Getting Started with Redis

GETTING STARTED WITH
REDIS
INTRODUCTION TO REDIS
CreatedbyDanielKu

REDIS
is an open source, BSD licensed,
advanced key-valuestore.
Redis

FEATURES
DataTypes
Publish/Subscribe
Replication *
Persistence *
(Various)

INSTALLATION ON MAC
$brewinstallredis
Thanks, .brew

START SERVER
$redis-server/usr/local/etc/redis.conf

START SERVER AT LOGIN ON MAC
$ln-sfv/usr/local/opt/redis/*.plist~/Library/LaunchAgents
$launchctlload~/Library/LaunchAgents/homebrew.mxcl.redis.plist

START SHELL CLIENT
$redis-cli
127.0.0.1:6379>

CONNECTION COMMANDS
PING
ECHOmessage
QUIT
127.0.0.1:6379>ping
PONG
127.0.0.1:6379>echohello
"hello"
127.0.0.1:6379>quit

DATABASE COMMANDS
SELECTindex
127.0.0.1:6379>select1
OK
127.0.0.1:6379[1]>select15
OK
127.0.0.1:6379[15]>select16//error
(error)ERRinvalidDBindex
127.0.0.1:6379[16]>select0
OK

DATABASES
Bydefault, there are 16 databases.
Bydefault, selects database 0.

SETkeyvalue
GETkey
127.0.0.1:6379>setname"Daniel"
OK
127.0.0.1:6379>getname
"Daniel"

APPENDkeyvalue
STRLENkey
127.0.0.1:6379>getname
"Daniel"
127.0.0.1:6379>appendname"Ku"
(integer)9
127.0.0.1:6379>getname
"DanielKu"
127.0.0.1:6379>strlenname
(integer)9

GETRANGEkeystartend
SETRANGEkeyoffsetvalue
127.0.0.1:6379>getname
"DanielKu"
127.0.0.1:6379>getrangename47
"elK"
127.0.0.1:6379>setrangename7Kim
(integer)10
127.0.0.1:6379>getname
"DanielKim"

GETSETkeyvalue
127.0.0.1:6379>getname
"DanielKim"
127.0.0.1:6379>getsetname"JennyLee"
"DanielKim"
127.0.0.1:6379>getname
"JennyLee"

MSETkeyvalue[keyvalue...]
MGETkey[key...]
127.0.0.1:6379>msetname1"DanielKu"name2"JennyLee"
OK
127.0.0.1:6379>mgetname1name2
1)"DanielKu"
2)"JennyLee"
M-= Multiple

INCRkey
DECRkey
127.0.0.1:6379>setage30
OK
127.0.0.1:6379>getage
"30"
127.0.0.1:6379>incrage
(integer)31
127.0.0.1:6379>getage
"31"
127.0.0.1:6379>decrage
(integer)30
127.0.0.1:6379>getage
"30"

INCRBYkeyincrement
DECRBYkeydecrement
127.0.0.1:6379>getage
"30"
127.0.0.1:6379>incrbyage10
(integer)40
127.0.0.1:6379>incrbyage10
(integer)50
127.0.0.1:6379>decrbyage10
(integer)40
127.0.0.1:6379>getage
"40"

INCRBYFLOATkeyincrement
127.0.0.1:6379>getage
"40"
127.0.0.1:6379>incrbyage1.5
(error)ERRvalueisnotanintegeroroutofrange
127.0.0.1:6379>incrbyfloatage1.5
"41.5"
127.0.0.1:6379>getage
"41.5"
127.0.0.1:6379>incrage
(error)ERRvalueisnotanintegeroroutofrange

SETEXkeysecondsvalue
PSETEXkeymillisvalue
127.0.0.1:6379>getname
"JennyLee"
127.0.0.1:6379>setexname5"DanielKu"
OK
127.0.0.1:6379>getname
"DanielKu"
127.0.0.1:6379>getname//after5seconds
(nil)
127.0.0.1:6379>psetexname5000"DanielKu"
OK
127.0.0.1:6379>getname
"DanielKu"
127.0.0.1:6379>getname//after5000milliseconds
(nil)
-EX = EXpire

SETNXkeyvalue
127.0.0.1:6379>getname
(nil)
127.0.0.1:6379>setnxname"DanielKu"
(integer)1
127.0.0.1:6379>getname
"DanielKu"
127.0.0.1:6379>setnxname"JennyLee"
(integer)0
127.0.0.1:6379>getname
"DanielKu"
-NX = NoteXist

MSETNXkeyvalue[keyvalue...]
127.0.0.1:6379>msetnxx1y2
(integer)1
127.0.0.1:6379>mgetxy
1)"1"
2)"2"
127.0.0.1:6379>msetnxx3z4
(integer)0
127.0.0.1:6379>mgetxyz
1)"1"
2)"2"
3)(nil)

LPUSHkeyvalue[value...]
LRANGEkeystartstop
127.0.0.1:6379>lpushlistabc
(integer)3
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"
3)"a"
127.0.0.1:6379>lpushlistd
(integer)4
127.0.0.1:6379>lrangelist0-1
1)"d"
2)"c"
3)"b"
4)"a"
127.0.0.1:6379>lrangelist23
1)"b"
2)"a"
L-= List&Left

RPUSHkeyvalue[value...]
127.0.0.1:6379>lrangelist0-1
1)"d"
2)"c"
3)"b"
4)"a"
127.0.0.1:6379>rpushlistz
(integer)5
127.0.0.1:6379>lrangelist0-1
1)"d"
2)"c"
3)"b"
4)"a"
5)"z"
R-= Right

LPOPkey
RPOPkey
LLENkey
127.0.0.1:6379>lpoplist
"d"
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"
3)"a"
4)"z"
127.0.0.1:6379>rpoplist
"z"
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"
3)"a"
127.0.0.1:6379>llenlist
(integer)3

LREMkeycountvalue
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"
3)"a"
127.0.0.1:6379>lremlist1a
(integer)1
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"
127.0.0.1:6379>lremlist1a
(integer)0
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"b"

127.0.0.1:6379>lpushlistcbab
(integer)6
127.0.0.1:6379>lrangelist0-1
1)"b"
2)"a"
3)"b"
4)"c"
5)"c"
6)"b"
127.0.0.1:6379>lremlist2b
(integer)2
127.0.0.1:6379>lrangelist0-1
1)"a"
2)"c"
3)"c"
4)"b"

127.0.0.1:6379>lpushlistc
(integer)5
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"a"
3)"c"
4)"c"
5)"b"
127.0.0.1:6379>lremlist-2c
(integer)2
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"a"
3)"b"

LINSERTkeyBEFORE|AFTERpivotvalue
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"a"
3)"b"
127.0.0.1:6379>linsertlistbeforeax
(integer)4
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"x"
3)"a"
4)"b"

127.0.0.1:6379>linsertlistafteray
(integer)5
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"x"
3)"a"
4)"y"
5)"b"

LINDEXkeyindex
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"x"
3)"a"
4)"y"
5)"b"
127.0.0.1:6379>lindexlist0
"c"
127.0.0.1:6379>lindexlist-1
"b"
127.0.0.1:6379>lindexlist3
"y"

LSETkeyindexvalue
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"x"
3)"a"
4)"y"
5)"b"
127.0.0.1:6379>lsetlist1X
OK
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"X"
3)"a"
4)"y"
5)"b"

LTRIMkeystartstop
127.0.0.1:6379>lrangelist0-1
1)"c"
2)"X"
3)"a"
4)"y"
5)"b"
127.0.0.1:6379>ltrimlist23
OK
127.0.0.1:6379>lrangelist0-1
1)"a"
2)"y"

RPOPLPUSHsourcedestination
127.0.0.1:6379>lrangelist0-1
1)"a"
2)"y"
127.0.0.1:6379>rpoplpushlistlist2
"y"
127.0.0.1:6379>lrangelist0-1
1)"a"
127.0.0.1:6379>lrangelist20-1
1)"y"
127.0.0.1:6379>rpoplpushlistlist2
"a"
127.0.0.1:6379>lrangelist0-1
(emptylistorset)
127.0.0.1:6379>lrangelist20-1
1)"a"
2)"y"

LPUSHXkeyvalue
RPUSHXkeyvalue
127.0.0.1:6379>lrangelist0-1
(emptylistorset)
127.0.0.1:6379>lrangelist20-1
1)"a"
2)"y"
127.0.0.1:6379>lpushxlista
(integer)0
127.0.0.1:6379>lrangelist0-1
(emptylistorset)
127.0.0.1:6379>lpushxlist2b
(integer)3
127.0.0.1:6379>lrangelist20-1
1)"b"
2)"a"
3)"y"
-X = eXist

BLPOPkey[key...]timeout
BRPOPkey[key...]timeout
Client#1
127.0.0.1:6379>lrangenames0-1
(emptylistorset)
127.0.0.1:6379>lpushnamesdaniel
(integer)1
127.0.0.1:6379>lrangenames0-1
1)"daniel"
Client#2
127.0.0.1:6379>blpopnames1
1)"names"
2)"daniel"
Client#1
127.0.0.1:6379>lrangenames0-1
(emptylistorset)
B-= Blocking

Client#1
127.0.0.1:6379>blpopnames5//waitfor5seconds
(nil)
(5.24s)
127.0.0.1:6379>blpopnames5
Client#2
(integer)1
Client#1
1)"names"
2)"daniel"
(2.47s)

Client#1
127.0.0.1:6379>blpopnamesnames25
Client#2
127.0.0.1:6379>lpushnames2daniel
(integer)1
Client#1
1)"names2"
2)"daniel"
(3.18s)

BRPOPLPUSHsourcedestinationtimeout
Client#1
127.0.0.1:6379>lrangenames0-1
(emptylistorset)
127.0.0.1:6379>lrangenames20-1
(emptylistorset)
127.0.0.1:6379>brpoplpushnamesnames25
Client#2
(integer)1
Client#1
"daniel"
(2.03s)
127.0.0.1:6379>lrangenames0-1
(emptylistorset)
127.0.0.1:6379>lrangenames20-1
1)"daniel"

HSETkeyfieldvalue
HGETkeyfield
HGETALLkey
127.0.0.1:6379>hsetobjectnamedaniel
(integer)1
127.0.0.1:6379>hsetobjectage34
(integer)1
127.0.0.1:6379>hgetobjectname
"daniel"
127.0.0.1:6379>hgetobjectage
"34"
127.0.0.1:6379>hgetallobject
1)"name"
2)"daniel"
3)"age"
4)"34"
H-= Hash

HKEYSkey
HVALSkey
HEXISTSkeyfield
HLENkey
127.0.0.1:6379>hkeysobject
1)"name"
2)"age"
127.0.0.1:6379>hvalsobject
1)"daniel"
2)"34"
127.0.0.1:6379>hexistsobjectname
(integer)1
127.0.0.1:6379>hexistsobjectjob
(integer)0
127.0.0.1:6379>hlenobject
(integer)2

HINCRBYkeyfieldincrement
HINCRBYFLOATkeyfieldincrement
127.0.0.1:6379>hincrbyobjectage1
(integer)35
127.0.0.1:6379>hincrbyobjectage-2
(integer)33
127.0.0.1:6379>hgetallobject
1)"name"
2)"daniel"
3)"age"
4)"33"

HMSETkeyfieldvalue[fieldvalue...]
HMGETkeyfield[field...]
127.0.0.1:6379>hmsetobject2f1xf2y
OK
127.0.0.1:6379>hmgetobject2f1f2
1)"x"
2)"y"
127.0.0.1:6379>hgetallobject2
1)"f1"
2)"x"
3)"f2"
4)"y"

HSETNXkeyfieldvalue
127.0.0.1:6379>hsetnxobject2f3z
(integer)1
127.0.0.1:6379>hsetnxobject2f3Z
(integer)0
1)"f1"
2)"x"
3)"f2"
4)"y"
5)"f3"
6)"z"

HDELkeyfield[field...]
127.0.0.1:6379>hdelobject2f3
(integer)1
127.0.0.1:6379>hdelobject2f2
(integer)1
1)"f1"
2)"x"

SADDkeymember[member...]
SMEMBERSkey
127.0.0.1:6379>saddsetone
(integer)1
127.0.0.1:6379>saddsettwothree
(integer)2
127.0.0.1:6379>smembersset
1)"one"
2)"three"
3)"two"
S-= Set

SREMkeymember[member...]
SISMEMBERkeymember
SCARDkey
127.0.0.1:6379>sremsetthree
(integer)1
1)"one"
2)"two"
127.0.0.1:6379>sismembersetone
(integer)1
127.0.0.1:6379>sismembersetthree
(integer)0
127.0.0.1:6379>scardset
(integer)2

SRANDMEMBERkey
127.0.0.1:6379>saddsetthree
(integer)1
1)"one"
2)"three"
3)"two"
127.0.0.1:6379>srandmemberset
"two"
"one"
"two"
"two"
"three"

SPOPkey
127.0.0.1:6379>spopset
"one"
127.0.0.1:6379>spopset
"three"
1)"two"
127.0.0.1:6379>spopset
"two"
(emptylistorset)

SDIFFkey[key...]
SDIFFSTOREdestinationkey[key...]
127.0.0.1:6379>saddset1onetwothree
(integer)3
127.0.0.1:6379>saddset2onetwofourfive
(integer)4
127.0.0.1:6379>sdiffset1set2
1)"three"
127.0.0.1:6379>sdiffset2set1
1)"four"
2)"five"
127.0.0.1:6379>sdiffstoreset3set1set2
(integer)1
127.0.0.1:6379>smembersset3
1)"three"

SINTERkey[key...]
SINTERSTOREdestinationkey[key...]
SUNIONkey[key...]
SUNIONSTOREdestinationkey[key...]
127.0.0.1:6379>sinterset1set2
1)"one"
2)"two"
127.0.0.1:6379>sunionset1set2
1)"two"
2)"one"
3)"four"
4)"five"
5)"three"

SMOVEsourcedestinationmember
127.0.0.1:6379>smoveset1set2three
(integer)1
1)"one"
2)"two"
1)"four"
2)"one"
3)"five"
4)"two"
5)"three"

ZADDkeyscoremember[scoremember...]
ZCARDkey
127.0.0.1:6379>zaddzset10one
(integer)1
127.0.0.1:6379>zaddzset20two30three
(integer)2
127.0.0.1:6379>zcardzset
(integer)3
Z-= Sorted Set

ZSCOREkeymember
ZCOUNTkeyminmax
127.0.0.1:6379>zscorezsetone
"10"
127.0.0.1:6379>zscorezsettwo
"20"
127.0.0.1:6379>zcountzset-inf+inf
(integer)3
127.0.0.1:6379>zcountzset1020
(integer)2
127.0.0.1:6379>zcountzset10(20
(integer)1
Z-= Sorted Set

ZRANKkeymember
ZREVRANKkeymember
127.0.0.1:6379>zrankzsetone
(integer)0
127.0.0.1:6379>zrankzsetthree
(integer)2
127.0.0.1:6379>zrevrankzsetone
(integer)2
127.0.0.1:6379>zrevrankzsetthree
(integer)0

ZRANGEkeystartstop[WITHSCORES]
ZREVRANGEkeystartstop[WITHSCORES]
127.0.0.1:6379>zrangezset0-1
1)"one"
2)"two"
3)"three"
127.0.0.1:6379>zrangezset0-1withscores
1)"one"
2)"10"
3)"two"
4)"20"
5)"three"
6)"30"
127.0.0.1:6379>zrevrangezset01withscores
1)"three"
2)"30"
3)"two"
4)"20"

ZRANGEBYSCOREkeyminmax[WITHSCORES][LIMIToffsetcount]
ZREVRANGEBYSCOREkeyminmax[WITHSCORES][LIMIToffsetcount]
127.0.0.1:6379>zrangebyscorezset2030
1)"two"
2)"three"
127.0.0.1:6379>zrangebyscorezset(2030withscores
1)"three"
2)"30"
127.0.0.1:6379>zrevrangebyscorezset30(10withscores
1)"three"
2)"30"
3)"two"
4)"20"
127.0.0.1:6379>zrevrangebyscorezset+inf-infwithscoreslimit21
1)"one"
2)"10"

ZINCRBYkeyincrementmember
ZREMkeymember[member...]
127.0.0.1:6379>zincrbyzset5two
"25"
127.0.0.1:6379>zscorezsettwo
"25"
127.0.0.1:6379>zremzsetthree
(integer)1
1)"one"
2)"10"
3)"two"
4)"25"

ZREMRANGEBYSCOREkeyminmax
ZREMRANGEBYRANKkeyminmax
127.0.0.1:6379>zremrangebyscorezset1020
(integer)1
1)"two"
2)"25"
127.0.0.1:6379>zremrangebyrankzset0-1
(integer)1
(emptylistorset)

KEYSpatten
127.0.0.1:6379>keys*
1)"set2"
2)"set3"
3)"object2"
4)"name1"
5)"x"
6)"object"
7)"age"
8)"list2"
9)"name2"
10)"name"
11)"y"
12)"set1"
13)"names2"
127.0.0.1:6379>keysname*
1)"name1"
2)"name2"
3)"name"
4)"names2"
127.0.0.1:6379>keysset*
1)"set2"
2)"set3"
3)"set1"

EXISTSkey
TYPEkey
127.0.0.1:6379>existsname
(integer)1
127.0.0.1:6379>existsset
(integer)0
127.0.0.1:6379>typename
string
127.0.0.1:6379>typeage
string
127.0.0.1:6379>typeset1
set
127.0.0.1:6379>typelist2
list

DELkey[key...]
127.0.0.1:6379>delxy
(integer)2
127.0.0.1:6379>keys*
1)"set2"
2)"set3"
3)"object2"
4)"list"
5)"name1"
6)"object"
7)"age"
8)"name2"
9)"name"
10)"set1"
11)"names2"

RENAMEkeynewkey
RENAMENXkeynewkey
127.0.0.1:6379>keyslist*
1)"list2"
127.0.0.1:6379>renamelist2list
OK
127.0.0.1:6379>keyslist*
1)"list"
127.0.0.1:6379>keysname*
1)"name1"
2)"names2"
3)"name2"
4)"name"
127.0.0.1:6379>renamenxname2name
(integer)0
127.0.0.1:6379>renamenxnames2names
(integer)1
127.0.0.1:6379>keysname*
1)"name1"
2)"names"
3)"name2"
4)"name"

MOVEkeydb
127.0.0.1:6379>keysname*
1)"name1"
2)"names"
3)"name2"
4)"name"
127.0.0.1:6379>movename1
(integer)1
127.0.0.1:6379>keysname*
1)"name1"
2)"names"
3)"name2"
127.0.0.1:6379>select1
OK
127.0.0.1:6379[1]>keysname*
1)"name"
127.0.0.1:6379[1]>select0
OK

RANDOMKEY
127.0.0.1:6379>randomkey
"set2"
127.0.0.1:6379>randomkey
"name1"
127.0.0.1:6379>randomkey
"list"
127.0.0.1:6379>randomkey
"name2"
127.0.0.1:6379>randomkey
"age"
127.0.0.1:6379>randomkey
"object2"
127.0.0.1:6379>randomkey
"set1"

EXPIREkeyseconds
PEXPIREkeymillis
EXPIREATkeytimestamp
PEXPIREATkeymillis-timestamp
127.0.0.1:6379>expirename15
(integer)1
127.0.0.1:6379>getname1
"DanielKu"
127.0.0.1:6379>getname1//after5seconds
(nil)
127.0.0.1:6379>pexpirename25000
(integer)1
127.0.0.1:6379>getname2
"JennyLee"
127.0.0.1:6379>getname2//after5000seconds
(nil)

TTLkey
PTTLkey
127.0.0.1:6379>setage34
OK
127.0.0.1:6379>ttlage
(integer)-1
127.0.0.1:6379>expireage5
(integer)1
127.0.0.1:6379>ttlage
(integer)4
127.0.0.1:6379>pttlage
(integer)1720
127.0.0.1:6379>ttlage
(integer)-2

PERSISTkey
127.0.0.1:6379>setnameDaniel
OK
127.0.0.1:6379>expirename5
(integer)1
127.0.0.1:6379>ttlname
(integer)3
127.0.0.1:6379>persistname
(integer)1
127.0.0.1:6379>ttlname
(integer)-1
127.0.0.1:6379>getname
"Daniel"

PUBLISHchannelmessage
SUBSCRIBEchannel[channel...]
Client#1
127.0.0.1:6379>subscribechannel1
Readingmessages...(pressCtrl-Ctoquit)
1)"subscribe"
2)"channel1"
3)(integer)1
Client#2
127.0.0.1:6379>publishchannel1"Hello"
(integer)1
Client#1
1)"message"
2)"channel1"
3)"Hello"

PSUBSCRIBEpattern[pattern...]
Client#1
127.0.0.1:6379>psubscribechannel*
Readingmessages...(pressCtrl-Ctoquit)
1)"psubscribe"
2)"channel*"
3)(integer)1
Client#2
127.0.0.1:6379>publishchannel1Hi
(integer)2
Client#1
1)"pmessage"
2)"channel*"
3)"channel1"
4)"Hi"

Client#2
127.0.0.1:6379>publishchannel2Hello
(integer)2
Client#1
1)"pmessage"
2)"channel*"
3)"channel2"
4)"Hello"

UNSUBSCRIBE[channel[channel...]]
PUNSUBSCRIBE[pattern[pattern...]]
NotApplicable in redis-cli

MULTI
EXEC
127.0.0.1:6379>multi
OK
QUEUED
127.0.0.1:6379>setage20
QUEUED
127.0.0.1:6379>exec
1)OK
2)OK
127.0.0.1:6379>mgetnameage
1)"Daniel"
2)"20"

127.0.0.1:6379>multi
OK
127.0.0.1:6379>incrname
QUEUED
127.0.0.1:6379>incrage
QUEUED
127.0.0.1:6379>exec
1)(error)ERRvalueisnotanintegeroroutofrange
2)(integer)21
127.0.0.1:6379>mgetnameage
1)"Daniel"
2)"21"

DISCARD
127.0.0.1:6379>multi
OK
QUEUED
127.0.0.1:6379>setage30
QUEUED
127.0.0.1:6379>discard
OK

NODE.JS DRIVER FOR REDIS
https://github.com/mranney/node_redis
$npminstallhiredisredis

SOCKET.IO
http://socket.io/
$npminstallsocket.io
$bowerinstallsocket.io-client

EXAMPLE
https://github.com/kjunine/redis-samples

REFERENCES
Tuts+ Premium: Redis Essential
대용량서버구축을위한Memcached와Redis
11 Common Web Use Cases Solved In Redis

Getting Started with Redis

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