Question

我想比较mysql和redis存储空间中的并发减量产品库存，我发现从某些文档中找到spring boot + redisTemplate的某些演示并不容易我将以下代码写入了redis的decr股票

@Bean
JedisConnectionFactory jedisConnectionFactory() {
   return new JedisConnectionFactory();
}

@Bean
RedisTemplate<String, Long> redisTemplate() {
   final RedisTemplate<String, Long> template = new RedisTemplate<String, Long>();
   template.setConnectionFactory(jedisConnectionFactory());
   template.setKeySerializer(new StringRedisSerializer());
   template.setHashValueSerializer(new GenericToStringSerializer<Long>(Long.class));
   template.setValueSerializer(new GenericToStringSerializer<Long>(Long.class));
   return template;
}


private Callable<Void> updateStockInRedisTask = () -> {
    redisTemplate().execute(new RedisCallback<Long>() {
       public Long doInRedis(RedisConnection connection) throws DataAccessException {
           Long decr = connection.decr("1_stock".getBytes());
           return decr;
        }
    });
    return null;
};

它有效，但我觉得它有点麻烦，特别是与jdbcTemplate相比，请看下面

@Autowired
private JdbcTemplate jdbcTemplate;

private Callable<Void> updateStockInMysqlTask = () -> {
    final String sql = "update product_stock set stock = stock-1 where award_id=1 and stock>0";
    jdbcTemplate.update(sql);
    return null;
};

所以我想知道它是否可以简化？

顺便说一句我参考了这些文档：

How autowired RedisTemplate<String,Long>

http://docs.spring.io/spring-data/redis/docs/current/reference/html/

Answer 1

Long stock = redisTemplate.opsForValue().increment("1_stock", -1);

spring boot使用redisTemplate来减少库存

1 个答案: