redis缓存一致性延时双删代码实现

不废话、、、如下

1、自定义注解

/**
*@author caoyue
*延时双删
**/
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Target(ElementType.METHOD)
public @interface ClearCache {
    boolean open() default true;
}

2、刪除逻辑

/**
 * @author caoyue
 */
@Component
@Aspect
@Slf4j
public class DoubleClearCacheAop {

    @Autowired
    private UserService userService;
	//声明一个用于延时的定时线程池代替线程sleep
    ScheduledExecutorService task = new ScheduledThreadPoolExecutor(10, new BasicThreadFactory.
            Builder().namingPattern("clearCache-schedule-pool-%d").build());

    @Pointcut("@annotation(com.inspur.henan.uac.modules.open.util.ClearCache)")
    private void clearCachePoint() {
    }

    @Around("clearCachePoint()")
    public Object clearCacheAop(ProceedingJoinPoint proceeds) throws Throwable {
        Method method = ((MethodSignature) proceeds.getSignature()).getMethod();
        ClearCache annotation = method.getAnnotation(ClearCache.class);
        Object proceed = null;
        //如果清除注解开启了
        if (annotation.open()) {
        	//上下文获取信息
            IPubUser user = MsySecurityContextHolder.getUser();
            if (Objects.nonNull(user)) {
            	//执行清除缓存的动作
                userService._clearCache(user);
                //业务处理
                proceed = proceeds.proceed();
                //延时两秒后再删
                task.schedule(() -> {
                    userService._clearCache(user);
                    if (log.isInfoEnabled()) {
                        log.info(Thread.currentThread().getName() + ":double delete cache completed");
                    }
                }, 2L, TimeUnit.SECONDS);
            } else {
                proceed = proceeds.proceed();
            }
        }
        return proceed;
    }
}