压测和提高QPS

压测和提高QPS

1.对项目的所有接口响应时间进行监控(使用拦截器,依赖swagger3增强版)，将接口的响应时间统一控制在500毫秒内完成

(1)swagger3增强版

<dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId>
            <version>4.1.0</version>
</dependency>


**
 * @author Yubo Huang
 * @date Created in  2024/11/10 10:05 上午
 * @description 文档配置
 */
@Configuration
public class Knife4jConfig {

    @Bean
    public OpenAPI springShopOpenApi() {
        return new OpenAPI()
                // 接口文档标题
                .info(
                        new Info().title("接口文档")
                                // 接口文档简介
                                .description("Knife4j OpenApi3的接口文档")
                                // 接口文档版本
                                .version("v1.0")
                                // 开发者联系方式
                                .contact(new Contact().name("").email(""))
                );
    }
}

(2)拦截器

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import java.lang.reflect.Method;

/**
 * @author Yubo Huang
 * @date Created in  2024/11/10 9:17 上午
 * @description 响应时间
 */
@Slf4j
@Component
public class ResTimeInterceptor implements HandlerInterceptor {

    private static final Long MAX_RES_TIME = 500L;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        long startTime = System.currentTimeMillis();
        request.setAttribute("startTime", startTime);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        long startTime = (Long) request.getAttribute("startTime");
        long endTime = System.currentTimeMillis();
        long resTime = endTime - startTime;
        if (resTime < MAX_RES_TIME) {
            return;
        }

        if (handler instanceof HandlerMethod handlerMethod) {
            //controller
            Class<?> beanType = handlerMethod.getBeanType();
            //api
            Method method = handlerMethod.getMethod();
            //info
            Tag tag = beanType.getAnnotation(Tag.class);
            String name = tag.name();
            Operation operation = method.getAnnotation(Operation.class);
            String summary = operation.summary();
            //log
            String queryString = request.getQueryString();
            log.warn("{} -> {} -> {} -> resTime:{} -> param:{}", name, summary, request.getRequestURI(), resTime, queryString);
        }
    }
}

(3).添加拦截器

import com.yb.interceptor.ResTimeInterceptor;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @author Yubo Huang
 * @date Created in  2024/11/10 10:19 上午
 * @description web配置
 */
@Configuration
@RequiredArgsConstructor
public class WebConfig implements WebMvcConfigurer {

    private final ResTimeInterceptor resTimeInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(resTimeInterceptor);
    }

}

2.独立的服务器或者虚拟机下进行(限制cpu和内存)
3.新写一个接口，接口中使用sleep休眠300毫秒(对该接口进行压测)
4.单个节点的项目调整(最大线程数和最大等待数)，通过jmeter压测到最大qps
5.这就是服务器下该节点的最大QPS，根据需求增加服务器和项目节点就可以了
6.当多个节点的QPS到达了需求，接下来还要考虑nginx的QPS和mysql的TPS，共同来支撑需求对应的QPS

网络的上行和下行是否影响QPS