diff --git a/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.down.sql b/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.down.sql
new file mode 100644
index 0000000000..d2f607c5b8
--- /dev/null
+++ b/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.down.sql
@@ -0,0 +1 @@
+-- Add down migration script here
diff --git a/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.up.sql b/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.up.sql
new file mode 100644
index 0000000000..1ee9d2d43b
--- /dev/null
+++ b/backend/migrations/20250902085503_notify_resource_cache_on_variable_change.up.sql
@@ -0,0 +1,23 @@
+-- Add up migration script here
+CREATE OR REPLACE FUNCTION notify_var_resource_cache_change()
+RETURNS TRIGGER AS $$
+BEGIN
+    IF TG_TABLE_NAME = 'variable' THEN
+    PERFORM pg_notify('var_cache_invalidation', 
+        json_build_object(
+            'workspace_id', COALESCE(NEW.workspace_id, OLD.workspace_id),
+            'path', COALESCE(NEW.path, OLD.path),
+            'operation', TG_OP
+        )::text
+    );
+    END IF;
+    PERFORM pg_notify('resource_cache_invalidation',
+        json_build_object(
+            'workspace_id', COALESCE(NEW.workspace_id, OLD.workspace_id),
+            'path', COALESCE(NEW.path, OLD.path),
+            'operation', TG_OP
+        )::text
+    );
+    RETURN COALESCE(NEW, OLD);
+END;
+$$ LANGUAGE plpgsql;
\ No newline at end of file