Post 3: Implementing a Spring Boot Forward Proxy Client

@Configuration
public class ProxyConfig {

    @Bean
    public WebClient webClient() {
        HttpClient httpClient = HttpClient.create()
            .proxy(proxy -> proxy
                .type(ProxyProvider.Proxy.HTTP)
                .host("proxy-server.example.com")
                .port(8080))
            .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000);

        return WebClient.builder()
            .clientConnector(new ReactorClientHttpConnector(httpClient))
            .build();
    }

    @Bean
    public Executor taskExecutor() {
        // Java 21 virtual threads for proxy handling
        return Executors.newVirtualThreadPerTaskExecutor();
    }
}

For 10M users, we:

1. Use virtual threads to handle proxy connections efficiently
2. Configure optimized timeout settings
3. Implement circuit breakers to prevent cascade failures

Want to learn about transparent proxy integration? Stay tuned for my next post!

SpringBoot #Java21 #VirtualThreads #ProxyImplementation #EnterpriseJava