Redis 使用标准版本标记进行版本控制：major.minor.patchlevel。偶数的版本号表示稳定的版本， 例如 1.2，2.0，2.2，2.4，2.6，2.8，奇数的版本号用来表示非标准版本,例如2.9.x是非稳定版本，它的稳定版本是3.0。
非稳定版This is where all the development happens. Only for hard-core hackers. Use only if you need to test the latest features or performance improvements. This is going to be the next Redis release in a few months.
稳定版 (5.0)Redis 5.0 是第一个加入流数据类型（stream data type ）的版本，sorted sets blocking pop operations, LFU/LRU info in RDB, Cluster manager inside redis-cli, active defragmentation V2, HyperLogLogs improvements and many other improvements. Redis 5 was release as GA in October 2018.
DockerIt is possible to get Docker images of Redis from the Docker Hub. Multiple versions are available, usually updated in a short time after a new release is available.
Old (4.0)Redis 4.0 was released as GA in July 2017, newcomers should use Redis 5, but Redis 4 is currently the most production-proven release and will be updated for the next year until Redis 6 will be out. It contains several big improvements: a modules system, much better replication (PSYNC2), improvements to eviction policies, threaded DEL/FLUSH, mixed RDB+AOF format, Raspberry Pi support as primary platform, the new MEMORY command, Redis Cluster support for Nat/Docker, active memory defragmentation, memory usage and performance improvements, much faster Redis Cluster key creation, many other smaller features and a number of behavior fixed.
See the release notes or download 4.0.11.
*更多更多的历史版本可以通过 Google Code进行下载。
Scripts and other automatic downloads can easily access the tarball of the latest Redis stable version at http://download.redis.io/redis-stable.tar.gz. The source code of the latest stable release is always browsable here, use the file src/version.h in order to extract the version in an automatic way.
The Github repository redis-hashes contains a README file with SHA1 digests of released tarball archives. Note: the generic redis-stable.tar.gz tarball does not match any hash because it is modified to untar to the redis-stable directory.
$ wget http://download.redis.io/releases/redis-5.0.2.tar.gz $ tar xzf redis-5.0.2.tar.gz $ cd redis-5.0.2 $ make
$ src/redis-cli redis> set foo bar OK redis> get foo "bar"