Rails Admin POST 请求导致 Heroku 上的 H15 错误

如何解决Rails Admin POST 请求导致 Heroku 上的 H15 错误

我有一个在 Heroku 上运行良好的 rails 应用程序，但是来自 Rails 管理员的所有 POST 请求在导致 H15“空闲连接”错误之前都挂了 55 秒。

我读到它可能来自：

• ActionCable 在连续 55 秒内没有 ping 服务器，但我没有使用 Rails Admin 的实时功能，我删除了我的 ActionCable 代码进行测试，但问题仍然存在

• 服务器尝试将响应返回到与您配置 DNS 后发起呼叫的 IP 不同的 IP，但我没有，我没有使用自定义域名，我使用我的网站-herokuapp.com 之一。

这是来自我的应用程序的管理员 POST 请求的日志：

2021-01-24T19:09:36.245896+00:00 app[web.1]: I,[2021-01-24T19:09:36.245747 #4]  INFO -- : source=rack-timeout id=21d5a60a-a82a-4cf7-bbe1-b0254f5823c7 wait=11ms timeout=15000ms state=ready
2021-01-24T19:09:36.246186+00:00 app[web.1]: D,[2021-01-24T19:09:36.246074 #4] DEBUG -- : source=rack-timeout id=21d5a60a-a82a-4cf7-bbe1-b0254f5823c7 wait=11ms timeout=15000ms service=0ms state=active
2021-01-24T19:09:36.246456+00:00 app[web.1]: I,[2021-01-24T19:09:36.246394 #4]  INFO -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7] Started PUT "/admin/first_job/252990/edit" for 92.183.112.168 at 2021-01-24 19:09:36 +0000
2021-01-24T19:09:36.248487+00:00 app[web.1]: I,[2021-01-24T19:09:36.248393 #4]  INFO -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7] Processing by RailsAdmin::MainController#edit as HTML
2021-01-24T19:09:36.248636+00:00 app[web.1]: I,[2021-01-24T19:09:36.248524 #4]  INFO -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]   Parameters: {"utf8"=>"✓","authenticity_token"=>"9QGOhotnG3BkLq6TbkXuXZgMVxJ+AinueV0oEUaVw5iaQ6DRJukISaCV4x+lcpXog9ExNYf9DB8/u/jufN6+Dg==","first_job"=>{"company_name"=>"My company"},"return_to"=>"https://mywebsite-staging.herokuapp.com/admin/first_job","_save"=>"","model_name"=>"first_job","id"=>"252990"}
2021-01-24T19:09:36.285663+00:00 app[web.1]: D,[2021-01-24T19:09:36.285530 #4] DEBUG -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]   User Load (1.5ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id",307509],["LIMIT",1]]
2021-01-24T19:09:36.307192+00:00 app[web.1]: D,[2021-01-24T19:09:36.307039 #4] DEBUG -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]   FirstJob Load (2.0ms)  SELECT  "first_jobs".* FROM "first_jobs" WHERE "first_jobs"."id" = $1 ORDER BY "first_jobs"."id" ASC LIMIT $2  [["id",252990],1]]
2021-01-24T19:09:36.312261+00:00 app[web.1]: D,[2021-01-24T19:09:36.312087 #4] DEBUG -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]    (1.0ms)  BEGIN
2021-01-24T19:09:36.317945+00:00 app[web.1]: D,[2021-01-24T19:09:36.317805 #4] DEBUG -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]   Company Load (1.8ms)  SELECT  "companies".* FROM "companies" WHERE "companies"."id" = $1 LIMIT $2  [["id",26218],1]]
2021-01-24T19:09:36.322239+00:00 app[web.1]: D,[2021-01-24T19:09:36.322101 #4] DEBUG -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7]    (1.1ms)  COMMIT
2021-01-24T19:09:36.323441+00:00 app[web.1]: I,[2021-01-24T19:09:36.323351 #4]  INFO -- : [21d5a60a-a82a-4cf7-bbe1-b0254f5823c7] Redirected to https://mywebsite-staging.herokuapp.com/admin/first_job
2021-01-24T19:09:36.324756+00:00 app[web.1]: I,[2021-01-24T19:09:36.324674 #4]  INFO -- : Completed 302 Found in 76ms (ActiveRecord: 19.6ms)
2021-01-24T19:09:36.324858+00:00 app[web.1]: I,[2021-01-24T19:09:36.324425 #4]  INFO -- : source=rack-timeout id=21d5a60a-a82a-4cf7-bbe1-b0254f5823c7 wait=11ms timeout=15000ms service=79ms state=completed
2021-01-24T19:10:31.518929+00:00 heroku[router]: at=error code=H15 desc="Idle connection" method=POST path="/admin/first_job/252990/edit" host=mywebsite-staging.herokuapp.com request_id=21d5a60a-a82a-4cf7-bbe1-b0254f5823c7 fwd="92.183.112.168" dyno=web.1 connect=0ms service=55282ms status=503 bytes= protocol=https

哦，当然，在我本地一切正常。

有人有想法吗？