improve metrics performance

backend/.sqlx/query-45dde0dc2da12fe46b5975ed53b520fc4160c008c3d29fe7d99e609c0b6e3e6d.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "DELETE FROM metrics WHERE created_at < NOW() - INTERVAL '180 day'",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": []
+    },
+    "nullable": []
+  },
+  "hash": "45dde0dc2da12fe46b5975ed53b520fc4160c008c3d29fe7d99e609c0b6e3e6d"
+}

backend/.sqlx/query-b3dbdfb50ee8118bdaed3164b210cb549a34b96554ae1872355b90304f5dcb76.json

@@ -18,8 +18,8 @@
       "Left": []
     },
     "nullable": [
-      true,
-      false
+      false,
+      true
     ]
   },
   "hash": "b3dbdfb50ee8118bdaed3164b210cb549a34b96554ae1872355b90304f5dcb76"

backend/.sqlx/query-fec6d5674dc6b5a6a0ece419c40508835affcb7679a48f2a443777e829bd1e74.json

@@ -41,11 +41,11 @@
       ]
     },
     "nullable": [
-      true,
-      true,
-      true,
-      true,
-      true,
+      false,
+      false,
+      false,
+      false,
+      false,
       true
     ]
   },

backend/ee-repo-ref.txt

@@ -1 +1 @@
-527739ec21e0ee04f40bcabc50e7255ec9e48951
+96a2129f585a1bc6567ef08bd27aaa4aca70543f

backend/migrations/20250429211554_create_indices_on_queue.down.sql

@@ -0,0 +1 @@
+-- Add down migration script here

backend/migrations/20250429211554_create_indices_on_queue.up.sql

@@ -0,0 +1,2 @@
+-- Add up migration script here
+CREATE INDEX IF NOT EXISTS idx_metrics_id_created_at ON public.metrics (id, created_at DESC) WHERE id LIKE 'queue_%';