protostuff工具的使用

pom.xml文件引入依赖：

<!--protostuff序列化工具，效率和内存都很高-->
        <dependency>
            <groupId>com.dyuproject.protostuff</groupId>
            <artifactId>protostuff-core</artifactId>
            <version>1.0.8</version>
        </dependency>
        <dependency>
            <groupId>com.dyuproject.protostuff</groupId>
            <artifactId>protostuff-runtime</artifactId>
            <version>1.0.8</version>
        </dependency>

Redis.dao类中的使用：

public class RedisDao {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    private final JedisPool jedisPool;
    private final String password;

    private RuntimeSchema<Seckill> schema = RuntimeSchema.createFrom(Seckill.class);

    public RedisDao(String ip, int port,String password) {
        jedisPool = new JedisPool(ip, port);
        this.password = password;
    }

    /**
     * 得到缓存中的seckill
     *
     * @param seckillId
     * @return
     */
    public Seckill getSeckill(long seckillId) {
        //Redis操作逻辑
        try {
            Jedis jedis = jedisPool.getResource();
            jedis.auth(password);
            try {
                String key = "seckill:" + seckillId;
                //并没有实现内部序列化操作
                //get->byte[]->反序列化->Object(Seckill)
                //采用自定义序列化，将对象转换成二进制数组，传递给redis缓存起来
                //protostuff : pojo
                byte[] bytes = jedis.get(key.getBytes());
                //缓存中获取到
                if (bytes != null) {
                    //通过schema构造空对象
                    Seckill seckill = schema.newMessage();
                 ProtostuffIOUtil.mergeFrom(bytes, seckill, schema);
                    //seckill被反序列化
                    return seckill;
                }
            } finally {
                jedis.close();
            }
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return null;
    }

    /**
     * 如果缓存中没有，则put一个进去
     *
     * @param seckill
     * @return
     */
    public String putSeckill(Seckill seckill) {
        try {
            Jedis jedis = jedisPool.getResource();
            jedis.auth(password);
            try {
                String key = "seckill:" + seckill.getSeckillId();
                byte[] bytes = ProtostuffIOUtil.toByteArray(seckill, schema,
                        LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE));
                //调用jedis.setex(key,timeout,bytes)
                //超时缓存,缓存一小时
                int timeout = 60*60;
                String result = jedis.setex(key.getBytes(), timeout, bytes);
                return result;
            } finally {
                jedis.close();
            }
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return null;
    }
}