
+    # See
+    # https://michal.karzynski.pl/blog/2013/07/14/using-redis-as-django-session-store-and-cache-backend/
+    'django.middleware.cache.UpdateCacheMiddleware',
     'htmlmin.middleware.HtmlMinifyMiddleware',
     'htmlmin.middleware.MarkRequestMiddleware',
     'django.middleware.security.SecurityMiddleware',
@@ -120,6 +124,7 @@ MIDDLEWARE = [
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
+    'django.middleware.cache.FetchFromCacheMiddleware',
 ]
 
 AUTHENTICATION_BACKENDS = [
@@ -145,6 +150,16 @@ TEMPLATES = [
     },
 ]
 
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://" + REDIS_HOST + ':' + REDIS_PORT + '/' + REDIS_DB,
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+        }
+    }
+}
+
 # Disable caching for debug so we can test the templates without reloading
 # the server.
 if DEBUG:

docker-compose.yml.dist

@@ -21,11 +21,20 @@
 
 version: '3.8'
 
+volumes:
+    redis:
+
 services:
     dependencies:
         image: docker_debian_postgis_django
         build:
             context: https://software.franco.net.eu.org/frnmst/docker-debian-postgis-django.git#6.0.0
+
+    redis:
+        image: redis:6.2.5
+        restart: always
+        hostname: redis
+
     db:
         # See
         # https://github.com/frnmst/docker-debian-postgis-django/blob/master/README.md#database
@@ -50,12 +59,14 @@ services:
             context: .
             dockerfile: Dockerfile
         restart: on-failure
+        links:
+            - db
         depends_on:
             - dependencies
-            - db
 
     web:
         image: django_futils_web
         restart: on-failure
-        depends_on:
+        links:
             - db
+            - redis

setup.py

@@ -61,5 +61,6 @@ setup(
         'django-leaflet>=0.28,<0.29',
         'django-htmlmin>=0.11,<0.12',
         'geopy>=2.2,<2.3',
+        'django-redis>=5.0,<5.1',
     ],
 )