附加 HTTP 状态代码 ( RFC6585 ) 之一是
在哪里可以找到对这种 HTTP 响应状态有用的 HTTP / REST API 速率限制 HTTP 响应标头的示例？
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以下是 HTTP API 速率限制 HTTP 响应标头的一些示例。取自四个常见的 REST API：Github、Vimeo、Twitter 和 Imgur：
Github 速率限制http://developer.github.com/v3/#rate-limiting
#=============================#=============================================#
# HTTP Header # Description #
#=============================#=============================================#
| X-RateLimit-Limit | Request limit per hour |
+-----------------------------+---------------------------------------------+
| X-RateLimit-Remaining | The number of requests left for the time |
| | window |
+-----------------------------+---------------------------------------------+
Vimeo 速率限制http://developer.vimeo.com/guidelines/rate-limiting
#=============================#=============================================#
# HTTP Header # Description #
#=============================#=============================================#
| X-RateLimit-Limit | Request limit per day / per 5 minutes |
+-----------------------------+---------------------------------------------+
| X-RateLimit-Remaining | The number of requests left for the time |
| | window |
+-----------------------------+---------------------------------------------+
| X-RateLimit-Reset | The remaining window before the rate limit |
| | resets in UTC epoch seconds |
+-----------------------------+---------------------------------------------+
Twitter REST API 速率限制https://dev.twitter.com/docs/rate-limiting/1.1
注意： Twitter 使用与 Vimeo 类似的名称的标题，但每个名称中都有另一个破折号。
#=============================#=============================================#
# HTTP Header # Description #
#=============================#=============================================#
| X-Rate-Limit-Limit | The rate limit ceiling for that given |
| | request |
+-----------------------------+---------------------------------------------+
| X-Rate-Limit-Remaining | The number of requests left for the |
| | 15 minute window |
+-----------------------------+---------------------------------------------+
| X-Rate-Limit-Reset | The remaining window before the rate limit |
| | resets in UTC epoch seconds |
+-----------------------------+---------------------------------------------+
Imgur API 速率限制http://api.imgur.com/
#=============================#=============================================#
# HTTP Header # Description #
#=============================#=============================================#
| X-RateLimit-UserLimit | Total credits that can be allocated |
+-----------------------------+---------------------------------------------+
| X-RateLimit-UserRemaining | Total credits available |
+-----------------------------+---------------------------------------------+
| X-RateLimit-UserReset | Timestamp (unix epoch) for when the credits |
| | will be reset |
+-----------------------------+---------------------------------------------+
| X-RateLimit-ClientLimit | Total credits that can be allocated for the |
| | application in a day |
+-----------------------------+---------------------------------------------+
| X-RateLimit-ClientRemaining | Total credits remaining for the application |
| | in a day |
+-----------------------------+---------------------------------------------+
于 2013-04-15T18:49:30.503 回答
34
除了 API 特定的标头之外，不要忘记不起眼的标准Retry-After标头
服务器发送“Retry-After”标头字段来指示用户代理在发出后续请求之前应该等待多长时间...。该字段的值可以是 HTTP 日期或延迟秒数收到回复后。
该标准在将其与 503 或 3xx 状态代码一起使用时提出了具体的附加建议：
当与 503（服务不可用）响应一起发送时，Retry-After 指示服务预计对客户端不可用的时间。当与任何 3xx（重定向）响应一起发送时，Retry-After 指示在发出重定向请求之前要求用户代理等待的最短时间。
于 2013-05-24T14:22:48.717 回答