Steps to reduce SSR To Full Load
Hi,
My Nuxt 3 website has a 2 to 3s SSR to full load, and I’m not sure where to look to understand which elements are causing this.
Using Nuxt DevTools, which part should I focus on to identify the components causing such a delay?
My homepage is quite heavy on Apollo/GraphQL calls, but in terms of milliseconds, it’s almost negligible.
Looking at my server hooks, I see a rather large "build" part (1,7 seconds) , but it’s still too vague for me to understand.
Could you suggest some directions to look at?
My config:
{
"name": "nuxt-app",
"private": true,
"type": "module",
"scripts": {
"build": "nuxt build",
"dev": "nuxt dev",
"start": "node .output/server/index.mjs",
"generate": "nuxt generate",
"preview": "nuxt preview",
"postinstall": "nuxt prepare"
},
"dependencies": {
"@nuxtjs/fontaine": "^0.4.3",
"@nuxtjs/google-fonts": "^3.2.0",
"@nuxtjs/i18n": "^8.5.5",
"@nuxtjs/robots": "^4.0.2",
"@nuxtjs/seo": "^2.0.0-rc.18",
"@nuxtjs/sitemap": "^6.0.0-beta.1",
"@pinia/nuxt": "^0.5.1",
"@vueuse/components": "^10.11.0",
"@vueuse/core": "^10.11.0",
"@vueuse/nuxt": "^10.11.0",
"@yeger/vue-masonry-wall": "^5.0.12",
"graphql-tag": "^2.12.6",
"gsap": "npm:@gsap/shockingly@^3.12.5",
"nuxt": "^3.12.3",
"nuxt-easy-lightbox": "^1.0.2",
"nuxt-swiper": "^1.2.2",
"pinia": "^2.1.7",
"vue": "^3.4.31"
},
"devDependencies": {
"@nuxtjs/apollo": "^5.0.0-alpha.14",
"@nuxtjs/tailwindcss": "^6.12.1"
}
}3 Replies
Hi @João Jack. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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To help reduce the SSR to full load time for your Nuxt 3 website, here are some directions you can look into using the Nuxt DevTools:
1. Components Tab:
Focus on the Components tab in Nuxt DevTools to identify which components are taking the longest to render. Look for components with high render times or those that are deeply nested. You can use the Graph view to visualize component relationships and dependencies Nuxt DevTools Features (https://devtools.nuxt.com/guide/features).
2. Imports Tab:
Check the Imports tab to see if there are any unnecessary or large imports that could be optimized or lazy-loaded. This can help reduce the initial bundle size Nuxt DevTools Features (https://devtools.nuxt.com/guide/features).
3. Payload Tab:
Examine the Payload tab to see the size of your state and data payloads. Large payloads can significantly impact load times. Look for ways to reduce the initial payload size, such as:
- Only sending necessary data
- Implementing pagination for large datasets
- Using lazy-loading techniques for non-critical data
Nuxt DevTools Features (https://devtools.nuxt.com/guide/features)
4. Runtime Config Tab:
Review your runtime config in the Runtime Config tab. Ensure that you're not including unnecessary configuration that could be slowing down the initial load Nuxt DevTools Features (https://devtools.nuxt.com/guide/features).
5. Apollo/GraphQL Optimization:
Although you mentioned the Apollo/GraphQL calls seem negligible in terms of milliseconds, it's worth double-checking if there are any opportunities for optimization:
- Ensure you're only requesting the necessary fields
- Consider implementing query batching if you're making multiple queries
- Use pagination for large datasets
6. Route Rules:
Implement route rules to optimize specific pages. For example, you could use the
ssr: false rule for pages that don't require server-side rendering, or implement caching strategies for pages with static content Nuxt 3 Route Rules (https://www.youtube.com/watch?v=Fp04Kw4nBE8).
7. Analyze Build Output:
The large "build" part you're seeing in the server hooks (1.7 seconds) could be related to the complexity of your application or the number of dependencies. Consider using the analyze command to visualize your bundle and identify large dependencies that could be optimized or lazy-loaded.
8. Performance Optimization:
Watch this video on Nuxt 3 performance optimization for additional tips on reducing payload size and improving load times: Nuxt 3 Performance Optimization (https://www.youtube.com/watch?v=laRJNkG_wls).
Remember, performance optimization is often an iterative process. Start by focusing on the most significant bottlenecks identified in the Nuxt DevTools, and gradually work your way through smaller optimizations.
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7. how do you lazy load a dependency ? @kapa.ai