When I do anything with Django's manage.py (migrate, collectstatic, runserver, ...), I see the two messages:

2023年02月20日T18:57:54+0000 | DEBUG | IDOM is in debug mode
IDOM has detected component sessions in the database, but no timestamp was found in cache. This may indicate that the cache has been cleared.

and it currently takes ~10sec. The DB is remote.

Another scenario is when writing scratch code or tests that start with

import os
import django
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "[myproject].settings")
django.setup()

Omitting django_idom from INSTALLED_APPS removes the delay.

django-idom==3.0.0a2
idom==1.0.0a3