Redis配置文件：redis.conf学习
单位
# 1k => 1000 bytes
# 1kb => 1024 bytes
# 1m => 1000000 bytes
# 1mb => 1024*1024 bytes
# 1g => 1000000000 bytes
# 1gb => 1024*1024*1024 bytes
# 大小单位，忽略大小写
# units are case insensitive so 1GB 1Gb 1gB are all the same.
子文件
################################## INCLUDES ###################################
# 嵌套其他子配置文件
# include .\path\to\local.conf
# include c:\path\to\other.conf
配置IP和端口号
# Examples:
# 配置IP地址
# bind 192.168.1.100 10.0.0.1
# bind 127.0.0.1 ::1
# 设置保护模式
protected-mode yes
# If port 0 is specified Redis will not listen on a TCP socket.
# 配置端口号
port 6379
通用配置
################################# GENERAL #####################################
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
# 以守护进程的方式运行(避免你退出后，进程结束)，默认是no，yes开启
# NOT SUPPORTED ON WINDOWS daemonize no
# 用于管理守护进程，默认是NO，一般不用动
# NOT SUPPORTED ON WINDOWS supervised no
# nothing bad happens, the server will start and run normally.
# 如果以后台方式（守护进程）运行，就需要个一个PID文件
# NOT SUPPORTED ON WINDOWS pidfile /var/run/redis.pid
# Specify the server verbosity level.
# This can be one of:
# 用于开发和测试
# debug (a lot of information, useful for development/testing)
# 类似于debug
# verbose (many rarely useful info, but not a mess like the debug level)
# 比较有用的信息
# notice (moderately verbose, what you want in production probably)
# 非常重要的信息
# warning (only very important / critical messages are logged)
# 设置日志级别
loglevel notice
# Specify the log file name. Also 'stdout' can be used to force
# Redis to log on the standard output.
# 日志的文件日志名
logfile ""
# dbid is a number between 0 and 'databases'-1
# 16个数据库
databases 16
快照
# It is also possible to remove all the previously configured save
# points by adding a save directive with a single empty string argument
# like in the following example:
# 在规定的时间内，执行了多少次操作，则会持久化到文件.rdb .aof
# save ""
save 900 1
save 300 10
save 60 10000
# permissions, and so forth.
# 持久化失败后，是否继续工作
stop-writes-on-bgsave-error yes
# the dataset will likely be bigger if you have compressible values or keys.
# 压缩rdb文件，需要消耗一些资源（CPU），如果CPU过高可以关掉
rdbcompression yes
# tell the loading code to skip the check.
# 保存rdb文件的时候，进行检查，校验错误
rdbchecksum yes
# The filename where to dump the DB
# rdb的文件名
dbfilename dump.rdb
# Note that you must specify a directory here, not a file name.
# rdb文件保存的路径
dir ./
安全
# use a very strong password otherwise it will be very easy to break.
# 设置redis的密码
# requirepass 123123
# requirepass foobared
# an error 'max number of clients reached'.
# 限制最大连接客户端
# maxclients 10000
# reported by the INFO command.
# redis配置的最大内存容量
# maxmemory <bytes>
# volatile-lru -> remove the key with an expire set using an LRU algorithm 只对设置了过期时间的key进行LRU
# allkeys-lru -> remove any key according to the LRU algorithm 删除LRU算法的key
# volatile-random -> remove a random key with an expire set 随即删除即将过期KEY
# allkeys-random -> remove a random key, any key 随即删除
# volatile-ttl -> remove the key with the nearest expire time (minor TTL) 删除即将过期的
# noeviction -> don't expire at all, just return an error on write operations 永不过期，返回错误
#
# Note: with any of the above policies, Redis will return an error on write
# operations, when there are no suitable keys for eviction.
#
# At the date of writing these commands are: set setnx setex append
# incr decr rpush lpush rpushx lpushx linsert lset rpoplpush sadd
# sinter sinterstore sunion sunionstore sdiff sdiffstore zadd zincrby
# zunionstore zinterstore hset hsetnx hmset hincrby incrby decrby
# getset mset msetnx exec sort
#
# The default is:
# 内存达到上限后的处理策略
# maxmemory-policy noeviction
APPEND ONLY模式 aof配置
# 默认是不开启aof模式的，默认是RDB持久化，大部分情况下，rdb够用
appendonly no
# The name of the append only file (default: "appendonly.aof")
# aof持久化的文件名
appendfilename "appendonly.aof"
# If unsure, use "everysec".
#每次持久化都会sync，消耗性能
# appendfsync always
#每秒执行sync，可能会丢失这一秒的数据
appendfsync everysec
# 永不sync，这个时候操作系统自己去执行同步，速度最快！
# appendfsync no