Redis 分布式id

//通过时间获取分布式id能力
public class GenerateTimeBasedIdCapability extends SpringManagedCapability {
    private final static Logger logger = LoggerFactory.getLogger(GenerateTimeBasedIdCapability.class);
    @Resource
    private RedisClient redisClient;
    private final ThreadLocal<DateFormat> ssDateFormatThreadLocal = new ThreadLocal<DateFormat>() {
        @Override
        public DateFormat get() {
            DateFormat v = super.get();
            if (v == null) {
                v = new SimpleDateFormat("yyyyMMddHHmmss");
                super.set(v);
            }
            return v;
        }
    };
    public String execute(String idNamespace) {
        TimeWatch timeWatch = TimeWatch.start();
        String currDateStr = ssDateFormatThreadLocal.get().format(new Date());
        String idCountKey = CacheKeyManager.createIdCountKey(idNamespace, currDateStr);
        Long idCount = redisClient.incr(idCountKey);
        redisClient.expire(idCountKey, Constants.COUNT_EXPIRE_TIME);
        if (idCount == null) {
            KeyLogger.log(KeyLogConstants.Domain.IdGenerate.ID_GENERATE_CAPABILITY, Boolean.FALSE, "idNamespace",
                idNamespace);
            logger.error("incr error idNamespace:{}", idNamespace);
            ExceptionThrower.throwException(SysResultCodeEnum.IO_EXCEPTION);
        }
        Expectation.requireTrue(idCount < Constants.COUNT_MAX_NUM, ResultCodeEnum.COUNT_NUM_OUT_OF_RANGE);
        String idCountStr = StringUtils.leftPad(String.valueOf(idCount), Constants.COUNT_LEFT_PAD_LENGTH,
            Constants.COUNT_LEFT_PAD_CHAR);
        KeyLogger.log(KeyLogConstants.Domain.IdGenerate.ID_GENERATE_CAPABILITY, Boolean.TRUE, "idNamespace",
            idNamespace);
        KeyLogger.log(KeyLogConstants.Domain.IdGenerate.ID_GENERATE_CAPABILITY, timeWatch.endMS(), "idNamespace",
            idNamespace);
        return currDateStr + idCountStr;
    }
}