redis常用类型及分布式锁

Redis常用数据类型，分别是:

1. String（字符串）
2. List（列表）
3. Hash（字典）
4. Set（集合）
5. Sorted Set（有序集合）

 

redis分布式锁：

 

代码：

/**
 * 分布式锁
 */
public class RedisTool {

    private  boolean setLock(String key, String requestId, long expire) {
        try {
            RedisCallback callback = (connection) -> {
                JedisCommands commands = (JedisCommands) connection.getNativeConnection();
                return commands.set(key, requestId, "NX", "PX", expire);
            };
            Object result = redisTemplate.execute(callback);
            return !StringUtil.isNullOrEmpty(result);
        } catch (Exception e) {
            throw BusinessException.define ( "网络异常,请重试!" );
        }

    }

//加锁
RedisTool redisTool=new RedisTool ();
while(!redisTool.setLock (sampleplanCodeKey,sampleplanCodeId,SampleNum.Time_Interval.getValue ()  )){
    try {
        Thread.sleep(SampleNum.Sleep_Time.getValue ());
    } catch (InterruptedException e) {
        e.printStackTrace();
        throw  BusinessException.define ("网络缓慢,请重试!");
    }
}
log.info ("==================加锁成功=================");
    if (StringUtil.isNullOrEmpty(redisTemplate.opsForValue().get(SampleNum.SampleNum_REDIS_Scheme_No.getName ()))) {
        redisTemplate.opsForValue().set(SampleNum.SampleNum_REDIS_Scheme_No.getName (), sampleNum = SampleNum.SampleNum_REDIS_Scheme_No.getValue ());
    } else {
        sampleNum = (int) redisTemplate.opsForValue().get(String.valueOf(SampleNum.SampleNum_REDIS_Scheme_No.getName ()));
    }
    String sampleplanCode = IdUtil.getLocalTrmSeqNum(name, sampleNum);
    String dateFormat = new SimpleDateFormat("yyyyMM").format(new Date());
    if (StringUtil.isNullOrEmpty(redisTemplate.opsForValue().get(SampleNum.Sample_DateFormat.getName ()))) {
        redisTemplate.opsForValue().set("dateFormat", dateFormat);
    }
    if (!dateFormat.equals(redisTemplate.opsForValue().get(SampleNum.Sample_DateFormat.getName ()))) {
        sampleNum = SampleNum.SampleNum_REDIS_Scheme_No.getValue ();
        redisTemplate.opsForValue().set("sampleNum", sampleNum );
        redisTemplate.opsForValue().set("dateFormat", dateFormat);
    } else {
        redisTemplate.opsForValue().set("sampleNum", sampleNum + SampleNum.SampleNum_variant.getValue ());

    }
    //解锁
    boolean flag=redisTool.releaseLock (sampleplanCodeKey,sampleplanCodeId  );
    if(flag){
        log.info ("==================解锁成功=================");
    }else{
        throw  BusinessException.define ( "网络缓慢,请重试!" );
    }