HTTP APIレート制限HTTP応答ヘッダーの例
追加のHTTPステータスコードの1つ（ RFC6585 ）は
HTTP/RESTこのHTTP応答ステータスで役立つAPIレート制限HTTP応答ヘッダーの例はどこにありますか？
HTTP APIレート制限HTTP応答ヘッダーの例を次に示します。 4つの一般的なREST API：Github、Vimeo、Twitter、Imgur：
Githubのレート制限 http://developer.github.com/v3/#rate-limited
#=============================#=============================================#
# HTTP Header # Description #
#=============================#=============================================#
| X-RateLimit-Limit | Request limit per hour |
+-----------------------------+---------------------------------------------+
| X-RateLimit-Remaining | The number of requests left for the time |
| | window |
+-----------------------------+---------------------------------------------+
Vimeoレート制限 http://developer.vimeo.com/guidelines/rate-limited
#=============================#=============================================#
# 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レート制限 https://dev.Twitter.com/docs/rate-limited/1.1
注：Twitterは、Vimeoのような類似した名前のヘッダーを使用しますが、各名前に別のダッシュがあります。
#=============================#=============================================#
# 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のレート制限 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 |
+-----------------------------+---------------------------------------------+
API固有のヘッダーに加えて、謙虚で標準的なRetry-Afterヘッダー。