利用redis中setnx获取锁单线程执行业务逻辑仿并发

ValueOperations：字符串类型操作

@Resource(name = "stringRedisTemplate")
private ValueOperations<String, Object> valueOpsCache;

例如redis获取锁，获取到锁的线程执行业务逻辑

//redis 锁
String redisKey = RedisConstant.KEY;
if (!valueOpsCache.setIfAbsent(redisKey, "1")) {
    return true;
}
valueOpsCache.set(redisKey, "1", 300, TimeUnit.SECONDS);

底层就是调用的setnx命令，如果设置成功就获取到锁