Redis 官网上只提供了源码的安装方式，并非像 MySQL 那样有 dmg 安装包，手动下载源码包，也可以在终端中下载。

    1. $ curl -O https://download.redis.io/releases/redis-6.2.5.tar.gz
    2. $ tar -zxf redis-6.2.5.tar.gz

    编译安装：

    1. $ cd redis-6.2.5
    2. $ sudo make
    3. $ sudo make test
    4. $ sudo make isntall

    出现报错：

    1. You need tcl 8.5 or newer in order to run the Redis test
    2. make[1]: *** [test] Error 1

    解决办法：

    1. $ sudo apt install -y tcl-dev
    2. $ make distclean

    编译之后，你会发现 /usr/local/bin/ 下会生成 redis 的执行文件：

    1. ❯ ls -l /usr/local/bin | grep redis
    2. -rwxr-xr-x  1 root       admin   427248 Aug  6 23:21 redis-benchmark
    3. lrwxr-xr-x  1 root       admin       12 Aug  6 23:21 redis-check-aof -> redis-server
    4. lrwxr-xr-x  1 root       admin       12 Aug  6 23:21 redis-check-rdb -> redis-server
    5. -rwxr-xr-x  1 root       admin   345360 Aug  6 23:21 redis-cli
    6. lrwxr-xr-x  1 root       admin       12 Aug  6 23:21 redis-sentinel -> redis-server
    7. -rwxr-xr-x  1 root       admin  1835440 Aug  6 23:21 redis-server

    完成上述操作后，会在 redis-6.2.5 目录里找到一个 redis.conf 的配置文件,打开编辑此配置文件,找到 dir ./ 这一行配置修改成：

    1. dir /home/yumingmin/redisdb

    然后将该文件复制到 /etc 目录下：

    1. $ sudo cp redis.conf /etc
    2. $ sudo chmod 777 /etc/redis.conf

    启动：

    1. $ redis-server /etc/redis.cnf
    2. 21313:C 07 Aug 2021 18:45:23.092 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
    3. 21313:C 07 Aug 2021 18:45:23.092 # Redis version=6.2.5, bits=64, commit=00000000, modified=0, pid=21313, just started
    4. 21313:C 07 Aug 2021 18:45:23.092 # Configuration loaded
    5. 21313:M 07 Aug 2021 18:45:23.093 * Increased maximum number of open files to 10032 (it was originally set to 256).
    6. 21313:M 07 Aug 2021 18:45:23.093 * monotonic clock: POSIX clock_gettime
    7.                 _._
    8.            _.-``__ ''-._
    9.       _.-``    `.  `_.  ''-._           Redis 6.2.5 (00000000/0) 64 bit
    10.   .-`` .-```.  ```\/    _.,_ ''-._
    11.  (    '      ,       .-`  | `,    )     Running in standalone mode
    12.  |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
    13.  |    `-._   `._    /     _.-'    |     PID: 21313
    14.   `-._    `-._  `-./  _.-'    _.-'
    15.  |`-._`-._    `-.__.-'    _.-'_.-'|
    16.  |    `-._`-._        _.-'_.-'    |           https://redis.io
    17.   `-._    `-._`-.__.-'_.-'    _.-'
    18.  |`-._`-._    `-.__.-'    _.-'_.-'|
    19.  |    `-._`-._        _.-'_.-'    |
    20.   `-._    `-._`-.__.-'_.-'    _.-'
    21.       `-._    `-.__.-'    _.-'
    22.           `-._        _.-'
    23.               `-.__.-'
    25. 21313:M 07 Aug 2021 18:45:23.103 # Server initialized
    26. 21313:M 07 Aug 2021 18:45:23.104 * Loading RDB produced by version 6.2.5
    27. 21313:M 07 Aug 2021 18:45:23.104 * RDB age 69238 seconds
    28. 21313:M 07 Aug 2021 18:45:23.104 * RDB memory usage when created 1.01 Mb
    29. 21313:M 07 Aug 2021 18:45:23.104 * DB loaded from disk: 0.001 seconds
    30. 21313:M 07 Aug 2021 18:45:23.104 * Ready to accept connections