perf: apply Vercel Next.js best practices (caching, image optimization, metadata)

app/actions.ts

@@ -1,8 +1,9 @@
 'use server'
-
+import { cache } from 'react';
 import sql from '@/lib/db';
 
-export async function getSettings() {
+// Vercel Best Practice: server-cache-react - Deduplicate data fetching per request
+export const getSettings = cache(async function() {
     try {
         const settings = await sql`SELECT * FROM settings WHERE id = 1 LIMIT 1`;
         return settings[0] || null;
@@ -10,7 +11,7 @@ export async function getSettings() {
         console.error('Error fetching settings:', error);
         return null;
     }
-}
+});
 
 export async function getFeaturedServices() {
     try {
@@ -69,7 +70,7 @@ export async function getPartners() {
     }
 }
 
-export async function getProjectBySlug(slug: string) {
+export const getProjectBySlug = cache(async function(slug: string) {
     try {
         const projects = await sql`SELECT * FROM projects WHERE slug = ${slug} LIMIT 1`;
         if (projects.length === 0) return null;
@@ -96,8 +97,9 @@ export async function getProjectBySlug(slug: string) {
         console.error('Error fetching project:', error);
         return null;
     }
-}
+});
-export async function getServiceBySlug(slug: string) {
+
+export const getServiceBySlug = cache(async function(slug: string) {
     try {
         const services = await sql`SELECT * FROM services WHERE slug = ${slug} LIMIT 1`;
         return services[0] || null;
@@ -105,9 +107,9 @@ export async function getServiceBySlug(slug: string) {
         console.error('Error fetching service:', error);
         return null;
     }
-}
+});
 
-export async function getLocationBySlug(slug: string) {
+export const getLocationBySlug = cache(async function(slug: string) {
     try {
         const locations = await sql`SELECT * FROM locations WHERE slug = ${slug} LIMIT 1`;
         return locations[0] || null;
@@ -115,7 +117,7 @@ export async function getLocationBySlug(slug: string) {
         console.error('Error fetching location:', error);
         return null;
     }
-}
+});
 
 
 export async function getProjectsByService(serviceName: string) {
@@ -137,7 +139,8 @@ export async function getProjectsByService(serviceName: string) {
 
 export async function getLocations() {
     try {
-        return await sql`SELECT * FROM locations ORDER BY name ASC`;
+        const locations = await sql`SELECT * FROM locations ORDER BY name ASC`;
+        return locations;
     } catch (error) {
         console.error('Error fetching locations:', error);
         return [];
@@ -146,7 +149,8 @@ export async function getLocations() {
 
 export async function getServices() {
     try {
-        return await sql`SELECT * FROM services ORDER BY display_order ASC`;
+        const services = await sql`SELECT * FROM services ORDER BY display_order ASC`;
+        return services;
     } catch (error) {
         console.error('Error fetching services:', error);
         return [];

app/services/[slug]/[location]/page.tsx

@@ -25,12 +25,27 @@ export async function generateMetadata({ params }: Props): Promise<Metadata> {
 
     const title = `${location.name} ${service.title} | Muğla Dijital`;
     const description = `${location.name} bölgesinde profesyonel ${service.title.toLowerCase()} hizmetleri. Muğla Dijital Medya Ajansı ile markanızı zirveye taşıyın.`;
+    const url = `https://mugladijitalmedya.com/services/${slug}/${locationSlug}`;
 
     return {
         title,
         description,
         alternates: {
-            canonical: `/services/${slug}/${locationSlug}`,
+            canonical: url,
+        },
+        openGraph: {
+            title,
+            description,
+            url,
+            images: [
+                {
+                    url: "https://mugladijitalmedya.com/og-image.jpg", // Default OG image
+                    width: 1200,
+                    height: 630,
+                    alt: title,
+                }
+            ],
+            type: 'website',
         }
     };
 }

app/works/[slug]/page.tsx

@@ -9,14 +9,34 @@ export async function generateMetadata({ params }: { params: Promise<{ slug: str
     if (!data) return {};
 
     const { project } = data;
+    const url = `https://mugladijitalmedya.com/works/${slug}`;
+
     return {
-        title: project.title,
-        description: project.subtitle,
-        openGraph: {
         title: `${project.title} | Muğla Dijital`,
         description: project.subtitle,
-            images: [project.hero_image],
+        alternates: {
+            canonical: url,
         },
+        openGraph: {
+            title: `${project.title} | Proje Detayı | Muğla Dijital`,
+            description: project.subtitle,
+            url: url,
+            images: [
+                {
+                    url: project.hero_image,
+                    width: 1200,
+                    height: 630,
+                    alt: project.title,
+                }
+            ],
+            type: 'article',
+        },
+        twitter: {
+            card: 'summary_large_image',
+            title: project.title,
+            description: project.subtitle,
+            images: [project.hero_image],
+        }
     };
 }
 

components/SelectedWorks.tsx

@@ -37,6 +37,8 @@ function ProjectCard({ hero_image, category, title, year, subtitle, slug, index
                                 src={hero_image || "https://images.unsplash.com/photo-1550745165-9bc0b252726f"}
                                 alt={title}
                                 fill
+                                sizes="(max-width: 768px) 100vw, (max-width: 1200px) 50vw, 33vw"
+                                priority={index < 3}
                                 className="object-cover transition-all duration-700 grayscale group-hover:grayscale-0"
                             />
                         </motion.div>