yum install -y https://rpms.remirepo.net/enterprise/remi-release-9.rpm
# yum --enablerepo=remi install redis -y # 默认安装的版本：6.2.20

# 启用其中的Redis 7版本
dnf module reset redis
dnf module enable redis:7

# 查看可安装的redis版本
yum list redis --showduplicates

# 结果是：7.2.11-2.module+el9.7.0+40085+98656c02

# 安装redis7
yum --enablerepo=remi install redis

优化后的参数：
# 如下是默认配置文件中的参数
bind 127.0.0.1
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
pidfile /var/run/redis_6379.pid
loglevel notice
logfile /var/log/redis/redis.log
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 /var/lib/redis
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
requirepass yOnm1MhP7reHJCla

# 如下这些是新增的优化参数
maxmemory 2gb
maxmemory-policy allkeys-lru
io-threads 7
io-threads-do-reads yes
server_cpulist 0-3
bio_cpulist 4-5
aof_rewrite_cpulist 6
bgsave_cpulist 7
activedefrag yes
active-defrag-max-scan-fields 1000
active-defrag-ignore-bytes 100mb
active-defrag-threshold-lower 10
active-defrag-threshold-upper 100
list-max-ziplist-size -2
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
save 900 1
save 300 10
save 60 10000

rename-command CONFIG ""
rename-command FLUSHDB ""
rename-command FLUSHALL ""
rename-command KEYS ""
rename-command DEBUG ""
rename-command SHUTDOWN "REDIS_SHUTDOWN_SUPER_SECRET"
rename-command SLAVEOF ""
rename-command REPLICAOF ""

maxclients 10000