From b1c24af031c04b8ecc74f0a6749f161cdc4881dd Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Sun, 3 May 2026 08:20:30 +0000
Subject: [PATCH] perf: Parallelize product pagination queries using
 Promise.all

Parallelized the sequential data fetch and total count database queries in `app/api/products/route.ts` using `Promise.all` to reduce request latency and eliminate an unnecessary N+1 pattern. Logged this Drizzle ORM optimization pattern in `.jules/bolt.md`.

Co-authored-by: f4teless <60130665+f4teless@users.noreply.github.com>
---
 .jules/bolt.md            |  3 +++
 app/api/products/route.ts | 26 ++++++++++++++------------
 2 files changed, 17 insertions(+), 12 deletions(-)
 create mode 100644 .jules/bolt.md

diff --git a/.jules/bolt.md b/.jules/bolt.md
new file mode 100644
index 0000000..47cb3b1
--- /dev/null
+++ b/.jules/bolt.md
@@ -0,0 +1,3 @@
+## 2026-05-03 - Parallelizing Query and Count in Pagination
+**Learning:** In Drizzle ORM applications like this codebase, executing the paginated data fetch and total count queries sequentially creates an unnecessary N+1 pattern that increases request latency.
+**Action:** When implementing paginated endpoints or queries, always batch independent sequential database operations (like data fetch and count) using `Promise.all()` to parallelize execution and minimize round trips.
diff --git a/app/api/products/route.ts b/app/api/products/route.ts
index 953d709..730c920 100644
--- a/app/api/products/route.ts
+++ b/app/api/products/route.ts
@@ -58,19 +58,21 @@ export async function GET(req: NextRequest) {
       conditions.push(eq(products.isFeatured, true));
     }
 
-    const result = await db
-      .select()
-      .from(products)
-      .where(and(...conditions))
-      .orderBy(desc(products.displayOrder), desc(products.createdAt))
-      .limit(limit)
-      .offset(offset);
+    // Parallelize data fetch and total count queries to reduce latency
+    const [result, [{ count }]] = await Promise.all([
+      db
+        .select()
+        .from(products)
+        .where(and(...conditions))
+        .orderBy(desc(products.displayOrder), desc(products.createdAt))
+        .limit(limit)
+        .offset(offset),
 
-    // Get total count for pagination
-    const [{ count }] = await db
-      .select({ count: sql<number>`count(*)` })
-      .from(products)
-      .where(and(...conditions));
+      db
+        .select({ count: sql<number>`count(*)` })
+        .from(products)
+        .where(and(...conditions))
+    ]);
 
     return NextResponse.json({
       products: result,