1737979815

How to improve the performance of a website to load in less than 1 second


Improving your website's performance to load in less than 1 second requires optimizations at multiple levels: server-side, front-end, and network performance. ## <br>1. Optimize Server Performance **Use a Fast Hosting Provider** - Choose a high-performance hosting provider with low TTFB (Time to First Byte). - Use dedicated servers, VPS, or managed hosting (e.g., Vercel, Cloudflare Pages). - Consider serverless computing for static content. **Enable Caching** - Server-side caching: Use Redis, Memcached for database queries and sessions. - Full-page caching: Use NGINX FastCGI cache, Varnish, or Cloudflare Cache. - Object caching: Store frequently requested objects in memory. **Use a CDN (Content Delivery Network)** - Distribute content globally using a CDN (e.g., Cloudflare, Fastly, Akamai). - Cache static assets like images, CSS, JavaScript. **Optimize Database Queries** - Use indexes for faster lookups. - Optimize SQL queries (e.g., avoid `SELECT *`, use `JOINs` efficiently). - Enable query caching. ## <br>2. Optimize Front-End Performance **Minimize HTTP Requests** - Combine CSS and JavaScript files (use tools like Webpack, Parcel). - Use inline CSS for critical styles. **Lazy Load Resources** - Load images, videos, and iframes only when needed (use loading="lazy"). - Load JavaScript asynchronously (async or defer attributes). **Optimize Images & Videos** - Use modern formats: WebP, AVIF (instead of PNG, JPEG). - Compress images using TinyPNG, ImageOptim. - Use responsive images (<picture> with srcset). **Reduce JavaScript Execution Time** - Remove unused JavaScript (tree shaking). - Use lighter JS frameworks (or vanilla JS if possible). - Minimize third-party scripts (e.g., Google Fonts, Analytics). **Use Efficient CSS** - Remove unused CSS (use PurgeCSS, Tailwind’s JIT mode). - Use CSS instead of JavaScript for animations. - Avoid blocking CSS by inlining critical CSS. ## <br>3. Improve Network Performance **Enable Compression** - Use Gzip or Brotli compression for HTML, CSS, and JS. **Use HTTP/2 or HTTP/3** - These protocols allow multiplexing and reduce request overhead. **Reduce DNS Lookups** - Use fast DNS providers (e.g., Cloudflare DNS, Google DNS). **Enable Keep-Alive & Prefetching** - Use Connection Keep-Alive to reuse TCP connections. - Use Preload, Prefetch, and Preconnect for assets. ## <br>4. Monitor and Test Performance - Use Google Lighthouse, WebPageTest, PageSpeed Insights to measure speed. - Use Real User Monitoring (RUM) with Cloudflare or New Relic. 💡 **Quick Wins for <1s Load Time** ✅ Use a CDN ✅ Optimize images & lazy load ✅ Minimize JavaScript & CSS ✅ Enable caching (server + browser) ✅ Use HTTP/2 or HTTP/3 ✅ Reduce third-party scripts ✅ Use fast hosting + database optimizations This content is aimed at both programmers who are at the beginning of their careers and those who are already advanced and have little to do with the performance of their sites. Join our community to help us grow.

(4) Comments
fschmidt
fschmidt
1738013510

Before responding, I will quote Knuth: "Premature optimization is the root of all evil." <br><br> Server-side caching and object caching are not needed if you use a sane database that is in-process and uses memory-mapped IO. I use Lucene. <br><br> For page caching, avoid all modern crap including FastCGI. Just use NGINX as a reverse proxy and have it cache. This uses old protocols, not modern crap. <br><br> CDNs are pain in the ass. Avoid them. Make most of your CSS and Javascript static files so they get cached in the user's browser. This puts most of the overhead in the first page load by the user. After that, most stuff will be cached in the user's browser. <br><br> Do not combine CSS and JavaScript files. Do not compress CSS or JavaScript because this makes debugging harder. These files uncompressed are still trivial for the browser to cache. And compression has no real effect on performance because throughput is high on the modern internet, the issue is latency. <br><br> Do not use Javascript frameworks. They all suck. Write your own Javascript. Then you can more easily fix Javascript performance issues. <br><br> Do not inline more than a trivial amount of CSS. Most pages are dynamic, so are reloaded every time. CSS files are cached. <br><br> The DNS provider doesn't matter. DNS is cached. <br><br> Have Nginx handle compression and the horrible modern protocols.

amargo85
amargo85
1738017443

so you agree that between apche and Nginx, Nginx is better in terms of performance?

fschmidt
fschmidt
1738024177

That's what I heard, but I haven't tested it. I like Nginx because it is simpler, but to be honest I have my sysadmin mostly deal with it.

amargo85
amargo85
1738064419

I'll have to try it out and I'll post what I thought of it here. But I'll definitely be using it with [Node.js](https://chat-to.dev/search?p=node.js)


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