perf(backend): 通知をRedisに保存するように

Resolve #10168

packages/backend/migration/1680582195041-cleanup.js

@@ -0,0 +1,11 @@
+export class cleanup1680582195041 {
+    name = 'cleanup1680582195041'
+
+    async up(queryRunner) {
+			await queryRunner.query(`DROP TABLE "notification" `);
+    }
+
+    async down(queryRunner) {
+        
+    }
+}