分布式架构下基于Redisson实现Redis分布式锁_redisson实现分布式锁

public class RedisLockController {

private static final Logger LOGGER = LoggerFactory.getLogger(RedisLockController.class);

@Resource

private StringRedisTemplate stringRedisTemplate;

@RequestMapping(“/deduct_stock”)

@Transactional

public ApiResult deductStock() {

String lockKey = “lockKey”;

String clientId = UUID.randomUUID().toString();

try {

Boolean flag = stringRedisTemplate.opsForValue().setIfAbsent(lockKey, clientId, 30, TimeUnit.SECONDS);

if (!flag) return new ApiResult(ReturnEnum.FAILED, “Not the same lock”);

int stockNum = Integer.parseInt(stringRedisTemplate.opsForValue().get(“stock”));

if (stockNum > 0) {

int realStockNum = stockNum - 1;

stringRedisTemplate.opsForValue().set(“stock”, realStockNum + “”);

LOGGER.info(“扣减成功，剩余库存：{}”, realStockNum);

} else