feat(api): add cache + busting for admin

polylan_submitter/polylan_submitter/api.py

@@ -1,4 +1,6 @@
 from ninja import NinjaAPI
+from django.core.cache import cache
+from django.http import HttpRequest
 from submissions.api import router as submissions_router
 from submissions.schemas import UserInfoOut
 from animations.api import router as results_router
@@ -41,6 +43,19 @@ def health_check(request):
     return {"status": "healthy", "service": "polylan-submitter-api"}
 
 
+# Cache management endpoint
+@api.post("/cache/clear")
+def clear_cache(request: HttpRequest):
+    """Clear all API caches (admin only)"""
+    if not request.user.is_authenticated or not request.user.is_staff:
+        return 403, {"detail": "Admin access required"}
+
+    keys = cache.keys("api:*")
+    cache.delete_many(keys)
+
+    return {"detail": f"Cleared {len(keys)} cache entries"}
+
+
 # User info endpoint
 @api.get("/user", response=UserInfoOut)
 def get_user_info(request):

polylan_submitter/polylan_submitter/settings.py

@@ -145,6 +145,18 @@ MEDIA_ROOT = BASE_DIR / "media"
 FILE_UPLOAD_MAX_MEMORY_SIZE = 256 * 1024 * 1024  # 256MB
 DATA_UPLOAD_MAX_MEMORY_SIZE = 256 * 1024 * 1024  # 256MB
 
+# Caching Configuration
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://127.0.0.1:6379/11",
+        "TIMEOUT": 300,  # 5 minutes default
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+        },
+    }
+}
+
 # Allowed file types for submissions
 ALLOWED_SUBMISSION_TYPES = [
     "image/jpeg",