redis.conf配置详细解析
本文内容纲要：
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#redis配置文件示例
#当你需要为某个配置项指定内存大小的时候，必须要带上单位，
#通常的格式就是1k5gb4m等酱紫：
#
#1k=>1000bytes
#1kb=>1024bytes
#1m=>1000000bytes
#1mb=>1024*1024bytes
#1g=>1000000000bytes
#1gb=>1024*1024*1024bytes
#
#单位是不区分大小写的，你写1K5GB4M也行
##################################INCLUDES###################################
#假如说你有一个可用于所有的redisserver的标准配置模板，
#但针对某些server又需要一些个性化的设置，
#你可以使用include来包含一些其他的配置文件，这对你来说是非常有用的。
#
#但是要注意哦，include是不能被configrewrite命令改写的
#由于redis总是以最后的加工线作为一个配置指令值，所以你最好是把include放在这个文件的最前面，
#以避免在运行时覆盖配置的改变，相反，你就把它放在后面（外国人真啰嗦）。
#
#include/path/to/local.conf
#include/path/to/other.conf
################################常用#####################################
#默认情况下redis不是作为守护进程运行的，如果你想让它在后台运行，你就把它改成yes。
#当redis作为守护进程运行的时候，它会写一个pid到/var/run/redis.pid文件里面。
daemonizeno
#当redis作为守护进程运行的时候，它会把pid默认写到/var/run/redis.pid文件里面，
#但是你可以在这里自己制定它的文件位置。
pidfile/var/run/redis.pid
#监听端口号，默认为6379，如果你设为0，redis将不在socket上监听任何客户端连接。
port6379
#TCP监听的最大容纳数量
#
#在高并发的环境下，你需要把这个值调高以避免客户端连接缓慢的问题。
#Linux内核会一声不响的把这个值缩小成/proc/sys/net/core/somaxconn对应的值，
#所以你要修改这两个值才能达到你的预期。
tcp-backlog511
#默认情况下，redis在server上所有有效的网络接口上监听客户端连接。
#你如果只想让它在一个网络接口上监听，那你就绑定一个IP或者多个IP。
#
#示例，多个IP用空格隔开:
#
#bind192.168.1.10010.0.0.1
#bind127.0.0.1
#指定unixsocket的路径。
#
#unixsocket/tmp/redis.sock
#unixsocketperm755
#指定在一个client空闲多少秒之后关闭连接（0就是不管它）
timeout0
#tcp心跳包。
#
#如果设置为非零，则在与客户端缺乏通讯的时候使用SO_KEEPALIVE发送tcpacks给客户端。
#这个之所有有用，主要由两个原因：
#
#1)防止死的peers
#2)Taketheconnectionalivefromthepointofviewofnetwork
#equipmentinthemiddle.
#
#OnLinux,thespecifiedvalue(inseconds)istheperiodusedtosendACKs.
#Notethattoclosetheconnectionthedoubleofthetimeisneeded.
#Onotherkernelstheperioddependsonthekernelconfiguration.
#
#Areasonablevalueforthisoptionis60seconds.
#推荐一个合理的值就是60秒
tcp-keepalive0
#定义日志级别。
#可以是下面的这些值：
#debug(适用于开发或测试阶段)
#verbose(manyrarelyusefulinfo,butnotamesslikethedebuglevel)
#notice(适用于生产环境)
#warning(仅仅一些重要的消息被记录)
loglevelnotice
#指定日志文件的位置
logfile""
#要想把日志记录到系统日志，就把它改成yes，
#也可以可选择性的更新其他的syslog参数以达到你的要求
#syslog-enabledno
#设置syslog的identity。
#syslog-identredis
#设置syslog的facility，必须是USER或者是LOCAL0-LOCAL7之间的值。
#syslog-facilitylocal0
#设置数据库的数目。
#默认数据库是DB0，你可以在每个连接上使用select<dbid>命令选择一个不同的数据库，
#但是dbid必须是一个介于0到databasees-1之间的值
databases16
################################快照################################
#
#存DB到磁盘：
#
#格式：save<间隔时间（秒）><写入次数>
#
#根据给定的时间间隔和写入次数将数据保存到磁盘
#
#下面的例子的意思是：
#900秒内如果至少有1个key的值变化，则保存
#300秒内如果至少有10个key的值变化，则保存
#60秒内如果至少有10000个key的值变化，则保存
#
#注意：你可以注释掉所有的save行来停用保存功能。
#也可以直接一个空字符串来实现停用：
#save""
save9001
save30010
save6010000
#默认情况下，如果redis最后一次的后台保存失败，redis将停止接受写操作，
#这样以一种强硬的方式让用户知道数据不能正确的持久化到磁盘，
#否则就会没人注意到灾难的发生。
#
#如果后台保存进程重新启动工作了，redis也将自动的允许写操作。
#
#然而你要是安装了靠谱的监控，你可能不希望redis这样做，那你就改成no好了。
stop-writes-on-bgsave-erroryes
#是否在dump.rdb数据库的时候使用LZF压缩字符串
#默认都设为yes
#如果你希望保存子进程节省点cpu，你就设置它为no，
#不过这个数据集可能就会比较大
rdbcompressionyes
#是否校验rdb文件
rdbchecksumyes
#设置dump的文件位置
dbfilenamedump.rdb
#工作目录
#例如上面的dbfilename只指定了文件名，
#但是它会写入到这个目录下。这个配置项一定是个目录，而不能是文件名。
dir./
#################################主从复制#################################
#主从复制。使用slaveof来让一个redis实例成为另一个reids实例的副本。
#注意这个只需要在slave上配置。
#
#slaveof<masterip><masterport>
#如果master需要密码认证，就在这里设置
#masterauth<master-password>
#当一个slave与master失去联系，或者复制正在进行的时候，
#slave可能会有两种表现：
#
#1)如果为yes，slave仍然会应答客户端请求，但返回的数据可能是过时，
#或者数据可能是空的在第一次同步的时候
#
#2)如果为no，在你执行除了infohesalveof之外的其他命令时，
#slave都将返回一个"SYNCwithmasterinprogress"的错误，
#
slave-serve-stale-datayes
#你可以配置一个slave实体是否接受写入操作。
#通过写入操作来存储一些短暂的数据对于一个slave实例来说可能是有用的，
#因为相对从master重新同步数而言，据数据写入到slave会更容易被删除。
#但是如果客户端因为一个错误的配置写入，也可能会导致一些问题。
#
#从redis2.6版起，默认slaves都是只读的。
#
#Note:readonlyslavesarenotdesignedtobeexposedtountrustedclients
#ontheinternet.It'sjustaprotectionlayeragainstmisuseoftheinstance.
#Stillareadonlyslaveexportsbydefaultalltheadministrativecommands
#suchasCONFIG,DEBUG,andsoforth.Toalimitedextentyoucanimprove
#securityofreadonlyslavesusing'rename-command'toshadowallthe
#administrative/dangerouscommands.
#注意：只读的slaves没有被设计成在internet上暴露给不受信任的客户端。
#它仅仅是一个针对误用实例的一个保护层。
slave-read-onlyyes
#Slaves在一个预定义的时间间隔内发送ping命令到server。
#你可以改变这个时间间隔。默认为10秒。
#
#repl-ping-slave-period10
#Thefollowingoptionsetsthereplicationtimeoutfor:
#设置主从复制过期时间
#
#1)BulktransferI/OduringSYNC,fromthepointofviewofslave.
#2)Mastertimeoutfromthepointofviewofslaves(data,pings).
#3)Slavetimeoutfromthepointofviewofmasters(REPLCONFACKpings).
#
#Itisimportanttomakesurethatthisvalueisgreaterthanthevalue
#specifiedforrepl-ping-slave-periodotherwiseatimeoutwillbedetected
#everytimethereislowtrafficbetweenthemasterandtheslave.
#这个值一定要比repl-ping-slave-period大
#
#repl-timeout60
#DisableTCP_NODELAYontheslavesocketafterSYNC?
#
#Ifyouselect"yes"RediswilluseasmallernumberofTCPpacketsand
#lessbandwidthtosenddatatoslaves.Butthiscanaddadelayfor
#thedatatoappearontheslaveside,upto40millisecondswith
#Linuxkernelsusingadefaultconfiguration.
#
#Ifyouselect"no"thedelayfordatatoappearontheslavesidewill
#bereducedbutmorebandwidthwillbeusedforreplication.
#
#Bydefaultweoptimizeforlowlatency,butinveryhightrafficconditions
#orwhenthemasterandslavesaremanyhopsaway,turningthisto"yes"may
#beagoodidea.
repl-disable-tcp-nodelayno
#设置主从复制容量大小。这个backlog是一个用来在slaves被断开连接时
#存放slave数据的buffer，所以当一个slave想要重新连接，通常不希望全部重新同步，
#只是部分同步就够了，仅仅传递slave在断开连接时丢失的这部分数据。
#
#Thebiggestthereplicationbacklog,thelongerthetimetheslavecanbe
#disconnectedandlaterbeabletoperformapartialresynchronization.
#这个值越大，salve可以断开连接的时间就越长。
#
#Thebacklogisonlyallocatedoncethereisatleastaslaveconnected.
#
#repl-backlog-size1mb
#Afteramasterhasnolongerconnectedslavesforsometime,thebacklog
#willbefreed.Thefollowingoptionconfigurestheamountofsecondsthat
#needtoelapse,startingfromthetimethelastslavedisconnected,for
#thebacklogbuffertobefreed.
#在某些时候，master不再连接slaves，backlog将被释放。
#
#Avalueof0meanstoneverreleasethebacklog.
#如果设置为0，意味着绝不释放backlog。
#
#repl-backlog-ttl3600
#当master不能正常工作的时候，RedisSentinel会从slaves中选出一个新的master，
#这个值越小，就越会被优先选中，但是如果是0，那是意味着这个slave不可能被选中。
#
#默认优先级为100。
slave-priority100
#Itispossibleforamastertostopacceptingwritesiftherearelessthan
#Nslavesconnected,havingalaglessorequalthanMseconds.
#
#TheNslavesneedtobein"online"state.
#
#Thelaginseconds,thatmustbe<=thespecifiedvalue,iscalculatedfrom
#thelastpingreceivedfromtheslave,thatisusuallysenteverysecond.
#
#ThisoptiondoesnotGUARANTEESthatNreplicaswillacceptthewrite,but
#willlimitthewindowofexposureforlostwritesincasenotenoughslaves
#areavailable,tothespecifiednumberofseconds.
#
#Forexampletorequireatleast3slaveswithalag<=10secondsuse:
#
#min-slaves-to-write3
#min-slaves-max-lag10
#
#Settingoneortheotherto0disablesthefeature.
#
#Bydefaultmin-slaves-to-writeissetto0(featuredisabled)and
#min-slaves-max-lagissetto10.
##################################安全###################################
#RequireclientstoissueAUTH<PASSWORD>beforeprocessinganyother
#commands.Thismightbeusefulinenvironmentsinwhichyoudonottrust
#otherswithaccesstothehostrunningredis-server.
#
#Thisshouldstaycommentedoutforbackwardcompatibilityandbecausemost
#peopledonotneedauth(e.g.theyruntheirownservers).
#
#Warning:sinceRedisisprettyfastanoutsideusercantryupto
#150kpasswordspersecondagainstagoodbox.Thismeansthatyoushould
#useaverystrongpasswordotherwiseitwillbeveryeasytobreak.
#
#设置认证密码
#requirepassfoobared
#Commandrenaming.
#
#Itispossibletochangethenameofdangerouscommandsinashared
#environment.ForinstancetheCONFIGcommandmayberenamedintosomething
#hardtoguesssothatitwillstillbeavailableforinternal-usetools
#butnotavailableforgeneralclients.
#
#Example:
#
#rename-commandCONFIGb840fc02d524045429941cc15f59e41cb7be6c52
#
#Itisalsopossibletocompletelykillacommandbyrenamingitinto
#anemptystring:
#
#rename-commandCONFIG""
#
#Pleasenotethatchangingthenameofcommandsthatareloggedintothe
#AOFfileortransmittedtoslavesmaycauseproblems.
###################################限制####################################
#Setthemaxnumberofconnectedclientsatthesametime.Bydefault
#thislimitissetto10000clients,howeveriftheRedisserverisnot
#abletoconfiguretheprocessfilelimittoallowforthespecifiedlimit
#themaxnumberofallowedclientsissettothecurrentfilelimit
#minus32(asRedisreservesafewfiledescriptorsforinternaluses).
#
#一旦达到最大限制，redis将关闭所有的新连接
#并发送一个‘maxnumberofclientsreached’的错误。
#
#maxclients10000
#如果你设置了这个值，当缓存的数据容量达到这个值，redis将根据你选择的
#eviction策略来移除一些keys。
#
#如果redis不能根据策略移除keys，或者是策略被设置为‘noeviction’，
#redis将开始响应错误给命令，如set，lpush等等，
#并继续响应只读的命令，如get
#
#ThisoptionisusuallyusefulwhenusingRedisasanLRUcache,ortoset
#ahardmemorylimitforaninstance(usingthe'noeviction'policy).
#
#WARNING:Ifyouhaveslavesattachedtoaninstancewithmaxmemoryon,
#thesizeoftheoutputbuffersneededtofeedtheslavesaresubtracted
#fromtheusedmemorycount,sothatnetworkproblems/resyncswill
#nottriggeraloopwherekeysareevicted,andinturntheoutput
#bufferofslavesisfullwithDELsofkeysevictedtriggeringthedeletion
#ofmorekeys,andsoforthuntilthedatabaseiscompletelyemptied.
#
#Inshort...ifyouhaveslavesattacheditissuggestedthatyousetalower
#limitformaxmemorysothatthereissomefreeRAMonthesystemforslave
#outputbuffers(butthisisnotneededifthepolicyis'noeviction').
#
#最大使用内存
#maxmemory<bytes>
#最大内存策略，你有5个选择。
#
#volatile-lru->removethekeywithanexpiresetusinganLRUalgorithm
#volatile-lru->使用LRU算法移除包含过期设置的key。
#allkeys-lru->removeanykeyaccordinglytotheLRUalgorithm
#allkeys-lru->根据LRU算法移除所有的key。
#volatile-random->removearandomkeywithanexpireset
#allkeys-random->removearandomkey,anykey
#volatile-ttl->removethekeywiththenearestexpiretime(minorTTL)
#noeviction->don'texpireatall,justreturnanerroronwriteoperations
#noeviction->不让任何key过期，只是给写入操作返回一个错误
#
#Note:withanyoftheabovepolicies,Rediswillreturnanerroronwrite
#operations,whentherearenotsuitablekeysforeviction.
#
#Atthedateofwritingthiscommandsare:setsetnxsetexappend
#incrdecrrpushlpushrpushxlpushxlinsertlsetrpoplpushsadd
#sintersinterstoresunionsunionstoresdiffsdiffstorezaddzincrby
#zunionstorezinterstorehsethsetnxhmsethincrbyincrbydecrby
#getsetmsetmsetnxexecsort
#
#Thedefaultis:
#
#maxmemory-policynoeviction
#LRUandminimalTTLalgorithmsarenotprecisealgorithmsbutapproximated
#algorithms(inordertosavememory),soyoucantuneitforspeedor
#accuracy.FordefaultRediswillcheckfivekeysandpicktheonethatwas
#usedlessrecently,youcanchangethesamplesizeusingthefollowing
#configurationdirective.
#
#Thedefaultof5producesgoodenoughresults.10Approximatesveryclosely
#trueLRUbutcostsabitmoreCPU.3isveryfastbutnotveryaccurate.
#
#maxmemory-samples5
##############################APPENDONLYMODE###############################
#BydefaultRedisasynchronouslydumpsthedatasetondisk.Thismodeis
#goodenoughinmanyapplications,butanissuewiththeRedisprocessor
#apoweroutagemayresultintoafewminutesofwriteslost(dependingon
#theconfiguredsavepoints).
#
#TheAppendOnlyFileisanalternativepersistencemodethatprovides
#muchbetterdurability.Forinstanceusingthedefaultdatafsyncpolicy
#(seelaterintheconfigfile)Rediscanlosejustonesecondofwritesina
#dramaticeventlikeaserverpoweroutage,orasinglewriteifsomething
#wrongwiththeRedisprocessitselfhappens,buttheoperatingsystemis
#stillrunningcorrectly.
#
#AOFandRDBpersistencecanbeenabledatthesametimewithoutproblems.
#IftheAOFisenabledonstartupRediswillloadtheAOF,thatisthefile
#withthebetterdurabilityguarantees.
#
#Pleasecheckhttp://redis.io/topics/persistenceformoreinformation.
appendonlyno
#Thenameoftheappendonlyfile(default:"appendonly.aof")
appendfilename"appendonly.aof"
#Thefsync()calltellstheOperatingSystemtoactuallywritedataondisk
#insteadtowaitformoredataintheoutputbuffer.SomeOSwillreallyflush
#dataondisk,someotherOSwilljusttrytodoitASAP.
#
#Redissupportsthreedifferentmodes:
#
#no:don'tfsync,justlettheOSflushthedatawhenitwants.Faster.
#always:fsyncaftereverywritetotheappendonlylog.Slow,Safest.
#everysec:fsynconlyonetimeeverysecond.Compromise.
#
#Thedefaultis"everysec",asthat'susuallytherightcompromisebetween
#speedanddatasafety.It'suptoyoutounderstandifyoucanrelaxthisto
#"no"thatwilllettheoperatingsystemflushtheoutputbufferwhen
#itwants,forbetterperformances(butifyoucanlivewiththeideaof
#somedatalossconsiderthedefaultpersistencemodethat'ssnapshotting),
#oronthecontrary,use"always"that'sveryslowbutabitsaferthan
#everysec.
#
#Moredetailspleasecheckthefollowingarticle:
#http://antirez.com/post/redis-persistence-demystified.html
#
#Ifunsure,use"everysec".
#appendfsyncalways
appendfsynceverysec
#appendfsyncno
#WhentheAOFfsyncpolicyissettoalwaysoreverysec,andabackground
#savingprocess(abackgroundsaveorAOFlogbackgroundrewriting)is
#performingalotofI/Oagainstthedisk,insomeLinuxconfigurations
#Redismayblocktoolongonthefsync()call.Notethatthereisnofixfor
#thiscurrently,asevenperformingfsyncinadifferentthreadwillblock
#oursynchronouswrite(2)call.
#
#Inordertomitigatethisproblemit'spossibletousethefollowingoption
#thatwillpreventfsync()frombeingcalledinthemainprocesswhilea
#BGSAVEorBGREWRITEAOFisinprogress.
#
#Thismeansthatwhileanotherchildissaving,thedurabilityofRedisis
#thesameas"appendfsyncnone".Inpracticalterms,thismeansthatitis
#possibletoloseupto30secondsoflogintheworstscenario(withthe
#defaultLinuxsettings).
#
#Ifyouhavelatencyproblemsturnthisto"yes".Otherwiseleaveitas
#"no"thatisthesafestpickfromthepointofviewofdurability.
no-appendfsync-on-rewriteno
#Automaticrewriteoftheappendonlyfile.
#Redisisabletoautomaticallyrewritethelogfileimplicitlycalling
#BGREWRITEAOFwhentheAOFlogsizegrowsbythespecifiedpercentage.
#
#Thisishowitworks:RedisremembersthesizeoftheAOFfileafterthe
#latestrewrite(ifnorewritehashappenedsincetherestart,thesizeof
#theAOFatstartupisused).
#
#Thisbasesizeiscomparedtothecurrentsize.Ifthecurrentsizeis
#biggerthanthespecifiedpercentage,therewriteistriggered.Also
#youneedtospecifyaminimalsizefortheAOFfiletoberewritten,this
#isusefultoavoidrewritingtheAOFfileevenifthepercentageincrease
#isreachedbutitisstillprettysmall.
#
#SpecifyapercentageofzeroinordertodisabletheautomaticAOF
#rewritefeature.
auto-aof-rewrite-percentage100
auto-aof-rewrite-min-size64mb
################################LUASCRIPTING###############################
#MaxexecutiontimeofaLuascriptinmilliseconds.
#
#IfthemaximumexecutiontimeisreachedRediswilllogthatascriptis
#stillinexecutionafterthemaximumallowedtimeandwillstartto
#replytoquerieswithanerror.
#
#Whenalongrunningscriptexceedthemaximumexecutiontimeonlythe
#SCRIPTKILLandSHUTDOWNNOSAVEcommandsareavailable.Thefirstcanbe
#usedtostopascriptthatdidnotyetcalledwritecommands.Thesecond
#istheonlywaytoshutdowntheserverinthecaseawritecommandswas
#alreadyissuebythescriptbuttheuserdon'twanttowaitforthenatural
#terminationofthescript.
#
#Setitto0oranegativevalueforunlimitedexecutionwithoutwarnings.
lua-time-limit5000
################################REDIS集群###############################
#
#启用或停用集群
#cluster-enabledyes
#Everyclusternodehasaclusterconfigurationfile.Thisfileisnot
#intendedtobeeditedbyhand.ItiscreatedandupdatedbyRedisnodes.
#EveryRedisClusternoderequiresadifferentclusterconfigurationfile.
#Makesurethatinstancesrunninginthesamesystemdoesnothave
#overlappingclusterconfigurationfilenames.
#
#cluster-config-filenodes-6379.conf
#Clusternodetimeoutistheamountofmillisecondsanodemustbeunreachable
#forittobeconsideredinfailurestate.
#Mostotherinternaltimelimitsaremultipleofthenodetimeout.
#
#cluster-node-timeout15000
#Aslaveofafailingmasterwillavoidtostartafailoverifitsdata
#lookstooold.
#
#Thereisnosimplewayforaslavetoactuallyhaveaexactmeasureof
#its"dataage",sothefollowingtwochecksareperformed:
#
#1)Iftherearemultipleslavesabletofailover,theyexchangemessages
#inordertotrytogiveanadvantagetotheslavewiththebest
#replicationoffset(moredatafromthemasterprocessed).
#Slaveswilltrytogettheirrankbyoffset,andapplytothestart
#ofthefailoveradelayproportionaltotheirrank.
#
#2)Everysingleslavecomputesthetimeofthelastinteractionwith
#itsmaster.Thiscanbethelastpingorcommandreceived(ifthemaster
#isstillinthe"connected"state),orthetimethatelapsedsincethe
#disconnectionwiththemaster(ifthereplicationlinkiscurrentlydown).
#Ifthelastinteractionistooold,theslavewillnottrytofailover
#atall.
#
#Thepoint"2"canbetunedbyuser.Specificallyaslavewillnotperform
#thefailoverif,sincethelastinteractionwiththemaster,thetime
#elapsedisgreaterthan:
#
#(node-timeout*slave-validity-factor)+repl-ping-slave-period
#
#Soforexampleifnode-timeoutis30seconds,andtheslave-validity-factor
#is10,andassumingadefaultrepl-ping-slave-periodof10seconds,the
#slavewillnottrytofailoverifitwasnotabletotalkwiththemaster
#forlongerthan310seconds.
#
#Alargeslave-validity-factormayallowslaveswithtooolddatatofailover
#amaster,whileatoosmallvaluemaypreventtheclusterfrombeingableto
#electaslaveatall.
#
#Formaximumavailability,itispossibletosettheslave-validity-factor
#toavalueof0,whichmeans,thatslaveswillalwaystrytofailoverthe
#masterregardlessofthelasttimetheyinteractedwiththemaster.
#(Howeverthey'llalwaystrytoapplyadelayproportionaltotheir
#offsetrank).
#
#Zeroistheonlyvalueabletoguaranteethatwhenallthepartitionsheal
#theclusterwillalwaysbeabletocontinue.
#
#cluster-slave-validity-factor10
#Clusterslavesareabletomigratetoorphanedmasters,thataremasters
#thatareleftwithoutworkingslaves.Thisimprovestheclusterability
#toresisttofailuresasotherwiseanorphanedmastercan'tbefailedover
#incaseoffailureifithasnoworkingslaves.
#
#Slavesmigratetoorphanedmastersonlyiftherearestillatleasta
#givennumberofotherworkingslavesfortheiroldmaster.Thisnumber
#isthe"migrationbarrier".Amigrationbarrierof1meansthataslave
#willmigrateonlyifthereisatleast1otherworkingslaveforitsmaster
#andsoforth.Itusuallyreflectsthenumberofslavesyouwantforevery
#masterinyourcluster.
#
#Defaultis1(slavesmigrateonlyiftheirmastersremainwithatleast
#oneslave).Todisablemigrationjustsetittoaverylargevalue.
#Avalueof0canbesetbutisusefulonlyfordebugginganddangerous
#inproduction.
#
#cluster-migration-barrier1
#Inordertosetupyourclustermakesuretoreadthedocumentation
#availableathttp://redis.iowebsite.
##################################SLOWLOG###################################
#TheRedisSlowLogisasystemtologqueriesthatexceededaspecified
#executiontime.TheexecutiontimedoesnotincludetheI/Ooperations
#liketalkingwiththeclient,sendingthereplyandsoforth,
#butjustthetimeneededtoactuallyexecutethecommand(thisistheonly
#stageofcommandexecutionwherethethreadisblockedandcannotserve
#otherrequestsinthemeantime).
#
#Youcanconfiguretheslowlogwithtwoparameters:onetellsRedis
#whatistheexecutiontime,inmicroseconds,toexceedinorderforthe
#commandtogetlogged,andtheotherparameteristhelengthofthe
#slowlog.Whenanewcommandisloggedtheoldestoneisremovedfromthe
#queueofloggedcommands.
#Thefollowingtimeisexpressedinmicroseconds,so1000000isequivalent
#toonesecond.Notethatanegativenumberdisablestheslowlog,while
#avalueofzeroforcestheloggingofeverycommand.
slowlog-log-slower-than10000
#Thereisnolimittothislength.Justbeawarethatitwillconsumememory.
#YoucanreclaimmemoryusedbytheslowlogwithSLOWLOGRESET.
slowlog-max-len128
#############################Eventnotification##############################
#RediscannotifyPub/Subclientsabouteventshappeninginthekeyspace.
#Thisfeatureisdocumentedathttp://redis.io/topics/keyspace-events
#
#Forinstanceifkeyspaceeventsnotificationisenabled,andaclient
#performsaDELoperationonkey"foo"storedintheDatabase0,two
#messageswillbepublishedviaPub/Sub:
#
#PUBLISH__keyspace@0__:foodel
#PUBLISH__keyevent@0__:delfoo
#
#ItispossibletoselecttheeventsthatRediswillnotifyamongaset
#ofclasses.Everyclassisidentifiedbyasinglecharacter:
#
#KKeyspaceevents,publishedwith__keyspace@<db>__prefix.
#EKeyeventevents,publishedwith__keyevent@<db>__prefix.
#gGenericcommands(non-typespecific)likeDEL,EXPIRE,RENAME,...
#$Stringcommands
#lListcommands
#sSetcommands
#hHashcommands
#zSortedsetcommands
#xExpiredevents(eventsgeneratedeverytimeakeyexpires)
#eEvictedevents(eventsgeneratedwhenakeyisevictedformaxmemory)
#AAliasforg$lshzxe,sothatthe"AKE"stringmeansalltheevents.
#
#The"notify-keyspace-events"takesasargumentastringthatiscomposed
#byzeroormultiplecharacters.Theemptystringmeansthatnotifications
#aredisabledatall.
#
#Example:toenablelistandgenericevents,fromthepointofviewofthe
#eventname,use:
#
#notify-keyspace-eventsElg
#
#Example2:togetthestreamoftheexpiredkeyssubscribingtochannel
#name__keyevent@0__:expireduse:
#
#notify-keyspace-eventsEx
#
#Bydefaultallnotificationsaredisabledbecausemostusersdon'tneed
#thisfeatureandthefeaturehassomeoverhead.Notethatifyoudon't
#specifyatleastoneofKorE,noeventswillbedelivered.
notify-keyspace-events""
###############################ADVANCEDCONFIG###############################
#Hashesareencodedusingamemoryefficientdatastructurewhentheyhavea
#smallnumberofentries,andthebiggestentrydoesnotexceedagiven
#threshold.Thesethresholdscanbeconfiguredusingthefollowingdirectives.
hash-max-ziplist-entries512
hash-max-ziplist-value64
#Similarlytohashes,smalllistsarealsoencodedinaspecialwayinorder
#tosavealotofspace.Thespecialrepresentationisonlyusedwhen
#youareunderthefollowinglimits:
list-max-ziplist-entries512
list-max-ziplist-value64
#Setshaveaspecialencodinginjustonecase:whenasetiscomposed
#ofjuststringsthathappenstobeintegersinradix10intherange
#of64bitsignedintegers.
#Thefollowingconfigurationsettingsetsthelimitinthesizeofthe
#setinordertousethisspecialmemorysavingencoding.
set-max-intset-entries512
#Similarlytohashesandlists,sortedsetsarealsospeciallyencodedin
#ordertosavealotofspace.Thisencodingisonlyusedwhenthelengthand
#elementsofasortedsetarebelowthefollowinglimits:
zset-max-ziplist-entries128
zset-max-ziplist-value64
#HyperLogLogsparserepresentationbyteslimit.Thelimitincludesthe
#16bytesheader.WhenanHyperLogLogusingthesparserepresentationcrosses
#thislimit,itisconvertedintothedenserepresentation.
#
#Avaluegreaterthan16000istotallyuseless,sinceatthatpointthe
#denserepresentationismorememoryefficient.
#
#Thesuggestedvalueis~3000inordertohavethebenefitsof
#thespaceefficientencodingwithoutslowingdowntoomuchPFADD,
#whichisO(N)withthesparseencoding.Thevaluecanberaisedto
#~10000whenCPUisnotaconcern,butspaceis,andthedatasetis
#composedofmanyHyperLogLogswithcardinalityinthe0-15000range.
hll-sparse-max-bytes3000
#Activerehashinguses1millisecondevery100millisecondsofCPUtimein
#ordertohelprehashingthemainRedishashtable(theonemappingtop-level
#keystovalues).ThehashtableimplementationRedisuses(seedict.c)
#performsalazyrehashing:themoreoperationyourunintoahashtable
#thatisrehashing,themorerehashing"steps"areperformed,soifthe
#serverisidletherehashingisnevercompleteandsomemorememoryisused
#bythehashtable.
#
#Thedefaultistousethismillisecond10timeseverysecondinorderto
#activerehashingthemaindictionaries,freeingmemorywhenpossible.
#
#Ifunsure:
#use"activerehashingno"ifyouhavehardlatencyrequirementsanditis
#notagoodthinginyourenvironmentthatRediscanreplyformtimetotime
#toquerieswith2millisecondsdelay.
#
#use"activerehashingyes"ifyoudon'thavesuchhardrequirementsbut
#wanttofreememoryasapwhenpossible.
activerehashingyes
#Theclientoutputbufferlimitscanbeusedtoforcedisconnectionofclients
#thatarenotreadingdatafromtheserverfastenoughforsomereason(a
#commonreasonisthataPub/Subclientcan'tconsumemessagesasfastasthe
#publishercanproducethem).
#
#Thelimitcanbesetdifferentlyforthethreedifferentclassesofclients:
#
#normal->normalclients
#slave->slaveclientsandMONITORclients
#pubsub->clientssubscribedtoatleastonepubsubchannelorpattern
#
#Thesyntaxofeveryclient-output-buffer-limitdirectiveisthefollowing:
#
#client-output-buffer-limit<class><hardlimit><softlimit><softseconds>
#
#Aclientisimmediatelydisconnectedoncethehardlimitisreached,orif
#thesoftlimitisreachedandremainsreachedforthespecifiednumberof
#seconds(continuously).
#Soforinstanceifthehardlimitis32megabytesandthesoftlimitis
#16megabytes/10seconds,theclientwillgetdisconnectedimmediately
#ifthesizeoftheoutputbuffersreach32megabytes,butwillalsoget
#disconnectediftheclientreaches16megabytesandcontinuouslyovercomes
#thelimitfor10seconds.
#
#Bydefaultnormalclientsarenotlimitedbecausetheydon'treceivedata
#withoutasking(inapushway),butjustafterarequest,soonly
#asynchronousclientsmaycreateascenariowheredataisrequestedfaster
#thanitcanread.
#
#Insteadthereisadefaultlimitforpubsubandslaveclients,since
#subscribersandslavesreceivedatainapushfashion.
#
#Boththehardorthesoftlimitcanbedisabledbysettingthemtozero.
client-output-buffer-limitnormal000
client-output-buffer-limitslave256mb64mb60
client-output-buffer-limitpubsub32mb8mb60
#Rediscallsaninternalfunctiontoperformmanybackgroundtasks,like
#closingconnectionsofclientsintimeout,purgingexpiredkeysthatare
#neverrequested,andsoforth.
#
#Notalltasksareperformedwiththesamefrequency,butRedischecksfor
#taskstoperformaccordinglytothespecified"hz"value.
#
#Bydefault"hz"issetto10.RaisingthevaluewillusemoreCPUwhen
#Redisisidle,butatthesametimewillmakeRedismoreresponsivewhen
#therearemanykeysexpiringatthesametime,andtimeoutsmaybe
#handledwithmoreprecision.
#
#Therangeisbetween1and500,howeveravalueover100isusuallynot
#agoodidea.Mostusersshouldusethedefaultof10andraisethisupto
#100onlyinenvironmentswhereverylowlatencyisrequired.
hz10
#WhenachildrewritestheAOFfile,ifthefollowingoptionisenabled
#thefilewillbefsync-edevery32MBofdatagenerated.Thisisuseful
#inordertocommitthefiletothediskmoreincrementallyandavoid
#biglatencyspikes.
aof-rewrite-incremental-fsyncyes
上述配置引用自:http://my.oschina.net/wfire/blog/301147
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以前为redis5.0.5的运行参考配置
1.redis-default.conf作为基础配置,供其他配置文件引用
#redis-default.conf
#作为基础配置,供其他配置文件引用
#把配置文件注释去掉,去除了RDB备份的Redis配置
bind127.0.0.1
protected-modeyes
port6379
tcp-backlog511
timeout0
tcp-keepalive300
daemonizeno
supervisedno
pidfile/var/run/redis_6379.pid
loglevelnotice
logfile""
databases16
always-show-logoyes
save""
stop-writes-on-bgsave-erroryes
rdbcompressionyes
rdbchecksumyes
dbfilenamedump.rdb
dir./
replica-serve-stale-datayes
replica-read-onlyyes
repl-diskless-syncno
repl-diskless-sync-delay5
repl-disable-tcp-nodelayno
replica-priority100
lazyfree-lazy-evictionno
lazyfree-lazy-expireno
lazyfree-lazy-server-delno
replica-lazy-flushno
appendonlyno
appendfilename"appendonly.aof"
appendfsynceverysec
no-appendfsync-on-rewriteno
auto-aof-rewrite-percentage100
auto-aof-rewrite-min-size64mb
aof-load-truncatedyes
aof-use-rdb-preambleyes
lua-time-limit5000
slowlog-log-slower-than10000
slowlog-max-len128
latency-monitor-threshold0
notify-keyspace-events""
hash-max-ziplist-entries512
hash-max-ziplist-value64
list-max-ziplist-size-2
list-compress-depth0
set-max-intset-entries512
zset-max-ziplist-entries128
zset-max-ziplist-value64
hll-sparse-max-bytes3000
stream-node-max-bytes4096
stream-node-max-entries100
activerehashingyes
client-output-buffer-limitnormal000
client-output-buffer-limitreplica256mb64mb60
client-output-buffer-limitpubsub32mb8mb60
dynamic-hzyes
aof-rewrite-incremental-fsyncyes
rdb-save-incremental-fsyncyes
2.单机版配置redis-single.conf
#导入基础配置
include../redis-default.conf
#根目录,建议配置成绝对路径,这样下面的file都可以配置成相对路径
dir/home/redishome/redis_6379
#守护方式启动
daemonizeyes
#守护方式PID存放路径
pidfilerun/redis_6379.pid
#启动端口
port6379
#tcp队列长度(不能超过somaxconn和tcp_max_syn_backlog的值)
tcp-backlog4096
#绑定的客户端地址
bind0.0.0.0
#客户端闲置关闭时间,0代表不关闭
timeout300
#检测时间,空闲则关闭
tcp-keepalive60
#日志级别debug/verbose:适用于开发和调试notice:适用于生产模式warning:只打印警告
loglevelnotice
#日志文件stdout是标准输出(输出屏幕或者发送给dev/null)
#logfile"log/redis_6379.log"
logfilestdout
#数据库访问密码
requirepassAmhEytQUZjqnRSvo7uWkJaM7Vp2jn3rR
#最大连接数0代表不限制
maxclients0
#最大内存限制maxmemorybytes
#maxmemory16777216
#开启RDB每60分钟备份一次
save36001
#开启AOF
appendonlyyes
#AOF文件位置
appendfilename"appendonly.aof"
#每秒备份
appendfsynceverysec
#开启混合备份模式
aof-use-rdb-preambleyes
#混合模式RDB备份时机,默认是文件到达64M即进行重写
auto-aof-rewrite-percentage100
auto-aof-rewrite-min-size128mb
#禁用危险命令
rename-commandFLUSHALL"nkGqnnmrnES22sA0KI9KVP18TToAhbwP"
rename-commandFLUSHDB"3h0Y2uVnENarfbF8tHtVrP4Q1PUXZnU8"
rename-commandKEYS"Rq1iyHHsPfUam9w9XkBQ5mhRERI01YIs"
rename-commandCONFIG"9jgj3ETHylbxczuJT6Kp6GSHuNdJB1xd"
3.集群配置在单机版的配置下,增加集群配置
#启用集群模式
cluster-enabledyes
#集群启动后存放节点的文件
cluster-config-filenodes_6379.conf
#节点连接超时时间
cluster-node-timeout5000
#集群访问密码,一般和数据库访问密码一致
masterauthAmhEytQUZjqnRSvo7uWkJaM7Vp2jn3rR
include../redis-default.conf#根目录,建议配置成绝对路径,这样下面的file都可以配置成相对路径dir/home/redishome/redis_6379#守护方式启动daemonizeyes#守护方式PID存放路径pidfilerun/redis_6379.pid#启动端口port6379#tcp队列长度(不能超过somaxconn和tcp_max_syn_backlog的值)tcp-backlog4096#绑定的客户端地址bind0.0.0.0#客户端闲置关闭时间,0代表不关闭timeout300#检测时间,空闲则关闭tcp-keepalive60#日志级别debug/verbose:适用于开发和调试notice:适用于生产模式warning:只打印警告loglevelnotice#日志文件stdout是标准输出(输出屏幕或者发送给dev/null)#logfile"log/redis_6379.log"logfilestdout#数据库访问密码requirepassAmhEytQUZjqnRSvo7uWkJaM7Vp2jn3rR#最大连接数0代表不限制maxclients0#最大内存限制maxmemorybytes#maxmemory16777216#开启RDB每60分钟备份一次save36001#开启AOFappendonlyyes#AOF文件位置appendfilename"appendonly.aof"#每秒备份appendfsynceverysec#开启混合备份模式aof-use-rdb-preambleyes#混合模式RDB备份时机,默认是文件到达64M即进行重写auto-aof-rewrite-percentage100auto-aof-rewrite-min-size128mb
#禁用危险命令rename-commandFLUSHALL"nkGqnnmrnES22sA0KI9KVP18TToAhbwP"rename-commandFLUSHDB"3h0Y2uVnENarfbF8tHtVrP4Q1PUXZnU8"rename-commandKEYS"Rq1iyHHsPfUam9w9XkBQ5mhRERI01YIs"rename-commandCONFIG"9jgj3ETHylbxczuJT6Kp6GSHuNdJB1xd"
本文内容总结：
原文链接：https://www.cnblogs.com/kreo/p/4423362.html