是否可以在HTTP中缓存POST方法？ [英] Is it possible to cache POST methods in HTTP?

问题描述

使用非常简单的缓存语义：如果参数相同（当然URL相同），那么它就是一个命中。那可能吗？推荐？

With very simple caching semantics: if the parameters are the same (and the URL is the same, of course), then it's a hit. Is that possible? Recommended?

推荐答案

相应的 RFC 2616 允许将响应缓存到POST消息中，如果使用适当的标题。

The corresponding RFC 2616 in section 9.5 (POST) allows the caching of the response to a POST message, if you use the appropriate headers.

对此方法的响应不可缓存，除非响应
包含适当的Cache-Control或Expires头字段。但是，
303（请参阅其他）响应可用于将用户代理指向
检索可缓存资源。

Responses to this method are not cacheable, unless the response includes appropriate Cache-Control or Expires header fields. However, the 303 (See Other) response can be used to direct the user agent to retrieve a cacheable resource.

请注意，相同的RFC在第13节（在HTTP中缓存）中明确指出缓存必须在POST 请求之后使相应的实体无效。

Note that the same RFC states explicitly in section 13 (Caching in HTTP) that a cache must invalidate the corresponding entity after a POST request.

某些HTTP方法必须导致
缓存使实体无效。这是
$
Request-URI引用的实体，或者是Location或
Content-Location标头（如果存在）。
这些方法是：

Some HTTP methods MUST cause a cache to invalidate an entity. This is either the entity referred to by the Request-URI, or by the Location or Content-Location headers (if present). These methods are:

  - PUT
  - DELETE
  - POST

我不清楚这些规范如何允许有意义的缓存。

It's not clear to me how these specifications can allow meaningful caching.

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