From 88098f5b2503f49ba55c0a8e6ba646323e110718 Mon Sep 17 00:00:00 2001
From: Sajeyks <sajeyksmwangi@gmail.com>
Date: Tue, 6 Oct 2026 19:55:18 +0300
Subject: [PATCH] Use Redis for the cache instead of memcached

CACHE_URL (default redis://redis:6379/1) feeds the built-in RedisCache
backend. Redis is already part of compose for Celery, so this drops
pylibmc, python-memcached and libmemcached-dev.
---
 .env.docker                 | 1 +
 Dockerfile                  | 1 -
 dynamicweb/settings/base.py | 4 ++--
 dynamicweb/settings/prod.py | 7 -------
 requirements.archlinux.txt  | 1 -
 requirements.debian.txt     | 2 --
 requirements.txt            | 2 --
 7 files changed, 3 insertions(+), 15 deletions(-)

diff --git a/.env.docker b/.env.docker
index c97ada00..31053058 100644
--- a/.env.docker
+++ b/.env.docker
@@ -14,6 +14,7 @@ POSTGRES_HOST=db
 
 CELERY_BROKER_URL=redis://redis:6379/0
 CELERY_RESULT_BACKEND=redis://redis:6379/0
+CACHE_URL=redis://redis:6379/1
 
 # Host -> urlconf. Add the VPS IP / domain here if you access it that way.
 UNGLEICH_SITE_CONFIGS={"ungleich.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"blog.ungleich.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"comic.ungleich.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"digitalglarus.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"datacenterlight.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"rails-hosting.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"django-hosting.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"node-hosting.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"devuanhosting.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"devuanhosting.com":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"ipv6onlyhosting.com":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"digitalezukunft.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"hack4glarus.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"xn--nglarus-n2a.ch":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"localhost:8000":{"MULTISITE_CMS_URL":"dynamicweb.urls"},"127.0.0.1:8000":{"MULTISITE_CMS_URL":"dynamicweb.urls"}}
diff --git a/Dockerfile b/Dockerfile
index 6d7c6c65..58ca55d2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,6 @@ RUN apk add --update --no-cache \
     jpeg-dev \
     libxml2-dev \
     libxslt-dev \
-    libmemcached-dev \
     zlib-dev \
     libffi-dev \
     && rm -rf /var/cache/apk/*
diff --git a/dynamicweb/settings/base.py b/dynamicweb/settings/base.py
index e2aa7708..1ee2e546 100644
--- a/dynamicweb/settings/base.py
+++ b/dynamicweb/settings/base.py
@@ -393,8 +393,8 @@ CMS_PERMISSION = True
 
 CACHES = {
     'default': {
-        'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
-        'LOCATION': '127.0.0.1:11211',
+        'BACKEND': 'django.core.cache.backends.redis.RedisCache',
+        'LOCATION': env('CACHE_URL', 'redis://redis:6379/1'),
     }
 }
 
diff --git a/dynamicweb/settings/prod.py b/dynamicweb/settings/prod.py
index b222912f..e67467ff 100644
--- a/dynamicweb/settings/prod.py
+++ b/dynamicweb/settings/prod.py
@@ -7,13 +7,6 @@ DEBUG = False
 
 EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
 
-CACHES = {
-    'default': {
-        'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
-        'LOCATION': '127.0.0.1:11211',
-    }
-}
-
 # MANAGERS = ADMINS
 
 REGISTRATION_MESSAGE['message'] = REGISTRATION_MESSAGE['message'].format(host='digitalglarus.ch',
diff --git a/requirements.archlinux.txt b/requirements.archlinux.txt
index 15184f0d..6754ad98 100644
--- a/requirements.archlinux.txt
+++ b/requirements.archlinux.txt
@@ -1,2 +1 @@
 base-devel
-libmemcached
diff --git a/requirements.debian.txt b/requirements.debian.txt
index 737655a8..cf1ab0fd 100644
--- a/requirements.debian.txt
+++ b/requirements.debian.txt
@@ -17,8 +17,6 @@ liblcms2-dev
 liblzma-dev
 libmagickcore-dev
 libmagickwand-dev
-libmemcached
-libmemcached-dev
 libncurses-dev
 libpq-dev
 libreadline-dev
diff --git a/requirements.txt b/requirements.txt
index 087ab3d2..6e40dda3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -95,11 +95,9 @@ pyasn1==0.6.4
 pycodestyle==2.15.0
 pycryptodome==3.24.0
 pyflakes==4.0.2
-pylibmc==1.6.3
 pyotp==2.10.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.2.4
-python-memcached==1.62
 python-slugify==9.1.2
 pytz==2026.5
 rcssmin==1.2.2