Spring MVC与Spring Webflux对比

前言

Spring MVC与Spring Webflux对比

实验对比结果

Spring web MVC

5000个request,  并发每次是100个，用时26.244 seconds

Spring-webflux

5000个request,  并发每次是100个，用时26.269 seconds

总结

总时间上来，差别不大，webmvc是26.244 seconds，而webflux是26.269 seconds，启动线程差别很大，webmvc最高峰时118个，webflux一直是47个。 其它CPU和堆的使用也差别不大。

使用undertow做嵌入式服务的spring mvc ， 用时26.177 seconds，可以看出undertow性能上面的确比tomcat要强。

实验步骤

1. spring_web_mvc 项目

pom.xml

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>
</dependency>

Spring boot application类

@SpringBootApplication
public class SpringWebMvc {
    public static void main(String[] args) {
        SpringApplication.run(SpringWebMvc.class, args);
    }
}

RestController

@RestController
public class SyncController {
    @GetMapping("/sync_result")
    public String getResultAsyc(HttpServletRequest request) {
    	try {
			Thread.sleep(500);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
    	return "Result is ready! threadName:" + Thread.currentThread().getName();
    }
}

项目启动之后，运行jvisualvm.exe监控Thread,CPU,Heap..

用CMD运行下面命令启动apache ab，开始压力测试

ab -n 5000 -c 100 localhost:8080/sync_result

apache ab运行结果

Concurrency Level:      100
Time taken for tests:   26.244 seconds
Complete requests:      5000
Failed requests:        0
Total transferred:      745000 bytes
HTML transferred:       80000 bytes
Requests per second:    190.52 [#/sec] (mean)
Time per request:       524.878 [ms] (mean)
Time per request:       5.249 [ms] (mean, across all concurrent requests)
Transfer rate:          27.72 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.3      0       1
Processing:   500  512   5.7    514     635
Waiting:      500  511   5.6    513     624
Total:        500  512   5.7    514     635

Percentage of the requests served within a certain time (ms)
  50%    514
  66%    515
  75%    516
  80%    516
  90%    517
  95%    518
  98%    520
  99%    523
 100%    635 (longest request)

jvisualvm上的性能检测结果

2. spring_webflux 项目 

pom.xml

   		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-webflux</artifactId>
		</dependency>

application class

@SpringBootApplication
public class SpringWebFlux {
    public static void main(String[] args) {
        SpringApplication.run(SpringWebFlux.class, args);
    }
}

RestController

@RestController
public class WebFluxController {

    @GetMapping("/flux_result")
    public Mono getResult(ServerHttpRequest request) {
       return Mono.defer(() -> Mono.just("Result is ready!" + Thread.currentThread().getName()))
         .delaySubscription(Duration.ofMillis(500));
    }
}

压力测试的运行结果

ab -n 5000 -c 100 localhost:8080/flux_result 

Concurrency Level:      100
Time taken for tests:   26.269 seconds
Complete requests:      5000
Failed requests:        2187
   (Connect: 0, Receive: 0, Length: 2187, Exceptions: 0)
Total transferred:      497187 bytes
HTML transferred:       142187 bytes
Requests per second:    190.34 [#/sec] (mean)
Time per request:       525.386 [ms] (mean)
Time per request:       5.254 [ms] (mean, across all concurrent requests)
Transfer rate:          18.48 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.3      0       1
Processing:   500  511   7.6    513     643
Waiting:      500  510   7.3    511     633
Total:        500  511   7.6    513     643

Percentage of the requests served within a certain time (ms)
  50%    513
  66%    515
  75%    516
  80%    516
  90%    518
  95%    522
  98%    532
  99%    535
 100%    643 (longest request)

jvisualvm上的性能检测结果

 webflux 会根据cpu的数量启动线程。我CPU信息：内核：8，逻辑处理器：16。

3. 利用undertow做嵌入式服务的spring mvc 

在spring mvc的项目的基础上做以下修改

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
		</dependency>
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-undertow</artifactId>
        </dependency>

运行 

ab -n 5000 -c 100 localhost:8080/sync_result

Concurrency Level:      100
Time taken for tests:   26.177 seconds
Complete requests:      5000
Failed requests:        0
Total transferred:      755000 bytes
HTML transferred:       80000 bytes
Requests per second:    191.01 [#/sec] (mean)
Time per request:       523.532 [ms] (mean)
Time per request:       5.235 [ms] (mean, across all concurrent requests)
Transfer rate:          28.17 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.3      0       1
Processing:   500  510   6.3    512     603
Waiting:      500  509   6.1    511     592
Total:        500  510   6.3    512     604

Percentage of the requests served within a certain time (ms)
  50%    512
  66%    514
  75%    515
  80%    515
  90%    516
  95%    517
  98%    519
  99%    533
 100%    604 (longest request)

jvisualvm上的性能检测结果