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优化 web-二维码登录 优化睡眠时间使用指数退避策略来延长每次轮询的时间间隔，减少CPU占用率

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Signed-off-by: 铉清 <13698617+xuanqings@user.noreply.gitee.com>
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铉清 2024-09-21 16:17:53 +00:00 committed by Gitee
parent dc1d1a7e7e
commit 3559971a8d
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GPG Key ID: 173E9B9CA92EEF8F
1 changed files with 13 additions and 2 deletions
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15
buyer-api/src/main/java/cn/lili/controller/passport/MemberBuyerController.java
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@ -29,7 +29,7 @@ import org.springframework.web.context.request.async.DeferredResult;
import javax.validation.constraints.NotNull;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
/**
* 买家端,会员接口
@ -73,6 +73,8 @@ public class MemberBuyerController {
new ResponseEntity<>(ResultUtil.error(ResultCode.ERROR), HttpStatus.OK);
int timeoutSecond = 20;
DeferredResult<ResponseEntity<Object>> deferredResult = new DeferredResult<>(timeoutSecond * 1000L, timeoutResponseEntity);
// 用于记录重试次数
AtomicInteger retryCount = new AtomicInteger(0);
CompletableFuture.runAsync(() -> {
try {
int i = 0;
@ -83,7 +85,16 @@ public class MemberBuyerController {
&& (QRCodeLoginSessionStatusEnum.WAIT_SCANNING.getCode() == status
|| QRCodeLoginSessionStatusEnum.SCANNING.getCode() == status)) {
//睡眠一秒种，继续等待结果
TimeUnit.SECONDS.sleep(1);
//TimeUnit.SECONDS.sleep(1);
// 应用指数退避策略
int baseSleepTime = 1000; // 基础退避时间（毫秒）
int maxSleepTime = 10000; // 最大退避时间（毫秒）
int sleepTime = Math.min(maxSleepTime, baseSleepTime * (1 + retryCount.getAndIncrement()));
int randomFactor = (int) (Math.random() * (sleepTime / 2)); // 随机化因子
TimeUnit.MILLISECONDS.sleep(sleepTime + randomFactor);
} else {
deferredResult.setResult(new ResponseEntity<>(ResultUtil.data(queryResult), HttpStatus.OK));
break;