1. Redis and memcache all store data in memory, which is the memory database. But memcache can also be used to cache other things, examples, videos, and so on. 2, Redis not only supports simple k/v types of data, but also provides data structures such as List,set,hash storage. 3, virtual memory--redis when physical memory is exhausted, you can swap some long-unused value to disk 4, expiration policy--memcache when set, such as set Key1 0 0 8, which never expires. Redis can be used For example expire settings, such as expire name5, distributed-set memcache cluster, using Magent to do a master multi-slave, Redis can do a master multi-slave. Can be a master one from 6, storage data security--memcache hangs, the data is gone; Redis can be saved periodically to disk (persistent) 7, the disaster recovery--memcache hangs, the data is not recoverable; Redis data loss can be restored by AOF 8, Redis support data backup, that is, Master-slave mode of data backup.
The difference between Redis and memcache
