Java锁竞争导致sql慢日志原因分析

@Override
@Transactional(rollbackFor = Exception.class)
public LiveMemberResponseDTO becomeStudentNotQueryOrder(LiveBecomeStudentForOrderRequestDTO requestDTO) {
    EduUserEntity user = eduUserService.syncLocalByAccount(requestDTO.getOrderAccountId(), UserRegisterChannel.LIVE_APPLY);
    EduUserEntity applyUser = eduUserService.syncLocalByAccount(requestDTO.getApplyAccountId(), UserRegisterChannel.LIVE_APPLY);
    ...
    ...
    ...
}

@Override
@Lock(waitTime = 10000, leaseTime = 3000, value = RedisConstant.USER_SYNC_LOCAL, key = "#accountId")
public EduUserEntity syncLocalByAccount(String accountId, String mobile, String fullName, String source, UserRegisterChannel registerChannel) {
    EduUserEntity eduUserEntity = queryUsersByAccountId(accountId);
    boolean updateFlag = false;
    ....
	....
	....//判断是否需要更新
    if (updateFlag) {
       saveOrUpdate(eduUserEntity);
    }
    return eduUserEntity;
}

@Override
@Lock(waitTime = 10000, leaseTime = 3000, value = RedisConstant.USER_SYNC_LOCAL, key = "#accountId")
//这里开启新事务
@Transactional(propagation = Propagation.REQUIRES_NEW, rollbackFor = Exception.class)
public EduUserEntity syncLocalByAccount(String accountId, String mobile, String fullName, String source, UserRegisterChannel registerChannel) {
    EduUserEntity eduUserEntity = queryUsersByAccountId(accountId);
    boolean updateFlag = false;
    ....
	....
	....//判断是否需要更新
    if (updateFlag) {
       saveOrUpdate(eduUserEntity);
    }
    return eduUserEntity;
}