Add server cache

sncf/settings.py

@@ -12,6 +12,8 @@ https://docs.djangoproject.com/en/5.0/ref/settings/
 
 from pathlib import Path
 
+from corsheaders.defaults import default_headers
+
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
 
@@ -61,6 +63,12 @@ CORS_ALLOWED_ORIGINS = [
     "http://localhost:3000",
 ]
 
+CORS_ALLOW_HEADERS = (
+    *default_headers,
+    "If-Modified-Since",
+    'Cache-Control',
+)
+
 ROOT_URLCONF = "sncf.urls"
 
 TEMPLATES = [