Redis VS Memcached

1. Redis & memecached Comparison

	Memory management	Persistence of	Data type	Client Support	Concurrency performance
Memcached	How the memory pool is pre-allocated	Persistence is not supported	Support for simple key-value storage	Rich and diverse client support	Weaker than Redis
Redis	On-site application of memory to store data	Support Persistence	Supports multiple data structures	Rich and diverse client support	Excellent performance

2. The difference between Redis and memcached:

(1) Redis not only supports simple k/v types of data, but also provides storage of data structures such as List,set,zset,hash.
(2) Redis support data backup, that is, Master-slave mode of data backup.
(3) Redis support data persistence, you can keep the in-memory data on the disk, restart the time can be loaded again for use.

3. Redis usage Scenario (1) The best way to use Redis is to in-memory all data. (2) Redis more scenes are used as substitutes for memcached. (3) Redis is more appropriate when it is necessary to support more data types than Key/value. (4) Using Redis is more appropriate when the stored data cannot be excluded.

Redis VS Memcached