Add clear_redis_cache management command

docs/CHANGELOG.rst

@@ -14,6 +14,10 @@ Fix
 ---
 - Correctly clear ``Redis`` cache on data restart
 
+Add
+---
+- Add ``clear_redis_cache`` management command
+
 
 ===================
 38.2.0 - 2023-12-15

resolwe/flow/management/commands/clear_redis_cache.py

@@ -0,0 +1,23 @@
+""".. Ignore pydocstyle D400.
+
+=================
+Clear Redis Cache
+=================
+
+Clear all the Redis Cache.
+"""
+
+
+from django.core.management.base import BaseCommand
+
+from resolwe.flow.managers.listener.redis_cache import redis_cache
+
+
+class Command(BaseCommand):
+    """Run the executor listener."""
+
+    help = "Clear Redis cache."
+
+    def handle(self, *args, **options):
+        """Clear the Redis cache."""
+        redis_cache.clear()