1. General parameters 2. Automatic cache preloading 3. Lazy loading 4. Minify & group 5. Default values 6. CDN CDN cache Cloudflare cache 7. Import/Export 1. General parameters Speed cache got some settings accessible from the Dashboard > Configuration link The cache life time: Cache life time in minutes. After this delay the cache will be automatically cleared then regenerated Use browser cache: Use browser to cache page content. Increase page speed a lot by caching heavy page content, like images, on your hard drive. It can also be be cleared Cache file per user: A cache file will be created for each user, to be activated if your website require login. Apply only for logged in users and allow to exclude dynamic elements from cache like username The cache file per user needs to be activated every time you plan to activate cache on dynamic content or with user session (login) Clear cache on admin actions: The cache will be deleted on certain actions on Joomla administration: save, apply, publish, unpublish or trash a content Clear cache on front actions: The cache will be deleted on certain actions on Joomla frontend: save, apply, publish, unpublish or trash a content Clear also Joomla's cache: In addition to the SpeedCache cache, the Joomla cache will be cleared too 2. Automatic cache preloading The latest parameters are about the automatic cache regeneration. After being cleared, the cache can be automatically preloaded based on the URL list (require cURL extension to work, usually installed). Token for cache preloading: The token for cache preloading is used to authenticate the request to regenerate cache. You have also the URL you can use with you crontab to reload it regularly. Preload after clearing cache: After being cleared, the cache can be automatically preloaded based the URL list (require cURL extension to work, usually installed). Add Cache-Provider header: it is in response when the response is provided by Speed Cache. It can be used for debugging purposes. Automatic menu to cache: Automatically add new menus to the cached page list. Cache for desktop: Serve the cache for desktop for all devices: Recommended, unless wrong cache version is served Cache for tablet: Serve the cache for tablet: Recommended ONLY if you're experiencing wrong cache version served Cache for mobile: Serve the cache for mobile: Recommended ONLY if you're experiencing wrong cache version served Cache external script: Cache external resources such as script served from Google. Warning: make sure you monitor the performance before and after activation, in some cases, you may experience performance loss when activated! Disable optimization for: Disable cache and optimization system for those user roles (when loggedIn) Clear cache button: Display a clean cache button in the top bar and in the footer bar to clean all the website cache Load module by Ajax: Add an option in every module to activate AJAX loading (asynchrone), to be configured by module. When "Load module by Ajax" is enable, you will see the parameters at Modules > Advanced tab. SpeedCache AJAX loading: Activate the module loading in AJAX (asynchrone) to avoid cache problems with this module AJAX auto refresh: Automatic module AJAX refresh period to avoid cache problems with this module AJAX refresh interval: Select the AJAX refresh interval for this module (minutes) 3. Lazy loading To access Lazy loading , please go to Dashboard > Configuration > Parameter . These contain 2 parameters: Image lazy loading and Iframe & video lazy loading . These features will help you load progressively images, iframes or videos when user scrolls down the page, useful if you have a long page with a bunch of images, iframe or HTML5 videos inside. First, you should enable this parameter, and then you will see these settings below: Exclude image less than (width px): Exclude from image lazy loading all images that have less than this width in pixel value. Useful to exclude small icons or logos Exclude image less than (height px): Exclude from image lazy loading all images that have less than this height in pixel value. Useful to exclude small icons or logos Lazy loading URL inclusion: Include only those URLs for the image lazy loading. You can also include a set of URLs by using rule like: www.website.com/news* Lazy loading URL exclusion: Exclude URLs from the image lazy loading. You can also exclude a set of URLs by using rule like: www.website.com/news* 4. Minify & group From now, to access Minify & Group , you can see it on the Dashboard. Or go to Configuration > Minify & Group tab, then click Group And Minify Setup button. You can go here for more information about the settings. 5. Default values To access Default Values, go to Dashboard > Configuration link. These are the default values that apply to new URL when added to the Speed Cache system. Caching for guest: Caching this URL for guest users Preload for public: Preload this URL for public users Caching for logged in: Caching this URL for logged in users Preload for logged in: Preload this URL for logged in users Preload per user: Preload this URL per user Exclude cache for public: Exclude URL from cache for public users Exclude cache for logged in: Exclude URL from cache for logged in users 6. CDN To access CDN, go to Dashboard > Configuration link. Then you activate CDN, and fill your CDN information here. CDN cache CDN URL: add your CDN URL, without the trailing slash (at the end). CDN Content: Your Joomla content served through CDN resources, separated by comma. Relative path: Enabled by default, Enable/Disable the CDN for relative paths resources. Used for some compatibilities with specific Joomla plugins. Include files: File type to load using the CDN. Cloudflare cache Username: Email address registered to your Cloudflare account. API key: Global Cloudflare API Key, you can generate one from your profile. Domains: This is the domain associated with your Cloudflare account, usually this is this website domain (example: website.com). Custom purge URLs: Any assets in the Cloudflare cache that match the URL(s) exactly will be purged from the cache. Separate URL(s) one per line, can be a page URL or a file URL. 7. Import/Export To access Import/Export, go to Dashboard > Configuration link. Now you can see Import/Export configuration. Website optimization takes time and importing a file to get back all your extension configuration is faster. From here, you can Import or Export a json file.

Speed Cache 设置

1、一般参数

Speed cache可以从仪表板 > 配置链接

缓存有效期：缓存的有效期以分钟为单位。超过此延迟时间后，缓存将自动清除并重新生成。
使用浏览器缓存：使用浏览器缓存页面内容。通过在硬盘驱动器上缓存大量页面内容（例如图像）来大幅提高页面速度。也可以清除
每个用户的缓存文件：将为每个用户创建一个缓存文件，如果您的网站需要登录，则将其激活。仅适用于登录用户并允许从缓存中排除动态元素，例如用户名

每次您计划激活动态内容或用户会话（登录）的缓存时，都需要激活每个用户的缓存文件

清除管理操作的缓存： Joomla 管理的某些操作的缓存将被删除：保存、应用、发布、取消发布或删除内容
清除前端操作的缓存： Joomla 前端的某些操作的缓存将被删除：保存、应用、发布、取消发布或删除内容
也清除 Joomla 的缓存：除了SpeedCache缓存，Joomla 缓存也会被清除

2.自动缓存预加载

最新的参数是关于自动缓存重新生成的。清除后可以根据URL列表自动预加载缓存（需要cURL扩展才能工作，通常安装）。

缓存预加载令牌：缓存预加载令牌用于验证重新生成缓存的请求。您还可以使用此令牌的 URL 到 crontab 中定期重新加载缓存。
清除缓存后预加载：清除缓存后，可以根据 URL 列表自动预加载缓存（需要 cURL 扩展才能工作，通常已安装）。
添加 Cache-Provider 标头：当响应由Speed Cache。它可用于调试目的。
自动菜单缓存：自动将新菜单添加到缓存页面列表中。
桌面缓存：为所有设备提供桌面缓存：推荐，除非提供错误的缓存版本
平板电脑缓存：为平板电脑提供缓存：仅当您遇到错误的缓存版本时才推荐
移动缓存：为移动设备提供缓存：仅当您遇到错误的缓存版本时才推荐
缓存外部脚本：缓存来自 Google 等外部资源的脚本。警告：请务必在启用此功能前后监控性能，在某些情况下，启用后可能会出现性能下降！
禁用优化：禁用这些用户角色的缓存和优化系统（登录时）
清除缓存按钮：在顶部栏和页脚栏中显示清除缓存按钮，以清除所有网站缓存
通过 Ajax 加载模块：在每个模块中添加一个选项来激活 AJAX 加载（异步），该选项由模块进行配置。

“模块”>“高级”选项卡中看到参数

SpeedCache AJAX加载：激活AJAX（异步）中的模块加载，以避免该模块出现缓存问题
AJAX自动刷新：自动模块AJAX刷新周期，以避免该模块出现缓存问题
AJAX刷新间隔：选择该模块的AJAX刷新间隔（分钟）

3. Lazy loading

要访问Lazy loading，请转到仪表板 > 配置 > 参数。这些包含 2 个参数：图像lazy loading和 Iframe 和视频lazy loading。

这些功能将帮助您在用户向下滚动页面时逐步加载图像、iframe 或视频，如果您的页面很长，其中包含大量图像、iframe 或 HTML5 视频，这些功能非常有用。首先，您应该启用此参数，然后您将看到以下这些设置：

排除小于（宽度px）的图片：从lazy loading所有像素值小于此宽度的图片的图片中排除。有助于排除小图标或徽标
排除小于（height px）的图像：从lazy loading所有像素值小于此高度的图像的图像中排除。有助于排除小图标或徽标
Lazy loadingURL 包含：仅包含图像lazy loading 。您还可以使用以下规则包含一组 URL：www.website.com/news*
Lazy loading网址排除：从图像lazy loading排除网址。您还可以使用以下规则来排除一组URL：www.website.com/news*

4.缩小并分组

从现在开始，要访问Minify & Group ，您可以在仪表板上看到它。或转到配置 > 缩小和分组选项卡，然后单击分组和缩小设置按钮。您可以前往此处了解有关设置的更多信息。

5.默认值

要访问默认值，请转到仪表板 > 配置链接。这些是添加到Speed Cache系统时适用于新 URL 的默认值。

缓存访客：为访客用户缓存此 URL
Preload for public：为公共用户预加载此 URL
缓存已登录：为已登录用户缓存此 URL
登录后预加载：为登录用户预加载此 URL
每位用户预加载：每位用户预加载此URL
排除公共缓存：从公共用户缓存中排除URL
排除已登录用户的缓存：从已登录用户的缓存中排除URL

6. CDN

要访问 CDN，请转到“控制面板”>“配置”链接。然后激活 CDN，并在此处填写您的 CDN 信息。

CDN缓存

CDN URL：添加您的 CDN URL，无需添加末尾的斜杠。
CDN 内容：您的 Joomla 内容通过 CDN 资源提供，以逗号分隔。
相对路径：默认启用，为相对路径资源启用/禁用CDN。用于与特定的Joomla插件兼容。
包含文件：要使用 CDN 加载的文件类型。

Cloudflare缓存

用户名：注册到您的 Cloudflare 帐户的电子邮件地址。
API密钥：全球Cloudflare API密钥，您可以从您的个人资料中生成一个。
域名：这是与您的 Cloudflare 帐户关联的域名，通常是此网站域名（例如：website.com）。
自定义清除 URL： Cloudflare 缓存中所有与指定 URL 完全匹配的资源都将被清除。每个 URL 单独一行，可以是页面 URL 或文件 URL。

7. 进出口

要访问导入/导出功能，请转到“控制面板”>“配置”链接。现在您可以看到导入/导出配置。

网站优化需要时间，导入文件来恢复所有扩展配置会更快。从这里，您可以导入或导出 json 文件。