Add management command to clear cache

website/common/management/commands/clear_cache.py

@@ -0,0 +1,20 @@
+from argparse import ArgumentParser
+
+from django.core.cache import DEFAULT_CACHE_ALIAS, caches
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    def add_arguments(self, parser: ArgumentParser) -> None:
+        parser.add_argument(
+            "cache",
+            type=str,
+            default=DEFAULT_CACHE_ALIAS,
+            choices=sorted(list(caches)),
+            help="Cache to clear",
+        )
+
+    def handle(self, *args: list, **options: dict) -> None:
+        cache_name: str = options["cache"]  # type: ignore
+        caches[cache_name].clear()
+        self.stdout.write(f"Cleared cache '{cache_name}'.")