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我正在使用 spray-can 版本 1.3.3 和 akka 2.3.9 服务器代码看起来很标准

应用程序.conf:

spray.can {
 server {
  pipelining-limit = 10
  request-timeout = 50ms
  stats-support = on
 }
...

引导:

object Boot extends App {
  implicit val system = ActorSystem("on-spray-can")
  val service = system.actorOf(Props[MyServiceActor], "demo-service")
  IO(Http) ! Http.Bind(service, "0.0.0.0", port = 8080)
 }

我的服务演员:

  class MyServiceActor extends Actor with MyService {
    def actorRefFactory = context
    def receive = runRoute(route)
  }

trait MyService extends HttpService {
  implicit def executionContext = actorRefFactory.dispatcher
 val route: Route =
   path("do") {
     post {
       detach() {          
          entity(as[String]) { body =>
            complete {
              val resp = processRequestAsync(body)
              convertToHttpResponseAsync(resp)
            }}}}
 }

 def processRequestAsync(body:String):Future[MyContext]={
     // do some non-blocking using async client.api, spray-client..
 }
 def convertToHttpResponseAsync(resp: Future[MyContext]): Future[HttpResponse] = {
  resp.map { ctx => 
 // ... Do some non blocking ops
    HttpResponse(StatusCodes.OK, entity = HttpEntity(`application/json`, ctx.getData))
  }
 }
}

在我的本地主机环境中,统计数据看起来很合理(至少#of open connections)我正在使用 ab、wrk 基准,但在生产中我得到了非常不同的画面:

Total requests        : 2434475
Open requests         : 1847228
Max open requests     : 1847228
Total connections     : 1995540
Open connections      : 142
Max open connections  : 1239
Requests timed out    : 189196

有一个 ngnix 接收外部请求并将它们发送到应用程序。

问题是这么多开放连接的根本原因是什么?什么参数,标题,我应该注意什么,调查?

我的应用程序从 docker 容器运行

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