diff --git a/kadenios/settings.py b/kadenios/settings.py
deleted file mode 120000
index f1c999f..0000000
--- a/kadenios/settings.py
+++ /dev/null
@@ -1 +0,0 @@
-settings_dev.py
\ No newline at end of file
diff --git a/kadenios/settings/.gitignore b/kadenios/settings/.gitignore
new file mode 100644
index 0000000..2142506
--- /dev/null
+++ b/kadenios/settings/.gitignore
@@ -0,0 +1 @@
+secret.py
diff --git a/kadenios/settings_prod.py b/kadenios/settings/__init__.py
similarity index 100%
rename from kadenios/settings_prod.py
rename to kadenios/settings/__init__.py
diff --git a/kadenios/settings_base.py b/kadenios/settings/common.py
similarity index 54%
rename from kadenios/settings_base.py
rename to kadenios/settings/common.py
index 8a115c5..ca579f5 100644
--- a/kadenios/settings_base.py
+++ b/kadenios/settings/common.py
@@ -1,33 +1,49 @@
 """
-Django settings for kadenios project.
-
-Generated by 'django-admin startproject' using Django 2.2.12.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/2.2/topics/settings/
-
-For the full list of settings and their values, see
-https://docs.djangoproject.com/en/2.2/ref/settings/
+Paramètres communs entre dev et prod
 """
 
 import os
+import sys
 
 from django.urls import reverse_lazy
 
-# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
-BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+# #############################################################################
+#  Secrets
+# #############################################################################
+
+try:
+    from . import secret
+except ImportError:
+    raise ImportError(
+        "The secret.py file is missing.\n"
+        "For a development environment, simply copy secret_example.py"
+    )
 
 
-# Quick-start development settings - unsuitable for production
-# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
-
-# SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = "f*!6tw8c74)&k_&4$toiw@e=8m00xv_(tmjf9_#wq30wg_7n^8"
-
-ALLOWED_HOSTS = []
+def import_secret(name):
+    """
+    Shorthand for importing a value from the secret module and raising an
+    informative exception if a secret is missing.
+    """
+    try:
+        return getattr(secret, name)
+    except AttributeError:
+        raise RuntimeError("Secret missing: {}".format(name))
 
 
-# Application definition
+SECRET_KEY = import_secret("SECRET_KEY")
+ADMINS = import_secret("ADMINS")
+SERVER_EMAIL = import_secret("SERVER_EMAIL")
+EMAIL_HOST = import_secret("EMAIL_HOST")
+
+
+# #############################################################################
+#  Paramètres par défaut pour Django
+# #############################################################################
+
+DEBUG = False
+TESTING = len(sys.argv) > 1 and sys.argv[1] == "test"
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 INSTALLED_APPS = [
     "django.contrib.admin",
@@ -70,9 +86,11 @@ TEMPLATES = [
 
 WSGI_APPLICATION = "kadenios.wsgi.application"
 
+DEFAULT_FROM_EMAIL = "Kadenios <klub-dev@ens.fr>"
 
-# Password validation and authentication
-# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
+# #############################################################################
+#  Paramètres d'authentification
+# #############################################################################
 
 AUTH_PASSWORD_VALIDATORS = [
     {
@@ -99,29 +117,22 @@ AUTHENTICATION_BACKENDS = [
 LOGIN_URL = reverse_lazy("authens:login")
 LOGIN_REDIRECT_URL = "/"
 
-AUTHENS_USE_OLDCAS = False  # On n'utilise que le CAS normal pour l'instant
+AUTHENS_USE_OLDCAS = False
 
-# Internationalization
-# https://docs.djangoproject.com/en/2.2/topics/i18n/
+# #############################################################################
+#  Paramètres de langage
+# #############################################################################
 
 LANGUAGE_CODE = "fr-fr"
-
 TIME_ZONE = "Europe/Paris"
 
 USE_I18N = True
-
 USE_L10N = True
-
 USE_TZ = True
 
-
-# Mail configuration
-
-DEFAULT_FROM_EMAIL = "Kadenios <klub-dev@ens.fr>"
-
-
-# Static files (CSS, JavaScript, Images)
-# https://docs.djangoproject.com/en/2.2/howto/static-files/
+# #############################################################################
+#  Paramètres des fichiers statiques
+# #############################################################################
 
 STATIC_URL = "/static/"
 STATICFILES_DIRS = [BASE_DIR + "/shared/static"]
diff --git a/kadenios/settings/local.py b/kadenios/settings/local.py
new file mode 100644
index 0000000..54ac597
--- /dev/null
+++ b/kadenios/settings/local.py
@@ -0,0 +1,55 @@
+"""
+Paramètre pour le développement local
+"""
+
+import os
+
+from .common import *  # noqa
+from .common import BASE_DIR, INSTALLED_APPS, MIDDLEWARE, TESTING
+
+# #############################################################################
+#  Paramètres Django
+# #############################################################################
+
+ALLOWED_HOSTS = []
+
+DEBUG = True
+EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend"
+
+STATIC_URL = "/static/"
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": os.path.join(BASE_DIR, "db.sqlite3"),
+    }
+}
+
+# Use the default cache backend for local development
+CACHES = {"default": {"BACKEND": "django.core.cache.backends.locmem.LocMemCache"}}
+
+# Pas besoin de sécurité en local
+AUTH_PASSWORD_VALIDATORS = []
+PASSWORD_HASHERS = ["django.contrib.auth.hashers.MD5PasswordHasher"]
+
+# #############################################################################
+#  Paramètres pour la Django Debug Toolbar
+# #############################################################################
+
+
+def show_toolbar(request):
+    """
+    On active la debug-toolbar en mode développement local sauf :
+    - dans l'admin où ça ne sert pas à grand chose;
+    - si la variable d'environnement DJANGO_NO_DDT est à 1 → ça permet de la désactiver
+      sans modifier ce fichier en exécutant `export DJANGO_NO_DDT=1` dans le terminal
+      qui lance `./manage.py runserver`.
+    """
+    env_no_ddt = bool(os.environ.get("DJANGO_NO_DDT", None))
+    return DEBUG and not env_no_ddt and not request.path.startswith("/admin/")
+
+
+if not TESTING:
+    INSTALLED_APPS = INSTALLED_APPS + ["debug_toolbar"]
+    MIDDLEWARE = ["debug_toolbar.middleware.DebugToolbarMiddleware"] + MIDDLEWARE
+    DEBUG_TOOLBAR_CONFIG = {"SHOW_TOOLBAR_CALLBACK": show_toolbar}
diff --git a/kadenios/settings/prod.py b/kadenios/settings/prod.py
new file mode 100644
index 0000000..d463e6c
--- /dev/null
+++ b/kadenios/settings/prod.py
@@ -0,0 +1,58 @@
+"""
+Paramètres pour la mise en production
+"""
+
+import os
+
+from .common import *  # noqa
+from .common import BASE_DIR, import_secret
+
+# #############################################################################
+#  Secrets de production
+# #############################################################################
+
+REDIS_PASSWD = import_secret("REDIS_PASSWD")
+REDIS_DB = import_secret("REDIS_DB")
+REDIS_HOST = import_secret("REDIS_HOST")
+REDIS_PORT = import_secret("REDIS_PORT")
+
+DBNAME = import_secret("DBNAME")
+DBUSER = import_secret("DBUSER")
+DBPASSWD = import_secret("DBPASSWD")
+
+# #############################################################################
+#  À modifier possiblement lors de la mise en production
+# #############################################################################
+
+ALLOWED_HOSTS = ["kadenios.eleves.ens.fr", "www.kadenios.eleves.ens.fr"]
+
+STATIC_ROOT = os.path.join(
+    os.path.dirname(os.path.dirname(BASE_DIR)), "public", "kadenios", "static"
+)
+
+# #############################################################################
+#  Paramètres du cache
+# #############################################################################
+
+CACHES = {
+    "default": {
+        "BACKEND": "redis_cache.RedisCache",
+        "LOCATION": "redis://:{passwd}@{host}:{port}/{db}".format(
+            passwd=REDIS_PASSWD, host=REDIS_HOST, port=REDIS_PORT, db=REDIS_DB
+        ),
+    }
+}
+
+# #############################################################################
+#  Paramètres de la base de données
+# #############################################################################
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.postgresql_psycopg2",
+        "NAME": DBNAME,
+        "USER": DBUSER,
+        "PASSWORD": DBPASSWD,
+        "HOST": os.environ.get("DBHOST", "localhost"),
+    }
+}
diff --git a/kadenios/settings/secret_example.py b/kadenios/settings/secret_example.py
new file mode 100644
index 0000000..e61fe2a
--- /dev/null
+++ b/kadenios/settings/secret_example.py
@@ -0,0 +1,14 @@
+SECRET_KEY = "f*!6tw8c74)&k_&4$toiw@e=8m00xv_(tmjf9_#wq30wg_7n^8"
+ADMINS = None
+SERVER_EMAIL = "root@localhost"
+EMAIL_HOST = None
+
+
+DBUSER = "kadenios"
+DBNAME = "kadenios"
+DBPASSWD = "O1LxCADDA6Px5SiKvifjvdp3DSjfbp"
+
+REDIS_PASSWD = "dummy"
+REDIS_PORT = 6379
+REDIS_DB = 0
+REDIS_HOST = "127.0.0.1"
diff --git a/kadenios/settings_dev.py b/kadenios/settings_dev.py
deleted file mode 100644
index 06accf6..0000000
--- a/kadenios/settings_dev.py
+++ /dev/null
@@ -1,32 +0,0 @@
-import os
-
-from .settings_base import *  # noqa
-from .settings_base import BASE_DIR, INSTALLED_APPS, MIDDLEWARE
-
-ALLOWED_HOSTS = []
-
-DEBUG = True
-EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend"
-
-INSTALLED_APPS += [
-    "debug_toolbar",
-]
-
-MIDDLEWARE += [
-    "debug_toolbar.middleware.DebugToolbarMiddleware",
-]
-
-# Database
-# https://docs.djangoproject.com/en/2.2/ref/settings/#databases
-
-DATABASES = {
-    "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": os.path.join(BASE_DIR, "db.sqlite3"),
-    }
-}
-
-INTERNAL_IPS = [
-    "127.0.0.1",
-    "localhost",
-]
diff --git a/manage.py b/manage.py
index 7f9ab98..cc4c0ec 100755
--- a/manage.py
+++ b/manage.py
@@ -5,7 +5,7 @@ import sys
 
 
 def main():
-    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'kadenios.settings')
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "kadenios.settings.local")
     try:
         from django.core.management import execute_from_command_line
     except ImportError as exc:
@@ -17,5 +17,5 @@ def main():
     execute_from_command_line(sys.argv)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()