frontpage: add cache

site/zenodo_rdm/decorators.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2023 CERN.
+#
+# ZenodoRDM is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+"""Decorators."""
+
+
+from functools import wraps
+
+from invenio_cache import current_cache
+from flask import session
+from flask_login import current_user
+
+
+def has_flashes_or_authenticated_user():
+    """Return True if there are pending flashes or user is authenticated."""
+    return "_flashes" in session or current_user.is_authenticated
+
+
+def cached_unless_authenticated_or_flashes(timeout=50, key_prefix="default"):
+    """Cache anonymous traffic."""
+    def caching(f):
+        @wraps(f)
+        def wrapper(*args, **kwargs):
+            cache_fun = current_cache.cached(
+                timeout=timeout, key_prefix=key_prefix,
+                unless=has_flashes_or_authenticated_user)
+            return cache_fun(f)(*args, **kwargs)
+        return wrapper
+    return caching

site/zenodo_rdm/views.py

@@ -13,12 +13,14 @@
 from invenio_records_resources.resources.records.utils import search_preference
 from marshmallow import ValidationError
 
+from .decorators import cached_unless_authenticated_or_flashes
 from .support.support import ZenodoSupport
 
 
 #
 # Views
 #
+@cached_unless_authenticated_or_flashes(timeout=600, key_prefix="frontpage")
 def frontpage_view_function():
     """Zenodo frontpage view."""
     recent_uploads = current_rdm_records.records_service.search(