Github 304响应似乎计入速率限制

Question

我遇到了github api计数问题的请求，该请求针对速率限制产生了304响应

GET /repos/******/***/contents/***?ref=master HTTP/1.1
Host: api.github.com
Connection: keep-alive
Cache-Control: max-age=0
Sec-Fetch-Dest: empty
If-None-Match: W/"b15846765021dc2483e5f3110b53a69f210ececa"
If-Modified-Since: Thu, 19 Mar 2020 01:33:51 GMT
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36
Accept: */*
Origin: *******
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: cors
Referer: ******
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9

此请求将返回304，不带任何正文，但X-Ratelimit-Remaining减量。

Conditional Github Requests

注意：发出条件请求并收到304响应不计入您的速率限制，因此我们建议您尽可能使用它。

我只设置If-None-Match和If-Modified-Since标头，其余的由浏览器设置（使用访存api）

请求

可以通过浏览器复制到https://api.github.com/repos/angular/angular/contents/?ref=master，并确保禁用了开发人员控制台中的禁用缓存，从而可以使用浏览器进行复制。>

回应

第一次通话时

未设置[If-None-Match和If-Modified-Since

HTTP/1.1 200 OK
date: Wed, 01 Apr 2020 12:43:09 GMT
content-type: application/json; charset=utf-8
server: GitHub.com
status: 200 OK
cache-control: public, max-age=60, s-maxage=60
vary: Accept, Accept-Encoding, Accept, X-Requested-With
etag: W/"b15846765021dc2483e5f3110b53a69f210ececa"
last-modified: Thu, 19 Mar 2020 01:33:51 GMT
x-github-media-type: github.v3; format=json
access-control-expose-headers: ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset
access-control-allow-origin: *
strict-transport-security: max-age=31536000; includeSubdomains; preload
x-frame-options: deny
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
referrer-policy: origin-when-cross-origin, strict-origin-when-cross-origin
content-security-policy: default-src 'none'
content-encoding: gzip
X-Ratelimit-Limit: 60
X-Ratelimit-Remaining: 59
X-Ratelimit-Reset: 1585748589
Accept-Ranges: bytes
Content-Length: 1696
X-GitHub-Request-Id: B298:74D9:10D7B8:177665:5E848C5D

后跟请求的数据

后续通话：

If-None-Match和If-Modified-Since被设置为来自先前请求的etag和last-modified标头

HTTP/1.1 304 Not Modified
date: Wed, 01 Apr 2020 12:44:51 GMT
content-type: application/json; charset=utf-8
server: GitHub.com
status: 200 OK
cache-control: public, max-age=60, s-maxage=60
vary: Accept, Accept-Encoding, Accept, X-Requested-With
etag: W/"b15846765021dc2483e5f3110b53a69f210ececa"
last-modified: Thu, 19 Mar 2020 01:33:51 GMT
x-github-media-type: github.v3; format=json
access-control-expose-headers: ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset
access-control-allow-origin: *
strict-transport-security: max-age=31536000; includeSubdomains; preload
x-frame-options: deny
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
referrer-policy: origin-when-cross-origin, strict-origin-when-cross-origin
content-security-policy: default-src 'none'
content-encoding: gzip
X-Ratelimit-Limit: 60
X-Ratelimit-Remaining: 58
X-Ratelimit-Reset: 1585748589
X-GitHub-Request-Id: FC10:2036:26E528:346432:5E848CC3

没有数据返回。根据文档，X-Ratelimit-Remaining应该停留在59

我的请求是否有问题，或者githubs上的ratelimit是否存在错误？

我遇到了github api计数问题的请求，该请求针对速率限制GET了304响应GET / repos / ****** / *** / contents / ***？ref = master HTTP / 1.1主机：api.github.com连接：...

Answer 1

根据文档X-Ratelimit-Remaining应该停留在59