redis入门开始

1.安装环境

官网：https://redis.io/
我已经下载好了
redis-6.0.3.tar.gz

我的下载目录为/opt下面
解压

tar -zxvf redis-6.0.3.tar.gz redis-6.0.3/utils/hyperloglog/hll-gnuplot-graph.rb
redis-6.0.3/utils/install_server.sh
redis-6.0.3/utils/lru/
redis-6.0.3/utils/lru/README
redis-6.0.3/utils/lru/lfu-simulation.c
redis-6.0.3/utils/lru/test-lru.rb
redis-6.0.3/utils/redis-copy.rb
redis-6.0.3/utils/redis-sha1.rb
redis-6.0.3/utils/redis_init_script
redis-6.0.3/utils/redis_init_script.tpl
redis-6.0.3/utils/releasetools/

安装依赖环境

yum install gcc-c++

查看环境安装

gcc -v

make 之后的
[root@VM_0_11_centos redis-6.0.3]# make
cd src && make all
make[1]: Entering directory `/home/A/redis-6.0.3/src'Hint: It's a good idea to run 'make test' ;)make[1]: Leaving directory `/home/A/redis-6.0.3/src'
[root@VM_0_11_centos redis-6.0.3]#
[root@VM_0_11_centos redis-6.0.3]# make install
cd src && make install
make[1]: Entering directory `/home/A/redis-6.0.3/src'Hint: It's a good idea to run 'make test' ;)INSTALL installINSTALL installINSTALL installINSTALL installINSTALL install
make[1]: Leaving directory `/home/A/redis-6.0.3/src'
[root@VM_0_11_centos redis-6.0.3]#

如果你make报错.原因可能是：
如果你用的redis 6.0以上，那么你的gcc版本低
解决办法：我的默认gcc应该是4.8.5
你可以选择升级一下
原文：升级gcc

使用scl升级gcc
//安装scl源
yum -y install centos-release-scl
//升级
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils
//scl命令启用只是临时的，退出shell或重启就会恢复原系统gcc版本
scl enable devtoolset-9 bash
//长久使用gcc 升级版
echo "source /opt/rh/devtoolset-9/enable" >>/etc/profile

我此时的gcc版本

[root@VM_0_11_centos bin]# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,fortran,lto --prefix=/opt/rh/devtoolset-9/root/usr --mandir=/opt/rh/devtoolset-9/root/usr/share/man --infodir=/opt/rh/devtoolset-9/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --with-default-libstdcxx-abi=gcc4-compatible --enable-plugin --enable-initfini-array --with-isl=/builddir/build/BUILD/gcc-9.1.1-20190605/obj-x86_64-redhat-linux/isl-install --disable-libmpx --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 9.1.1 20190605 (Red Hat 9.1.1-2) (GCC)

redis的默认安装路径
执行make install 你的目录应该是这样的

[root@VM_0_11_centos bin]# pwd
/usr/local/bin
[root@VM_0_11_centos bin]# ls
jemalloc-config   luajit        myredisfonfig    redis-cli
jemalloc.sh       luajit-2.0.4  redis-benchmark  redis-sentinel
jeprof            mcrypt        redis-check-aof  redis-server
libmcrypt-config  mdecrypt      redis-check-rdb
[root@VM_0_11_centos bin]#

将安装好的配置文件复制到/usr/local/bin/myconfig目录下
方便以后启动指定配置文件 目录名我叫myconfig

redis默认不是后台启动的，我们将他改为后台启动
我们将redis.conf 配置文件改为yes

# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
daemonize yes

启动redis 服务 指定配置文件

[root@VM_0_11_centos bin]# redis-cli myconfig/redis.conf
(error) ERR unknown command `myconfig/redis.conf`, with args beginning with:
[root@VM_0_11_centos bin]# redis-server myconfig/redis.conf
11234:C 25 May 2020 16:11:54.616 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
11234:C 25 May 2020 16:11:54.616 # Redis version=6.0.3, bits=64, commit=00000000, modified=0, pid=11234, just started
11234:C 25 May 2020 16:11:54.616 # Configuration loaded

开始连接

[root@VM_0_11_centos bin]# redis-cli -h 127.0.0.1 -p 6379
127.0.0.1:6379> ping
PONG
127.0.0.1:6379>
测试连接成功

基础测试

127.0.0.1:6379> set a a
OK
127.0.0.1:6379> get a
"a"
127.0.0.1:6379> keys *
1) "a"

查看redis服务是否启动成功

[root@VM_0_11_centos ~]# ps -ef |grep redis
root     11916  1981  0 16:16 pts/0    00:00:00 redis-cli -h 127.0.0.1 -p 6379
root     11923 11711  0 16:16 pts/1    00:00:00 grep --color=auto redis
root     32326     1  0 11:26 ?        00:00:25 redis-server 127.0.0.1:6379

关闭服务，退出连接·

[root@VM_0_11_centos bin]# redis-cli -h 127.0.0.1 -p 6379
127.0.0.1:6379> shutdown
not connected> exit
[root@VM_0_11_centos ~]# ps -ef |grep redis
root     12301 11711  0 16:19 pts/1    00:00:00 grep --color=auto redis

2.基本操作

测试性能
redis-benchmark工具
100个连接，100000个请求

[root@VM_0_11_centos bin]# redis-server myconfig/redis.conf
12667:C 25 May 2020 16:21:55.241 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
12667:C 25 May 2020 16:21:55.241 # Redis version=6.0.3, bits=64, commit=00000000, modified=0, pid=12667, just started
12667:C 25 May 2020 16:21:55.241 # Configuration loaded
[root@VM_0_11_centos bin]# redis-cli -h 127.0.0.1 -p 6379
127.0.0.1:6379> exit
[root@VM_0_11_centos bin]# redis-benchmark -h 127.0.0.1 -p 6379 -c 100 -n 100000

  100000 requests completed in 2.11 seconds100 parallel clients3 bytes payloadkeep alive: 1host configuration "save": 900 1 300 10 60 10000host configuration "appendonly": nomulti-thread: no在2.11秒内完成100000个请求100个并行客户端3字节有效载荷保持生命：1主机配置“保存”：900 1 300 10 60 10000主机配置“ appendonly”：否多线程：否

处理时间

 0.00% <= 0.8 milliseconds
0.02% <= 0.9 milliseconds
5.97% <= 1.0 milliseconds
14.51% <= 1.1 milliseconds
23.21% <= 1.2 milliseconds
31.88% <= 1.3 milliseconds
40.60% <= 1.4 milliseconds
49.34% <= 1.5 milliseconds
58.10% <= 1.6 milliseconds
66.79% <= 1.7 milliseconds
75.55% <= 1.8 milliseconds
84.30% <= 1.9 milliseconds
93.02% <= 2 milliseconds
99.54% <= 3 milliseconds
99.81% <= 4 milliseconds
99.90% <= 5 milliseconds
99.96% <= 6 milliseconds
100.00% <= 6 milliseconds
47393.37 requests per second