Configure Jetty’s Thread Pool in a Spring Boot Application

@Bean
public JettyEmbeddedServletContainerFactory jettyEmbeddedServletContainerFactory(@Value("${server.port:8080}") final String port,
            @Value("${jetty.threadPool.maxThreads:200}") final String maxThreads,
            @Value("${jetty.threadPool.minThreads:8}") final String minThreads,
            @Value("${jetty.threadPool.idleTimeout:60000}") final String idleTimeout) {
    final JettyEmbeddedServletContainerFactory factory =  new JettyEmbeddedServletContainerFactory(Integer.valueOf(port));
    factory.addServerCustomizers(new JettyServerCustomizer() {
        @Override
        public void customize(final Server server) {
            // Tweak the connection pool used by Jetty to handle incoming HTTP connections
            final QueuedThreadPool threadPool = server.getBean(QueuedThreadPool.class);
            threadPool.setMaxThreads(Integer.valueOf(maxThreads));
            threadPool.setMinThreads(Integer.valueOf(minThreads));
            threadPool.setIdleTimeout(Integer.valueOf(idleTimeout));
        }
    });

    return factory;
}

ext {
    jettyVersion = '9.0.3.v20130506'
}

dependencies {
  ...

  compile "org.eclipse.jetty:jetty-server:$jettyVersion"
  compile "org.eclipse.jetty:jetty-util:$jettyVersion"

  ...
}