分布式开发中，主键常为uuid，这种情况应该怎样分片呢？

就拿这段数据来举例吧：

List<Order> orders=new ArrayList<>();

{
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标A型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标B型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标C型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标D型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标E型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标F型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标G型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标H型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标I型"));
    orders.add(new Order(UUID.randomUUID().toString(),"逻辑鼠标J型"));
}