使用这种缓存方式，单元格会以序列化的方式保存在内存中，这是降低内存使用率性能比较高的一种方案。

Using this caching method, cells are held in PHP memory as an array of serialized objects, which reduces the memory footprint with minimal performance overhead.

youdao

通过以这种方式使用缓存，可以减轻云服务停机造成的影响。

By using a cache in this way, the effects of a cloud service outage can be mitigated.

youdao