Redis database

1.redis concept

Redis is an open source (BSD licensed) in-memory data structure store used as a database, cache and message broker.Redis provides data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperlogs, geospatial indexes, and streams.Redis has built-in replication, Lua scripting, LRU eviction, transactions, and different levels of disk persistence, and provides high availability through Redis Sentinel and Redis Cluster automatic partitioning.

Advantages of 2.redis

1.Redis reads 110,000 times/s and writes 81,000 times/s

2. Atom.All operations of Redis are atomic, and Redis also supports the atomic execution of several operations after they are all merged.

3. Supports a variety of data structures: string (string); list (list); hash (hash), set (set); zset (ordered set)

4. Persistence--disk, master-slave replication (cluster)

5.The official does not support the window system, but there is a third-party version.linux system.---