From cee319570841c2f162ec8aa73821d1a790e50c33 Mon Sep 17 00:00:00 2001
From: Hariom Balhara <hariombalhara@gmail.com>
Date: Tue, 13 Jan 2026 14:23:10 +0530
Subject: [PATCH] fix: optimize routing form mutation to avoid costly name
 update triggers (#26781)

* fix: optimize routing form mutation to avoid costly name update triggers

Co-Authored-By: hariom@cal.com <hariombalhara@gmail.com>

* Add load test script for form responses

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 .../routing-forms/formMutation.handler.ts     |  8 +-
 scripts/seed-load-test-form-reponses.ts       | 91 +++++++++++++++++++
 2 files changed, 97 insertions(+), 2 deletions(-)
 create mode 100644 scripts/seed-load-test-form-reponses.ts

diff --git a/packages/trpc/server/routers/apps/routing-forms/formMutation.handler.ts b/packages/trpc/server/routers/apps/routing-forms/formMutation.handler.ts
index c114336ad0..cbe6d6dbdd 100644
--- a/packages/trpc/server/routers/apps/routing-forms/formMutation.handler.ts
+++ b/packages/trpc/server/routers/apps/routing-forms/formMutation.handler.ts
@@ -37,7 +37,7 @@ export const formMutationHandler = async ({ ctx, input }: FormMutationHandlerOpt
 
   const existingForm = await prisma.app_RoutingForms_Form.findUnique({
     where: { id },
-    select: { id: true },
+    select: { id: true, name: true },
   });
   if (existingForm) {
     // Check PBAC permissions for updating routing forms only
@@ -144,6 +144,8 @@ export const formMutationHandler = async ({ ctx, input }: FormMutationHandlerOpt
     delete settings.sendUpdatesTo;
   }
 
+  const oldFormName = existingForm?.name;
+
   return await prisma.app_RoutingForms_Form.upsert({
     where: {
       id: id,
@@ -173,7 +175,9 @@ export const formMutationHandler = async ({ ctx, input }: FormMutationHandlerOpt
     update: {
       disabled: disabled,
       fields,
-      name: name,
+      // Don't update name field if the name is the same as the old name to ensure that it doesn't change "name" update triggers which are very costly.
+      // This is an immediate quick workaround. Correct fix is to decouple trigger related work from the transaction.
+      name: oldFormName !== name ? name : undefined,
       description,
       settings: settings === null ? Prisma.JsonNull : settings,
       routes: routes === null ? Prisma.JsonNull : routes,
diff --git a/scripts/seed-load-test-form-reponses.ts b/scripts/seed-load-test-form-reponses.ts
new file mode 100644
index 0000000000..394028e424
--- /dev/null
+++ b/scripts/seed-load-test-form-reponses.ts
@@ -0,0 +1,91 @@
+/**
+ * Run this script quickly as `npx dotenv -e .env -- npx tsx scripts/seed-load-test-form-reponses.ts` from the root of the repo.
+ */
+import { prisma } from "@calcom/prisma";
+import type { App_RoutingForms_Form } from "@calcom/prisma/client";
+
+async function createTestForm(): Promise<App_RoutingForms_Form> {
+  const user = await prisma.user.findFirstOrThrow({
+    where: { email: "owner1-acme@example.com" },
+  });
+  if (!user) {
+    throw new Error("owner1-acme@example.com not found");
+  }
+  const testForm =
+    (await prisma.app_RoutingForms_Form.findFirst({
+      where: { name: "Load Test Form" },
+    })) ||
+    (await prisma.app_RoutingForms_Form.create({
+      data: {
+        name: "Load Test Form",
+        userId: user.id,
+        fields: [
+          {
+            id: "test-field-1",
+            type: "text",
+            label: "Test Field",
+            required: true,
+          },
+        ],
+        routes: [
+          {
+            id: "test-route-1",
+            action: { type: "customPageMessage", value: "Thank you" },
+            isFallback: true,
+            queryValue: { id: "test-route-1", type: "group" },
+          },
+        ],
+      },
+    }));
+
+  return testForm;
+}
+
+/**
+ * Creates a form in Acme's owner-1 account and creates 300,000 responses in it.
+ */
+async function createBulkResponsesAndExport(): Promise<void> {
+  const testForm = await createTestForm();
+  console.log(`Using form: ${testForm.id}`);
+
+  const TOTAL_RESPONSES = 300000;
+  const BATCH_SIZE = 1000;
+  const NUM_BATCHES = Math.ceil(TOTAL_RESPONSES / BATCH_SIZE);
+
+  for (let batch = 0; batch < NUM_BATCHES; batch++) {
+    const batchStart = batch * BATCH_SIZE;
+    const batchEnd = Math.min((batch + 1) * BATCH_SIZE, TOTAL_RESPONSES);
+    const batchSize = batchEnd - batchStart;
+
+    console.log(`Creating batch ${batch + 1}/${NUM_BATCHES} (responses ${batchStart + 1}-${batchEnd})...`);
+
+    // Create responses in parallel within each batch
+    const responsePromises = Array.from({ length: batchSize }, (_, i) => {
+      const responseIndex = batchStart + i;
+      return prisma.app_RoutingForms_FormResponse.create({
+        data: {
+          formFillerId: `load-test-filler-${responseIndex}`,
+          formId: testForm.id,
+          response: {
+            "test-field-1": {
+              label: "Test Field",
+              value: `Response ${responseIndex}`,
+            },
+          },
+        },
+      });
+    });
+
+    await Promise.all(responsePromises);
+
+    console.log(`✓ Batch ${batch + 1} completed (${batchEnd}/${TOTAL_RESPONSES} total)`);
+
+    await new Promise((resolve) => setTimeout(resolve, 100));
+  }
+
+  console.log(`\n✓ Successfully created ${TOTAL_RESPONSES} responses`);
+}
+
+createBulkResponsesAndExport()
+  .catch(console.error)
+  .finally(() => prisma.$disconnect());