When invoking a Callable method via ajax running on a Spring Boot application, the embedded tomcat is handling requests asynchronously and perfectly fine:
2017-07-02 09:12:24.283 INFO 3582 --- [nio-8090-exec-3] c.r.web.controllers.MainController : Ali was stored in redis
2017-07-02 09:12:25.671 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali is searching for a chat
2017-07-02 09:12:25.820 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali last activity date was updated in redis
2017-07-02 09:12:26.053 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali retrieving random conv null
2017-07-02 09:12:26.054 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali created my own conversation
2017-07-02 09:12:26.211 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali searching...
2017-07-02 09:12:27.927 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali searching...
2017-07-02 09:12:29.128 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali searching...
2017-07-02 09:12:29.305 INFO 3582 --- [nio-8090-exec-2] c.r.web.controllers.MainController : Zeina was stored in redis
2017-07-02 09:12:29.984 INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController : Zeina is searching for a chat
2017-07-02 09:12:30.135 INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController : Zeina last activity date was updated in redis
2017-07-02 09:12:30.285 INFO 3582 --- [ngAsyncThread-2] c.r.web.controllers.MainController : Zeina retrieving random conv Conversation [id=bbb17857-9049-4, person1=Person [id=9a243d57-2f0c-4, name=Ali, age=22, gender=M, ip=0:0:0:0:0:0:0:1, loginDate=Sun Jul 02 09:12:23 EEST 2017, lastActiveDate=Sun Jul 02 09:12:25 EEST 2017], person2=null, creationDate=Sun Jul 02 09:12:26 EEST 2017]
2017-07-02 09:12:30.687 INFO 3582 --- [ngAsyncThread-1] c.r.web.controllers.MainController : Ali searching...
2017-07-02 09:39:54.420 INFO 3582 --- [ngAsyncThread-3] c.r.web.controllers.MainController : Zeina is searching for a chat
However, when I deploy the application on an external tomcat server, one call is hanging the server and the next one is only processed after the completion of the first call.
2017-07-02 06:47:57.285 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:47:58.297 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:47:59.309 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:48:00.323 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:48:01.335 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:48:02.347 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:48:03.359 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun searching...
2017-07-02 06:48:04.388 INFO 3324 --- [SpringAsyncThread-4] c.r.web.controllers.MainController : Zanzoun remove dead conversatio
2017-07-02 06:48:04.682 INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController : AJ is searching for a chat
2017-07-02 06:48:04.695 INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController : AJ last activity date was updated in redis
2017-07-02 06:48:04.708 INFO 3324 --- [SpringAsyncThread-5] c.r.web.controllers.MainController : AJ retrieving random conv Conversation [id=f5fe39ac-91ce-4, person1=Person [id=e25d18f3-9729-4, name=Zanzoun, age=12, gender=F, ip=91.197.46.40, loginDate=Sun Jul 02 06:47:32 UTC 2017, lastActiveDate=Sun Jul 02 06:47:48 UTC 2017], person2=null, creationDate=Sun Jul 02 06:47:48 UTC 2017]
2017-07-02 06:48:50.833 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ is searching for a chat
2017-07-02 06:48:50.845 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ last activity date was updated in redis
2017-07-02 06:48:50.860 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ retrieving random conv null
2017-07-02 06:48:50.860 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ created my own conversation
2017-07-02 06:48:50.872 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ searching...
2017-07-02 06:48:51.884 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ searching...
2017-07-02 06:48:52.896 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ searching...
2017-07-02 06:48:53.908 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ searching...
2017-07-02 06:48:54.921 INFO 3324 --- [SpringAsyncThread-6] c.r.web.controllers.MainController : AJ searching...
In the above log, the call from Zanzoun and AJ were sent at the same time, however AJ processing didn't start until Zanzoun was over.
Below I list my configurations:
@Configuration
@EnableAsync
public class MvcConfig extends WebMvcConfigurerAdapter {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("main");
registry.addViewController("/login").setViewName("login");
registry.addViewController("/admin").setViewName("admin");
}
@Override
public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
configurer.setTaskExecutor(asyncTaskExecutor());
}
@Bean
public AsyncTaskExecutor asyncTaskExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(10);
executor.setMaxPoolSize(200);
executor.setQueueCapacity(500);
executor.setThreadNamePrefix("SpringAsyncThread-");
executor.initialize();
return executor;
}
}
@SpringBootApplication
@EnableScheduling
@EnableAsync
public class App extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(App.class);
}
}
Update 1
I applied the answer provided in the comments by @divine , however the problem was not solved:
<Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol"
minProcessors="3"
maxProcessors="8"
maxThreads="20"
connectionTimeout="150000"
asyncTimeout="150000" />
Update 2
I have tested locally on my Linux machine using an external Tomcat 8.0.21 and it works perfectly. However, I installed also the same version of Tomcat in Windows (It's actually an AWS instance), and the problem remains the same, so it's an OS/Version issue?
Update 3
Here's the pom file as requested:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.randomni</groupId>
<artifactId>web</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<!-- Define that this project is a child of the spring-boot-starter-parent
project which contains all default maven configuration, this project inherits
all these configurations -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.3.RELEASE</version>
</parent>
<dependencies>
<!-- Main Web Dependency, contains MVC and Tomcat -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mobile</artifactId>
</dependency>
<!-- Spring MVC with Thymeleaf views -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- WebJars -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>webjars-locator</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>sockjs-client</artifactId>
<version>1.0.2</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>stomp-websocket</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>normalize.css</artifactId>
<version>5.0.0</version>
</dependency>
<!-- For Deployment -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
<!-- Default Thymeleaf of Spring Boot is version 2, so we had to add these -->
<thymeleaf.version>3.0.6.RELEASE</thymeleaf.version>
<thymeleaf-layout-dialect.version>2.2.2</thymeleaf-layout-dialect.version>
</properties>
</project>