Redis配置项

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INCLUDES 指令

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//包含其他配置文件
include /path/to/local.conf

MODULES 模块

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//包含其他模块
loadmodule /path/to/my_module.so

NETWORK 模块

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bind 127.0.0.1
//开启保护模式，如果未设置绑定IP或者绑定IP是0.0.0.0，则必须设置密码，防止未设置密码情况下被外网访问
protected-mode yes
port 6379
//设置生效指需要和/proc/sys/net/core/somaxconn 取最小值
tcp-backlog 50000
unixsocket /tmp/redis.sock
unixsocketperm 700
timeout 0
tcp-keepalive 300

GENERAL 模块

daemonize yes
//设置通过upstart、systemd来管理redis进程
supervised no
pidfile redis.pid
loglevel warning
logfile “”
syslog-enabled no
syslog-ident redis
syslog-facility local0
databases 16
always-show-logo yes

SNAPSHOTTING

save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ${redisPath}

REPLICATION

slaveof
masterauth
//与主服务器断开后依然响应客户端的请求
slave-serve-stale-data yes
slave-read-only yes
//当从服务器连接上主服务器时，需要同步所有数据，此时主服务器有2中策略，生成rdb到文件中，然后把文件传输给从服务器，二是把rdb直接通过socket传给从服务器，默认使用socket
repl-diskless-sync no
//等待多个slave连接上来的时间
repl-diskless-sync-delay 5
repl-ping-slave-period 10
repl-timeout 60
repl-disable-tcp-nodelay no
//待同步缓冲区大小，避免从服务器每次重连后做全量同步
repl-backlog-size 1mb
repl-backlog-ttl 3600
//服务器权重，当主服务器挂掉后选举权重
slave-priority 100
//10秒内至少需要3个从在线，否则停止写
min-slaves-to-write 3
min-slaves-max-lag 10

SECURITY

requirepass foobared
rename-command CONFIG “”

CLIENTS

maxclients 10000

MEMORY MANAGEMENT

maxmemory

// volatile-lru -> Evict using approximated LRU among the keys with an expire set.
// allkeys-lru -> Evict any key using approximated LRU.
// volatile-lfu -> Evict using approximated LFU among the keys with an expire set.
// allkeys-lfu -> Evict any key using approximated LFU.
// volatile-random -> Remove a random key among the ones with an expire set.
// allkeys-random -> Remove a random key, any key.
// volatile-ttl -> Remove the key with the nearest expire time (minor TTL)
// noeviction -> Don’t evict anything, just return an error on write operations.
maxmemory-policy noeviction
maxmemory-samples 5

LAZY FREEING

lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
slave-lazy-flush no

APPEND ONLY MODE

appendonly no
appendfilename “appendonly.aof”
//no、always、everysec
appendfsync everysec
//当正在rewrite的时候不刷盘
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
//redis在恢复时，会忽略最后一条可能存在问题的指令
aof-load-truncated yes
//混合持久化
aof-use-rdb-preamble no

LUA SCRIPTING

lua-time-limit 5000

REDIS CLUSTER

cluster-enabled yes
cluster-config-file nodes-6379.conf
cluster-node-timeout 15000
cluster-slave-validity-factor 10
cluster-migration-barrier 1
cluster-require-full-coverage yes
cluster-slave-no-failover no

CLUSTER DOCKER/NAT support

cluster-announce-ip 10.1.1.5
cluster-announce-port 6379
cluster-announce-bus-port 6380

SLOW LOG

slowlog-log-slower-than 10000
slowlog-max-len 128

LATENCY MONITOR

latency-monitor-threshold 0

EVENT NOTIFICATION

notify-keyspace-events “”

ADVANCED CONFIG

hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
//主动reshash，cpu时间的1%
activerehashing yes
//强制关闭没有及时读缓冲区的客户端 client-output-buffer-limit
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
client-query-buffer-limit 1gb
proto-max-bulk-len 512mb
hz 10
aof-rewrite-incremental-fsync yes
lfu-log-factor 10
lfu-decay-time 1

ACTIVE DEFRAGMENTATION

activedefrag yes
active-defrag-ignore-bytes 100mb
active-defrag-threshold-lower 10
active-defrag-threshold-upper 100
active-defrag-cycle-min 25
active-defrag-cycle-max 75