← Back to Blog

Faster by Design: How We Approach Web Performance Optimization

Performance
Faster by Design: How We Approach Web Performance Optimization

Speed is not a finishing touch. It is a feature your visitors judge you on before they read a single word. Research consistently shows that a page taking longer than three seconds to become usable loses a meaningful share of its audience, and search engines now bake responsiveness metrics directly into ranking signals. At TCCB Solutions we treat performance as an architectural decision rather than a cleanup task, and over the years we have settled on a repeatable approach we would like to share.

Measure Before You Optimise

The single most common mistake we see is guessing. A team spends a week minifying JavaScript when the real problem was a 4 MB hero image or an unindexed database query. Before we change anything, we take a baseline against the Core Web Vitals:

Lighthouse and WebPageTest are our starting points, but we always pair lab numbers with real-user monitoring. Your visitors are not all on fibre broadband and a recent laptop, and lab tests flatter you in ways real traffic never will.

Ship Less, and Ship It Later

The fastest asset is the one you never send. We audit every dependency and ask whether it earns its transfer cost. A date-formatting library weighing 70 KB to render 20 July 2026 rarely does. Beyond trimming, the biggest wins usually come from deferring work that is not needed for the first paint.

Images are almost always the heaviest part of a page, and modern HTML gives us everything we need to handle them well:

<img
  src="/img/hero-800.avif"
  srcset="/img/hero-400.avif 400w,
          /img/hero-800.avif 800w,
          /img/hero-1600.avif 1600w"
  sizes="(max-width: 600px) 100vw, 800px"
  width="800" height="450"
  loading="lazy" decoding="async"
  alt="Team reviewing a dashboard">

Three things are happening there. The browser picks the smallest file that suits the device, AVIF or WebP cuts the payload by 30–60% against JPEG, and the explicit width and height reserve space so nothing shifts as the image arrives. That last detail alone often fixes a poor CLS score.

The same principle applies to scripts. Use defer for anything that is not needed to render, and load genuinely optional features on demand:

const btn = document.querySelector('#open-editor');
btn.addEventListener('click', async () => {
  const { mountEditor } = await import('./editor.js');
  mountEditor();
});

Cache at Every Layer

Caching is where a good site becomes a fast one, and it works best in layers. We think of it as four tiers, each catching what the one below it missed.

A typical nginx block for the first tier looks like this:

location ~* \.(?:css|js|woff2|avif|webp)$ {
    add_header Cache-Control "public, max-age=31536000, immutable";
    access_log off;
}

location / {
    add_header Cache-Control "public, max-age=60, stale-while-revalidate=600";
}

Efficient Code on the Server

Front-end tuning cannot rescue a slow backend. The classic offender is the N+1 query — fetching a list, then firing one more query per row. Eager-loading the relationship turns 101 round trips into two:

// Slow: one query per post to fetch its author
$posts = Post::all();

// Fast: two queries total
$posts = Post::with('author')->get();

Alongside that, we index the columns that actually appear in WHERE and JOIN clauses, enable Brotli or gzip compression, keep HTTP/2 or HTTP/3 turned on, and move anything slow — emails, thumbnails, third-party API calls — into a background queue so the user is never waiting on it.

Keep It Fast

Performance regresses quietly. A new tracking pixel here, an unoptimised upload there, and six months later you are back where you started. We build performance budgets into CI so a build fails when the bundle grows past an agreed threshold, and we review real-user metrics on a regular cadence rather than only when someone complains.

None of this is exotic. It is a handful of disciplined habits applied consistently, and the payoff shows up in conversion rates, search visibility, and hosting costs alike.

If your site feels sluggish and you are not sure where the time is going, we are happy to take a look and give you a clear picture of what would move the needle. Get in touch with us and let's talk it through.