Redis and memcached differences

1. Redis and memcache all store data in memory, which is the memory database. But Memcache can also be used to cache other things, such as films, videos and so on;

2,Redis not only support simple k/v type of data, but also provide list,set,hash and other data structure storage;

3, virtual memory --redis when the physical memory is exhausted, you can swap some long-useless value to disk;

4. Expiration policy --memcache is specified when set, such as set Key1 0 0 8, which never expires. Redis can be set through, for example , expire, such as expire name;

5, distributed -set memcache cluster, using magent to do a master more from ; Redis can do a master multi-slave. Can be one master one from;

6, Storage data security --memcache hang up, the data is gone;Redis can be saved to disk (persistent) on a regular basis;

7. after the disaster recovery--memcache hangs, the data cannot be recovered ; Redis data can be recovered by aof after loss;

8,redis support data backup, that is, master-slave mode of data backup;

9, the application scenario is notthe same: Redis out as a NoSQL database use, but also used for Message Queuing, data stacks and data caching, etc.memcached is suitable for caching SQL statements, datasets, temporary user data, deferred query data, and Session, etc.

Redis and memcached differences