如何设置HTTP标头（用于缓存控制）？ [英] How to set HTTP headers (for cache-control)?
问题描述
如何为我的网站启用浏览器缓存？我只是将cache-control：public放在我的标题中的某个地方吗？
How to enable browser caching for my site? Do I just put cache-control:public somewhere up in my header like this?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
Cache-Control:public;
>
我在最新版本的XAMPP上使用最新版本的PHP开发。
I am using the latest version of PHP developing on the latest version of XAMPP.
推荐答案
要在HTML中使用缓存控制，请使用元标记，例如
To use cache-control in HTML, you use the meta tag, e.g.
<meta http-equiv="Cache-control" content="public">
内容字段中的值定义为以下四个值之一。
The value in the content field is defined as one of the four values below.
Cache-Control 标题的一些信息如下：
Some information on the Cache-Control header is as follows
HTTP 1.1。允许值= PUBLIC |私人| NO-CACHE | NO-STORE。
HTTP 1.1. Allowed values = PUBLIC | PRIVATE | NO-CACHE | NO-STORE.
公共 - 可以缓存在公共共享缓存中。
Private - 可能只缓存在私有缓存中。
否 - 缓存 - 可能不会被缓存。
No-Store - 可以缓存但不归档。
Public - may be cached in public shared caches.
Private - may only be cached in private cache.
No-Cache - may not be cached.
No-Store - may be cached but not archived.
指令CACHE-CONTROL：NO-CACHE表示不应使用缓存信息
而应将请求转发到源服务器。该指令与PRAGMA具有相同的语义：NO-CACHE。
The directive CACHE-CONTROL:NO-CACHE indicates cached information should not be used and instead requests should be forwarded to the origin server. This directive has the same semantics as the PRAGMA:NO-CACHE.
客户端应该包括PRAGMA：NO-CACHE和CACHE-CONTROL：当向服务器发送无缓存请求时为NO-CACHE不知道是否符合HTTP / 1.1。另见EXPIRES。
Clients SHOULD include both PRAGMA: NO-CACHE and CACHE-CONTROL: NO-CACHE when a no-cache request is sent to a server not known to be HTTP/1.1 compliant. Also see EXPIRES.
注意：在HTTP中指定缓存命令可能比在META语句中指定缓存命令更好，在META语句中它们可以影响比浏览器更多，但代理和其他可能缓存信息的中介。
Note: It may be better to specify cache commands in HTTP than in META statements, where they can influence more than the browser, but proxies and other intermediaries that may cache information.
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