Spring Cloud项目整合Sentinel及简单使用

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
public class SentinelController {
 
    @GetMapping("/testSentinel")
    @SentinelResource(value = "test", blockHandler = "handleException")
    public String testSentinel() {
        return "Sentinel is working!";
    }
 
    public String handleException(BlockException ex) {
        return "Sorry, the system is busy now, please try again later.";
    }
}

这段代码演示了如何在Spring Cloud项目中使用Sentinel进行流量控制。@SentinelResource注解用于定义资源，并指定了当资源访问受限时的回退方法handleException。在实际使用中，你需要配置Sentinel的规则来适应你的服务负载和并发要求。