Merge remote-tracking branch 'origin/main'

app.py

@@ -65,6 +65,11 @@
 app = Flask(__name__, static_url_path='')
 app.url_map.strict_slashes = False  # Ignore trailing slashes in URLs
 app.json = JinjaCompatibleJsonProvider(app)
+
+# Most files should be loaded through the CDN which has its own caching period and invalidation.
+# Use 5 minutes as a reasonable default for all files we load elsewise.
+app.config['SEND_FILE_MAX_AGE_DEFAULT'] = datetime.timedelta(minutes=5)
+
 babel = Babel(app)
 
 jinja_partials.register_extensions(app)
@@ -2245,6 +2250,9 @@ def try_parse_int(x):
     # own file loading routines also hot-reload.
     utils.set_debug_mode(not os.getenv('NO_DEBUG_MODE'))
 
+    # For local debugging, fetch all static files on every request
+    app.config['SEND_FILE_MAX_AGE_DEFAULT'] = None
+
     # If we are running in a Python debugger, don't use flasks reload mode. It creates
     # subprocesses which make debugging harder.
     is_in_debugger = sys.gettrace() is not None

website/cdn.py

@@ -65,5 +65,6 @@ def _send_static_file(self, filename):
         """
         response = self.app.send_static_file(filename)
         response.headers["Access-Control-Allow-Origin"] = "*"
+        response.cache_control.no_cache = None
         response.cache_control.max_age = 24 * 3600  # A day
         return response