过期的Memcache项目会自动删除吗？

Question

I set an item in memcache at 00:54 this morning with an expiration time of 30 minutes. When I came back to the office this morning, I called the same key from memcache and was surprised to retrieve it as it was meant to have expired. Will the item only get removed if memcache runs out of memory? Or is it more likely that there is an error in my script?

I am using PHP and the memcache object.

Answer 1

内存快取的密钥一旦达到有效期限，对其进行检索将返回与尝试检索不存在的密钥相同的结果。