redis笔记

参考 1

博客:Redis 通过 RDB 方式进行数据备份与还原 - WeihanLi - 博客园 (cnblogs.com)
github: Tags · redis/redis (github.com)

Redis 安装与常见操作

初识Redis（一）：Redis简介及数据类型 - 简书 (jianshu.com)

Redis 下载与编译安装

wget https://github.com/redis/redis/archive/refs/tags/7.4.2.tar.gz
mkdir -p /tools/redis
mv 7.4.2.tar.gz /tools/redis/redis_7.4.2.tar.gz
cd /tools/redis
tar xf redis_7.4.2.tar.gz
cd /root/tools/redis/redis-7.4.2

mkdir -p /usr/local/redis
make distclean
make USE_SYSTEMD=yes -j8
make PREFIX=/usr/local/redis install

[root@VM-0-12-centos redis-7.4.2]# ll /usr/local/redis/bin
total 30108
-rwxr-xr-x 1 root root  6819824 Feb  9 18:04 redis-benchmark
lrwxrwxrwx 1 root root       12 Feb  9 18:04 redis-check-aof -> redis-server
lrwxrwxrwx 1 root root       12 Feb  9 18:04 redis-check-rdb -> redis-server
-rwxr-xr-x 1 root root  7801416 Feb  9 18:04 redis-cli
lrwxrwxrwx 1 root root       12 Feb  9 18:04 redis-sentinel -> redis-server
-rwxr-xr-x 1 root root 16207160 Feb  9 18:04 redis-server
[root@VM-0-12-centos redis-7.4.2]# 

查看配置文件
[root@VM-0-12-centos redis-7.4.2]# pwd
/root/tools/redis/redis-7.4.2
[root@VM-0-12-centos redis-7.4.2]# grep -v '^#' redis.conf   |grep -v '^$' 
bind 127.0.0.1 -::1
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile ""
databases 16
always-show-logo no
set-proc-title yes
proc-title-template "{title} {listen-addr} {server-mode}"
locale-collate ""
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
rdb-del-sync-files no
dir ./
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync yes
repl-diskless-sync-delay 5
repl-diskless-sync-max-replicas 0
repl-diskless-load disabled
repl-disable-tcp-nodelay no
replica-priority 100
acllog-max-len 128
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
lazyfree-lazy-user-del no
lazyfree-lazy-user-flush no
oom-score-adj no
oom-score-adj-values 0 200 800
disable-thp yes
appendonly no
appendfilename "appendonly.aof"
appenddirname "appendonlydir"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
aof-timestamp-enabled no
 
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-listpack-entries 512
hash-max-listpack-value 64
list-max-listpack-size -2
list-compress-depth 0
set-max-intset-entries 512
set-max-listpack-entries 128
set-max-listpack-value 64
zset-max-listpack-entries 128
zset-max-listpack-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
jemalloc-bg-thread yes

新建目录并修改配置文件

# 日志目录
mkdir -p /var/log/redis

# data 目录
mkdir -p /data/redis/data_6379

# pid 文件  /var/run/redis_6379.pid

# 构造配置文件 
mkdir -p /etc/redis
cp redis.conf /etc/redis/redis_6379.conf
cat >> /etc/redis/redis_6379.conf <<-"EOF"
bind 127.0.0.1
port 6379
daemonize yes
pidfile /var/run/redis_6379.pid
logfile "/var/log/redis/redis_6379.log"
dir /data/redis/data_6379
appendonly no
appendfilename "appendonly.aof"
appenddirname "appendonlydir"
EOF

# 日志轮转
cat >> /etc/logrotate.d/redis_6379 <<-"EOF"
/var/log/redis/redis.log {
    daily
    rotate 7
    compress
    missingok
    notifempty
    copytruncate
}
EOF

构造服务启停脚本

cat >> /etc/init.d/redis_server <<-"EOF"
#!/bin/sh
#
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the /proc filesystem.

### BEGIN INIT INFO
# Provides:     redis_6379
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    Redis data structure server
# Description:          Redis data structure server. See https://redis.io
### END INIT INFO

REDISPORT=$1
EXEC=/usr/local/redis/bin/redis-server
CLIEXEC=/usr/local/redis/bin/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid
CONF="/etc/redis/redis_${REDISPORT}.conf"

case "$2" in
    start)
        if [ -f $PIDFILE ]
        then
                echo "$PIDFILE exists, process is already running or crashed"
        else
                echo "Starting Redis server..."
                $EXEC $CONF
        fi
        ;;
    stop)
        if [ ! -f $PIDFILE ]
        then
                echo "$PIDFILE does not exist, process is not running"
        else
                PID=$(cat $PIDFILE)
                echo "Stopping ..."
                $CLIEXEC -p $REDISPORT shutdown
                while [ -x /proc/${PID} ]
                do
                    echo "Waiting for Redis to shutdown ..."
                    sleep 1
                done
                echo "Redis stopped"
        fi
        ;;
    *)
        echo "Please use start or stop as first argument"
        ;;
esac
EOF

卸载

/etc/init.d/redis_server 6379 stop
rm -f /var/log/redis/redis_6379.log
rm -rf /data/redis/data_6379
rm -f /var/run/redis_6379.pid
rm -f /etc/redis/redis_6379.conf

Redis发布/订阅及事务

初识Redis（二）：Redis发布/订阅及事务 - 简书 (jianshu.com)

Redis 备份与恢复

初识Redis（三）：Redis数据备份、恢复与持久化 - 简书 (jianshu.com)

Redis 主从复制与分区

初识Redis（四）：Redis主从复制与分区 - 简书 (jianshu.com)