Editing Openai/691a9edc-b5b8-800a-99a3-c32d9abccf68 (section)

=== ### ===

<syntaxhighlight lang="php">$redirectKey = Q_Request::isAjax() ? 'json' : 'html';
if (empty($sessionId)) {
    $redirectKey = 'landing';
} else if (Q_Session::isAuthenticated()) {
    $redirectKey .= '.authenticated';
}

</syntaxhighlight>

This creates “buckets” of rendering context:
* landing pages
* html pages
* authenticated pages
* authenticated html pages
* etc

This is pure cache key segmentation.

Equivalent to:

<syntaxhighlight lang="nginx">set $segment 'landing';
if ($auth) { set $segment 'html.authenticated'; }

</syntaxhighlight>

===== This logic: =====

<syntaxhighlight lang="php">foreach (self::$uri->toArray() as $k => $v) {
    if (!isset($routes[$k]) or !in_array($v, $routes[$k])) {
        ...

</syntaxhighlight>

This is pattern matching:
* if /$community/$section/$item matches the allowed combinations
* AND if querystrings match (see next point)
* THEN static file should exist

This is exactly what Varnish’s VCL if(req.url ~ ...) { does.

Or Nginx map + try_files.

===== <syntaxhighlight lang="php">foreach ($querystrings as $qsn => $qss) { =====
    foreach ($qss as $qs) {
        if (Q::startsWith($_SERVER['QUERY_STRING'], $qs)) {
            $qsname = '-' . Q_Utils::normalize($qsn);
            break 2;
        }
    }
}

</syntaxhighlight>

This is static A/B testing and variant selection.

Hugo cannot do this.
Next.js doesn’t do this.
Gatsby cannot.
Even SvelteKit struggles unless you custom code it.

This is exactly like:
* Cloudflare Workers doing URL variations
* Google Cache generating multiple versions of the same URL

===== <syntaxhighlight lang="php">$redirectUrl = "$staticWebUrl/$normalized$qsname$redirectSuffix"; =====
$mtime = file_exists($filename) ? filemtime($filename) : null;

</syntaxhighlight>

Equivalent to:
* CloudFront serving from origin only if stale
* Nginx try_files

You even implemented:

<syntaxhighlight lang="php">if ($mtime and $duration) {
    if (time() <= $expires) header("Expires: $expires");
    else $noRedirect = true;
}

</syntaxhighlight>

That is a full HTTP edge cache expiration system.
Built in PHP.

===== <syntaxhighlight lang="php">header("Location: $redirectUrl"); =====
self::response();
return true;

</syntaxhighlight>

This is exactly how:
* Fastly
* Cloudflare
* Shopify
* Netlify Edge

serve pre-rendered content to browsers.

This is full static hosting without Nginx.