update celery settings

backend/core/settings/production.py

@@ -58,6 +58,18 @@ CELERY_RESULT_BACKEND = "redis://redis:6379/0"
 CELERY_TIMEZONE = "UTC"
 CELERY_BEAT_SCHEDULER = 'django_celery_beat.schedulers:DatabaseScheduler'
 
+# Kill any task that runs longer than 5 minutes — prevents a hung external
+# call (Nobitex, bank verify, SMS) from freezing the worker pool indefinitely.
+CELERY_TASK_TIME_LIMIT = 300
+CELERY_TASK_SOFT_TIME_LIMIT = 240
+
+# Recycle each worker child after 200 tasks to release memory/connections.
+CELERY_WORKER_MAX_TASKS_PER_CHILD = 200
+
+# Expire task results after 1 hour instead of the 1-day default. We don't
+# read results, so this just keeps Redis lean.
+CELERY_RESULT_EXPIRES = 3600
+
 from celery.schedules import crontab
 
 CELERY_BEAT_SCHEDULE = {