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perf(2meet-data-optimizer): flush the cold cache group without a server-side scan

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- TMDO_Cache_Layer::flush_group() bumps the post type's cold cache version
  (option wpdo_cold_cache_version) instead of wp_cache_flush_group(), which
  Redis Object Cache runs as one server-side scan that blocks Redis on a large
  group; entries under older keys expire by their TTL
- TMDO_Zone_Cold::cache_key() builds every cold blob key; version 0 keeps the
  current keys, so upgrading invalidates nothing
- Verify: CacheLayerTest (new keys, no scan, other post types untouched),
  unit 702, integration 583, phpcs, stan
- PR: PR-110
This commit is contained in:
wpdev
2026-09-27 17:12:14 +08:00
parent 06a3594417
commit eb1c8b78f4
3 changed files with 54 additions and 17 deletions
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includes/zones/class-tmdo-zone-cold.php
+23 -5
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@@ -25,6 +25,9 @@ if ( ! defined( 'ABSPATH' ) ) {
*/
class TMDO_Zone_Cold {
/** Option: post type → cold cache version (TMDO_Cache_Layer::flush_group()). */
public const CACHE_VERSION_OPTION = 'wpdo_cold_cache_version';
/**
* Get the cold table name for a post type.
*
@@ -45,6 +48,21 @@ class TMDO_Zone_Cold {
return 'wpdo_cold_' . sanitize_key( $post_type );
}
/**
* Object-cache key of a post's cold blob. It carries the post type's cache
* version once TMDO_Cache_Layer::flush_group() has bumped it (none before,
* so existing entries keep their keys).
*
* @param int $post_id Post ID.
* @param string $post_type Post type slug.
* @return string
*/
public static function cache_key( int $post_id, string $post_type ): string {
$versions = get_option( self::CACHE_VERSION_OPTION, array() );
$version = is_array( $versions ) ? (int) ( $versions[ $post_type ] ?? 0 ) : 0;
return $version ? "cold_{$post_id}_v{$version}" : "cold_{$post_id}";
}
/**
* Ensure the cold table exists for a post type.
*
@@ -92,7 +110,7 @@ class TMDO_Zone_Cold {
*/
public static function get_blob( int $post_id, string $post_type ): array {
$group = self::cache_group( $post_type );
$cache_key = "cold_{$post_id}";
$cache_key = self::cache_key( $post_id, $post_type );
$cached = wp_cache_get( $cache_key, $group );
if ( false !== $cached ) {
@@ -202,7 +220,7 @@ class TMDO_Zone_Cold {
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
wp_cache_delete( "cold_{$post_id}", self::cache_group( $post_type ) );
wp_cache_delete( self::cache_key( $post_id, $post_type ), self::cache_group( $post_type ) );
}
/**
@@ -215,7 +233,7 @@ class TMDO_Zone_Cold {
public static function delete( int $post_id, string $post_type ): void {
global $wpdb;
$wpdb->delete( self::table( $post_type ), array( 'post_id' => $post_id ), array( '%d' ) );
wp_cache_delete( "cold_{$post_id}", self::cache_group( $post_type ) );
wp_cache_delete( self::cache_key( $post_id, $post_type ), self::cache_group( $post_type ) );
}
// ── Private helpers ───────────────────────────────────────────────────
@@ -264,7 +282,7 @@ class TMDO_Zone_Cold {
);
// Invalidate object cache.
wp_cache_delete( "cold_{$post_id}", self::cache_group( $post_type ) );
wp_cache_delete( self::cache_key( $post_id, $post_type ), self::cache_group( $post_type ) );
}
/**
@@ -305,6 +323,6 @@ class TMDO_Zone_Cold {
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
wp_cache_delete( "cold_{$post_id}", self::cache_group( $post_type ) );
wp_cache_delete( self::cache_key( $post_id, $post_type ), self::cache_group( $post_type ) );
}
}