spring boot app只接受6个请求,为什么? [英] spring boot app only accepts 6 requests why?

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问题描述

这真让我烦恼,希望有人能帮上忙.

This is really annoying me and hoping someone can help.

我有一个spring boot应用程序,正在向邮递员发出请求,我需要同时发出大约20个单独的请求.但是,我的应用程序仅接受6,然后在这些完成时启动其他应用程序.

I have a spring boot application which I am firing requests to from postman and i need to fire about 20 separate requests at the same time. However my application only accepts 6 and then when these have finished starts the others.

我麻痹了这个示例,以便在此处发布

I numbed the example down so as to post it here

简单的控制器方法

@RequestMapping(value = "/testPost", method = RequestMethod.POST)
    public @ResponseBody String handleFileUpload() throws InterruptedException {
        System.out.println("Recieved request for Thread sleeping" + Thread.currentThread().getName());
        Thread.sleep(40000);
        System.out.println("Recieved request for Thread waking" + Thread.currentThread().getName());
        return "returning from post";
    }

application.properties:我将最大线程数更改为200,而不是默认值,但没有区别

application.properties: I changed the max thread count to 200 rather than default but made no difference

server.contextPath=/qas
server.port=8081

server.tomcat.max-threads=200

记录邮递员发出的请求.如您所见,在6个请求之后,第7个请求仅在第1个请求变为免费之后才得到服务.我在没有负载均衡器的本地桌面上运行,这是原因吗?不太确定为什么会停在6点吗?

Logs for requests fired from postman. As you can see after 6 requests the 7th request is only serviced after the 1st request becomes free. I am running on my local desktop with no load balancer is this the reason? Not really sure why it stops at 6?

日志:

2016-04-08 09:02:35.408  INFO 17700 --- [nio-8081-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/qas]    : Initializing Spring FrameworkServlet 'dispatcherServlet'
2016-04-08 09:02:35.408  INFO 17700 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2016-04-08 09:02:35.421  INFO 17700 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 13 ms
Recieved request for Thread sleepinghttp-nio-8081-exec-1
Recieved request for Thread sleepinghttp-nio-8081-exec-2
Recieved request for Thread sleepinghttp-nio-8081-exec-3
Recieved request for Thread sleepinghttp-nio-8081-exec-4
Recieved request for Thread sleepinghttp-nio-8081-exec-5
Recieved request for Thread sleepinghttp-nio-8081-exec-6
Recieved request for Thread wakinghttp-nio-8081-exec-1
Recieved request for Thread sleepinghttp-nio-8081-exec-7
Recieved request for Thread wakinghttp-nio-8081-exec-2
Recieved request for Thread sleepinghttp-nio-8081-exec-8
Recieved request for Thread wakinghttp-nio-8081-exec-3
Recieved request for Thread wakinghttp-nio-8081-exec-4
Recieved request for Thread wakinghttp-nio-8081-exec-5
Recieved request for Thread wakinghttp-nio-8081-exec-6
Recieved request for Thread wakinghttp-nio-8081-exec-7
Recieved request for Thread wakinghttp-nio-8081-exec-8

预先感谢

推荐答案

许多人不知道(或忘记)的是,大多数浏览器具有每个主机可以触发的最大并行请求数.多少取决于浏览器和浏览器版本. (显然,您使用的是Postman,后者使用的Chrome允许6个并发请求).

What a lot of people don't know (or forget) is that most browsers have a maximum number of parallel requests that can be fired per hosts. How many depends on the browser and browser version. (Apparently you use Postman, which uses chrome which allows 6 concurrent requests).

请参见 http://sgdev- blog.blogspot.nl/2014/01/maximum-concurrent-connection-to-same.html 了解更多详细说明.

See http://sgdev-blog.blogspot.nl/2014/01/maximum-concurrent-connection-to-same.html for a more detailed description.

另请参见 https://stackoverflow.com/a/985704/2696260

这篇关于spring boot app只接受6个请求,为什么?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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