Title: APC Object Cache Backend Author: Mark Jaquith Published: 2010 年 8 月 4 日 Last modified: 2020 年 5 月 4 日 --- 搜尋外掛 這個外掛**並未在最新的 3 個 WordPress 主要版本上進行測試**。開發者可能不再對這個 外掛進行維護或提供技術支援，並可能會與更新版本的 WordPress 產生使用上的相容性問題。 ![](https://s.w.org/plugins/geopattern-icon/apc.svg) # APC Object Cache Backend 由 [Mark Jaquith](https://profiles.wordpress.org/markjaquith/) 開發 [下載](https://downloads.wordpress.org/plugin/apc.2.0.7.zip) * [詳細資料](https://tw.wordpress.org/plugins/apc/#description) * [使用者評論](https://tw.wordpress.org/plugins/apc/#reviews) * [安裝方式](https://tw.wordpress.org/plugins/apc/#installation) * [開發資訊](https://tw.wordpress.org/plugins/apc/#developers) [技術支援](https://wordpress.org/support/plugin/apc/) ## 外掛說明 APC Object Cache provides a persistent memory-based backend for the WordPress object cache. APC must be available on your PHP install. An object cache is a place for WordPress and WordPress extensions to store the results of complex operations. On subsequent loads, this data can be fetched from the cache, which will be must faster than dynamically generating it on every page load. The APC Object Cache backend is also compatible with [Batcache](https://wordpress.org/extend/plugins/batcache/), the powerful full page caching engine that runs on WordPress.com Be sure to read the installation instructions, as this is **not** a traditional plugin, and needs to be installed in a specific location. ## 安裝方式 1. Verify that you have PHP 5.2.4+ and a compatible APC version installed. 2. Copy `object-cache.php` to your WordPress content directory (`wp-content/` by default). 3. Done! ## 常見問題集 Does this work as a backend for Batcache? Yes! APC 3.1.1+ supports incrementers and handles its own cleanup of expired objects, so it works just fine for Batcache. Lower versions of APC will work, but the hits trigger will be disabled. Does this support versions of WordPress earlier than 3.3? Maybe, but I’m not going to support them, and you shouldn’t still be running them! I share `wp-config.php` among multiple WordPress installs. How can I guarantee key uniqueness? Define `WP_APC_KEY_SALT` to something that is unique for each install (like an md5 of the MySQL host, database, and table prefix). ## 使用者評論 ![](https://secure.gravatar.com/avatar/85f1e397187c7681514f0f4b99c8aa6e022b062b24575cbdc10652e02d82caa2? s=60&d=retro&r=g) ### 󠀁[Very good](https://wordpress.org/support/topic/very-good-2530/)󠁿 [Grzegorz.Janoszka](https://profiles.wordpress.org/grzegorzjanoszka/) 2017 年 9 月 7 日 It reduces the number of sql queries by about half and thus reduces the server load. Highly recommended if you have the correct PHP APC modules. ![](https://secure.gravatar.com/avatar/f3fbec49f0e9d50e5ea6258a9f7c79253ae512019efa10d7565b5737594f3376? s=60&d=retro&r=g) ### 󠀁[greatly speed up WordPress](https://wordpress.org/support/topic/greatly-speed-up-wordpress/)󠁿 [Vinyl Roads](https://profiles.wordpress.org/vinyl-roads/) 2016 年 9 月 3 日 Easy to install. Boost website (APC totally eliminates the time of retrieving the file from disk and the time spent compiling). ![](https://secure.gravatar.com/avatar/97bbe4fe76251bd8de789468d4e055a2a38da2615beb64caba53e5aff6c24084? s=60&d=retro&r=g) ### 󠀁[Excelente Five Stars- Extra Performance](https://wordpress.org/support/topic/excelente-five-stars-extra-performance-2/)󠁿 [General Seed](https://profiles.wordpress.org/autocultivo/) 2017 年 2 月 7 日 Works fine, thanks for it Merry Christmas [ 閱讀全部 14 則使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/) ## 參與者及開發者 以下人員參與了開源軟體〈APC Object Cache Backend〉的開發相關工作。 參與者 * [ Mark Jaquith ](https://profiles.wordpress.org/markjaquith/) [將〈APC Object Cache Backend〉外掛本地化為台灣繁體中文版](https://translate.wordpress.org/projects/wp-plugins/apc) ### 對開發相關資訊感興趣？ 任何人均可[瀏覽程式碼](https://plugins.trac.wordpress.org/browser/apc/)、查看 [SVN 存放庫](https://plugins.svn.wordpress.org/apc/)， 或透過 [RSS](https://plugins.trac.wordpress.org/log/apc/?limit=100&mode=stop_on_copy&format=rss) 訂閱[開發記錄](https://plugins.trac.wordpress.org/log/apc/)。 ## 變更記錄 #### 2.0.7 * Address potential XSS issues #### 2.0.6 * Fixed a PHP notice #### 2.0.5 * Implements `wp_cache_switch_to_blog()` * Degrades to the built-in PHP-memory cache when APC is not available (now plays with WP-CLI) * Clone objects before storing them to the local cache, so changes to them don’t corrupt the cache * Clear the local PHP memory cache when the APC cache is cleared #### 2.0.4 * `die()` when people mistakenly try to activate this as a plugin, and provide a helpful message for where they should move the file #### 2.0.3 * Parity with the Memcache backend, as much as was possible * Object cloning * Requires WP 3.1+ * Fix double-equals vs triple-equals bug with boolean true values #### 2.0.2 * Perform the `md5( ABSPATH )` calculation once per load (props jdub) * Allow users of complex `wp-config.php` setups to define `WP_APC_KEY_SALT` to guarantee key uniqueness (props jdub) * Lose the `preg_replace()` call in `::key()` (props jdub) * Rename the `incr` method to `incr2` and then conditionally add `incr` via class extension (so that Batcache can properly detect incrementor support) * Convert arrays to ArrayObject objects (APC does not cache multi-level arrays or arrays of objects, so this works around that) * Require PHP 5.2+ #### 2.0.1 * Fixed bugs in wp_cache_delete() #### 2.0 * First version in SVN * Updated to support increment/decrement and feature parity with the Memcached backend (except for multiget support) ## 中繼資料 * 版本 **2.0.7** * 最後更新 **6 年前** * 啟用安裝數 **10+** * WordPress 版本需求 ** 3.3 或更新版本 ** * 已測試相容的 WordPress 版本 **3.5.2** * 語言 * [English (US)](https://wordpress.org/plugins/apc/) * 標籤: * [apc](https://tw.wordpress.org/plugins/tags/apc/)[backend](https://tw.wordpress.org/plugins/tags/backend/) [cache](https://tw.wordpress.org/plugins/tags/cache/)[object cache](https://tw.wordpress.org/plugins/tags/object-cache/) [performance](https://tw.wordpress.org/plugins/tags/performance/) * [進階檢視](https://tw.wordpress.org/plugins/apc/advanced/) ## 評分 5 星，滿分為 5 星 * [ 14 個 5 星使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/?filter=5) * [ 0 個 4 星使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/?filter=4) * [ 0 個 3 星使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/?filter=3) * [ 0 個 2 星使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/?filter=2) * [ 0 個 1 星使用者評論 ](https://wordpress.org/support/plugin/apc/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/apc/reviews/#new-post) [查看全部使用者評論](https://wordpress.org/support/plugin/apc/reviews/) ## 參與者 * [ Mark Jaquith ](https://profiles.wordpress.org/markjaquith/) ## 技術支援 使用者可在技術支援論壇提出意見反應或使用問題。 [檢視技術支援論壇](https://wordpress.org/support/plugin/apc/) ## 贊助 想要支援這個外掛的發展嗎？ [ 贊助這個外掛 ](https://txfx.net/wordpress-plugins/donate)