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lavoiesl/index.php

Last active December 29, 2020 09:10
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index.php
<?php
header('Cache-Control: private');
header('Pragma: no-cache');
# Activate ESI processing
header('X-Esi: 1');
?>
<!doctype html>
<html>
<head><title>Varnish test</title></head>
<body>
<p>This should NOT be cached:</p>
<pre>
Cookies: <?php print_r($_COOKIE); ?>
Timestamp: <?php echo microtime(true); ?>
</pre>
<hr>
<p>This should be cached:</p>
<esi:include src="partial.php" />
<hr>
<p>This should be cached, but only if no Cookies are set:</p>
<esi:include src="partial.php?esi-cookies=1" />
</body>
</html>
Raw
partial.php
<?php
# This file is slow to generate and can be cached
# Shared cache only (Varnish)
header('Cache-Control: shared, smax-age=30');
?>
<pre>
Cookies: <?php print_r($_COOKIE); ?>
Timestamp: <?php echo microtime(true); ?>
</pre>
Raw
varnish.vcl
sub vcl_recv {
if (req.esi_level > 0) {
# Backend may want to treat this request differently
set req.http.X-Esi-Level = req.esi_level;
if (req.url !~ "esi-cookies=1") {
unset req.http.cookie;
}
} else {
unset req.http.X-Esi-Level; # remove for security
}
}
sub vcl_fetch {
# Activate Edge Side Includes, but only if X-Esi header is present
if (beresp.http.X-Esi) {
set beresp.do_esi = true;
unset beresp.http.X-Esi; # remove header
}
}
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