微服务架构中哪种 Java 框架最适合高并发场景？

@RestController
@RequestMapping("/api")
public class ApiController {

    @GetMapping("/ping")
    public String ping() {
        return "pong";
    }
}

import io.vertx.core.AbstractVerticle;
import io.vertx.core.Future;
import io.vertx.core.Vertx;
import io.vertx.core.http.HttpServer;
import io.vertx.core.http.HttpServerResponse;
import io.vertx.ext.web.Router;

public class MainVerticle extends AbstractVerticle {

    @Override
    public void start(Future<Void> startFuture) {
        HttpServer server = Vertx.vertx().createHttpServer();

        Router router = Router.router(Vertx.vertx());
        router.get("/api/ping").handler(this::pingHandler);

        server
                .requestHandler(router)
                .listen(8080, result -> {
                    if (result.succeeded()) {
                        startFuture.complete();
                    } else {
                        startFuture.fail(result.cause());
                    }
                });
    }

    private void pingHandler(RoutingContext ctx) {
        HttpServerResponse response = ctx.response();
        response
                .setChunked(true)
                .write("pong")
                .end();
    }
}