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<title>[56522] trunk/src/wp-includes/functions.php: Database: Add expiration for `dirsize_cache` to transient to improve performance.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/56522">56522</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/56522","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>spacedmonkey</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2023-09-06 10:01:39 +0000 (Wed, 06 Sep 2023)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Database: Add expiration for `dirsize_cache` to transient to improve performance.
The transient `dirsize_cache` stores an array of directory sizes. This transient can grow very large, if the plugin directory has lots of sub directories in it. For example, a site with 30 plugins, the transient was around 2MB. For sites without a persistent object cache, transients without an expiration, are stored in autoloaded options. This means this option would load on every page request. Loading this option on every page request when it is not used it wasteful. Adding a expiration to this transient means it will not autoload. To ensure there is no degradation in performance, the expiration was set to a generous 10-year timeframe, making it highly unlikely to expire before it's refreshed.
Props nicomollet, spacedmonkey, flixos90, wpgurudev.
Fixes <a href="https://core.trac.wordpress.org/ticket/54221">#54221</a>.</pre>
<h3>Modified Paths</h3>
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<li><a href="#trunksrcwpincludesfunctionsphp">trunk/src/wp-includes/functions.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludesfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/functions.php 2023-09-06 09:31:48 UTC (rev 56521)
+++ trunk/src/wp-includes/functions.php 2023-09-06 10:01:39 UTC (rev 56522)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -8600,7 +8600,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // Only write the transient on the top level call and not on recursive calls.
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $save_cache ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- set_transient( 'dirsize_cache', $directory_cache );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $expiration = ( wp_using_ext_object_cache() ) ? 0 : 10 * YEAR_IN_SECONDS;
+ set_transient( 'dirsize_cache', $directory_cache, $expiration );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> return $size;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -8635,12 +8636,13 @@
</span><span class="cx" style="display: block; padding: 0 10px"> return;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $expiration = ( wp_using_ext_object_cache() ) ? 0 : 10 * YEAR_IN_SECONDS;
</ins><span class="cx" style="display: block; padding: 0 10px"> if (
</span><span class="cx" style="display: block; padding: 0 10px"> ! str_contains( $path, '/' ) &&
</span><span class="cx" style="display: block; padding: 0 10px"> ! str_contains( $path, '\\' )
</span><span class="cx" style="display: block; padding: 0 10px"> ) {
</span><span class="cx" style="display: block; padding: 0 10px"> unset( $directory_cache[ $path ] );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- set_transient( 'dirsize_cache', $directory_cache );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ set_transient( 'dirsize_cache', $directory_cache, $expiration );
</ins><span class="cx" style="display: block; padding: 0 10px"> return;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -8659,7 +8661,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> unset( $directory_cache[ $path ] );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- set_transient( 'dirsize_cache', $directory_cache );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ set_transient( 'dirsize_cache', $directory_cache, $expiration );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span></span></pre>
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