spring-boot - 如何在spring boot 2中配置netty

Question

默认情况下，Spring Web Flux 使用单线程事件循环 netty。如何配置 spring boot 以便为每个核心创建一个线程。

谢谢，

洛克什

Answer 1

如 Spring Boot reference documentation 中所述，您可以使用 NettyServerCustomizer 自定义 Reactor Netty Web 服务器.

这是 Spring Boot 2.1 的示例:

@Component
public class MyNettyWebServerCustomizer
        implements WebServerFactoryCustomizer<NettyReactiveWebServerFactory> {

    @Override
    public void customize(NettyReactiveWebServerFactory factory) {
        factory.addServerCustomizers(new EventLoopNettyCustomizer());
    }
}

class EventLoopNettyCustomizer implements NettyServerCustomizer {

    @Override
    public HttpServer apply(HttpServer httpServer) {
        EventLoopGroup eventLoopGroup = //...;
        return httpServer.tcpConfiguration(tcpServer ->
                tcpServer.bootstrap(serverBootstrap
                        -> serverBootstrap.group(eventLoopGroup)));
    }
}