ShenYu Optimize

Description

• This doc shows how to do performance optimization for Apache ShenYu.

Time Consumption

• Apache ShenYu is JVM driven and processing time for a single request is nearly between 1-3 ms.

Netty Optimization

• spring-webflux is one of dependencies of ShenYu, and it uses Netty in lower layer.
• The demo down below demonstrates tuning ShenYu by customizing params in Netty.

@Bean
 public NettyReactiveWebServerFactory nettyReactiveWebServerFactory() {
     NettyReactiveWebServerFactory webServerFactory = new NettyReactiveWebServerFactory();
     webServerFactory.addServerCustomizers(new EventLoopNettyCustomizer());
     return webServerFactory;
 }

private static class EventLoopNettyCustomizer implements NettyServerCustomizer {

    @Override
    public HttpServer apply(final HttpServer httpServer) {
        return httpServer
                .tcpConfiguration(tcpServer -> tcpServer
                        .runOn(LoopResources.create("shenyu-netty", 1, DEFAULT_IO_WORKER_COUNT, true), false)
                        .selectorOption(ChannelOption.SO_REUSEADDR, true)
                        .selectorOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
                        .option(ChannelOption.TCP_NODELAY, true)
                        .option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT));
    }
}

• The shenyu-bootstrap module offers this class, you may modify it when benchmarking your app if necessary.
• You can get references of business thread model from thread model