Redis windows 测试redis持久化功能Word文件下载.docx

Redis windows 测试redis持久化功能Word文件下载.docx

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25.#notice（moderatelyverbose,whatyouwantinproductionprobably）

26.#warning（onlyveryimportant/criticalmessagesarelogged）

27.logleveldebug

28.

29.#Specifythelogfilename.Also'

stdout'

canbeusedtoforce

30.#thedemontologonthestandardoutput.Notethatifyouusestandard

31.#outputforloggingbutdaemonize,logswillbesentto/dev/null

32.logfilestdout

33.

34.#Setthenumberofdatabases.ThedefaultdatabaseisDB0,youcanselect

35.#adifferentoneonaper-connectionbasisusingSELECT<

dbid>

where

36.#dbidisanumberbetween0and'

databases'

-1

37.databases16

38.

39.################################SNAPSHOTTING#################################

40.#

41.#SavetheDBondisk:

42.#

43.#save<

seconds>

<

changes>

44.#

45.#WillsavetheDBifboththegivennumberofsecondsandthegiven

46.#numberofwriteoperationsagainsttheDBoccurred.

47.#

48.#Intheexamplebelowthebehaviourwillbetosave:

49.#after900sec（15min）ifatleast1keychanged

50.#after300sec（5min）ifatleast10keyschanged

51.#after60secifatleast10000keyschanged

52.save9001

53.save30010

54.save6010000

55.

56.#CompressstringobjectsusingLZFwhendump.rdbdatabases?

57.#Fordefaultthat'

ssetto'

asit'

salmostalwaysawin.

58.#IfyouwanttosavesomeCPUinthesavingchildsetitto'

no'

but

59.#thedatasetwilllikelybebiggerifyouhavecompressiblevaluesorkeys.

60.rdbcompressionyes

61.

62.#ThefilenamewheretodumptheDB

63.dbfilenamedump.rdb

64.

65.#Fordefaultsave/loadDBin/fromtheworkingdirectory

66.#Notethatyoumustspecifyadirectorynotafilename.

67.dir./

68.

69.#################################REPLICATION#################################

70.

71.#Master-Slavereplication.UseslaveoftomakeaRedisinstanceacopyof

72.#anotherRedisserver.Notethattheconfigurationislocaltotheslave

73.#soforexampleitispossibletoconfiguretheslavetosavetheDBwitha

74.#differentinterval,ortolistentoanotherport,andsoon.

75.#

76.#slaveof<

masterip>

masterport>

77.

78.#Ifthemasterispasswordprotected（usingthe"

requirepass"

configuration

79.#directivebelow）itispossibletotelltheslavetoauthenticatebefore

80.#startingthereplicationsynchronizationprocess,otherwisethemasterwill

81.#refusetheslaverequest.

82.#

83.#masterauth<

master-password>

84.

85.##################################SECURITY###################################

86.

87.#RequireclientstoissueAUTH<

PASSWORD>

beforeprocessinganyother

88.#commands.Thismightbeusefulinenvironmentsinwhichyoudonottrust

89.#otherswithaccesstothehostrunningredis-server.

90.#

91.#Thisshouldstaycommentedoutforbackwardcompatibilityandbecausemost

92.#peopledonotneedauth（e.g.theyruntheirownservers）.

93.#

94.#requirepassfoobared

95.

96.###################################LIMITS####################################

97.

98.#Setthemaxnumberofconnectedclientsatthesametime.Bydefaultthere

99.#isnolimit,andit'

suptothenumberoffiledescriptorstheRedisprocess

100.#isabletoopen.Thespecialvalue'

0'

meansnolimts.

101.#OncethelimitisreachedRediswillcloseallthenewconnectionssending

102.#anerror'

maxnumberofclientsreached'

.

103.#

104.#maxclients128

105.

106.#Don'

tusemorememorythanthespecifiedamountofbytes.

107.#WhenthememorylimitisreachedRediswilltrytoremovekeyswithan

108.#EXPIREset.Itwilltrytostartfreeingkeysthataregoingtoexpire

109.#inlittletimeandpreservekeyswithalongertimetolive.

110.#Rediswillalsotrytoremoveobjectsfromfreelistsifpossible.

111.#

112.#Ifallthisfails,Rediswillstarttoreplywitherrorstocommands

113.#thatwillusemorememory,likeSET,LPUSH,andsoon,andwillcontinue

114.#toreplytomostread-onlycommandslikeGET.

115.#

116.#WARNING:

maxmemorycanbeagoodideamainlyifyouwanttouseRedisasa

117.#'

state'

serverorcache,notasarealDB.WhenRedisisusedasareal

118.#databasethememoryusagewillgrowovertheweeks,itwillbeobviousif

119.#itisgoingtousetoomuchmemoryinthelongrun,andyou'

llhavethetime

120.#toupgrade.Withmaxmemoryafterthelimitisreachedyou'

llstarttoget

121.#errorsforwriteoperations,andthismayevenleadtoDBinconsistency.

122.#

123.#maxmemory<

bytes>

124.

125.##############################APPENDONLYMODE###############################

126.

127.#BydefaultRedisasynchronouslydumpsthedatasetondisk.Ifyoucanlive

128.#withtheideathatthelatestrecordswillbelostifsomethinglikeacrash

129.#happensthisisthepreferredwaytorunRedis.Ifinsteadyoucarealot

130.#aboutyourdataanddon'

twanttothatasinglerecordcangetlostyoushould

131.#enabletheappendonlymode:

whenthismodeisenabledRediswillappend

132.#everywriteoperationreceivedinthefileappendonly.log.Thisfilewill

133.#bereadonstartupinordertorebuildthefulldatasetinmemory.

134.#

135.#Notethatyoucanhaveboththeasyncdumpsandtheappendonlyfileifyou

136.#like（youhavetocommentthe"

save"

statementsabovetodisablethedumps）.

137.#StillifappendonlymodeisenabledRediswillloadthedatafromthe

138.#logfileatstartupignoringthedump.rdbfile.

139.#

140.#Thenameoftheappendonlyfileis"

appendonly.log"

141.#

142.#IMPORTANT:

ChecktheBGREWRITEAOFtocheckhowtorewritetheappend

143.#logfileinbackgroundwhenitgetstoobig.

144.

145.appendonlyyes

146.

147.#Thefsync（）calltellstheOperatingSystemtoactuallywritedataondisk

148.#insteadtowaitformoredataintheoutputbuffer.SomeOSwillreallyflush

149.#dataondisk,someotherOSwilljusttrytodoitASAP.

150.#

151.#Redissupportsthreedifferentmodes:

152.#

153.#no:

don'

tfsync,justlettheOSflushthedatawhenitwants.Faster.

154.#always:

fsyncaftereverywritetotheappendonlylog.Slow,Safest.

155.#everysec:

fsynconlyifonesecondpassedsincethelastfsync.Compromise.

156.#

157.#Thedefaultis"

always"

that'

sthesaferoftheoptions.It'

suptoyouto

158.#understandifyoucanrelaxthisto"

everysec"

thatwillfsynceverysecond

159.#orto"

no"

thatwilllettheoperatingsystemflushtheoutputbufferwhen

160.#itwant,forbetterperformances（butifyoucanlivewiththeideaof

161.#somedatalossconsiderthedefaultpersistencemodethat'

ssnapshotting）.

162.

163.appendfsyncalways

164.#appendfsynceverysec

165.#appendfsyncno

166.

167.###############################ADVANCEDCONFIG###############################

168.

169.#Gluesmalloutputbufferstogetherinordertosendsmallrepliesina

170.#singleTCPpacket.UsesabitmoreCPUbutmostofthetimesitisawin

171.#intermsofnumberofqueriespersecond.Use'

ifunsure.

172.glueoutputbufyes

173.

174.#Useobjectsharing.Cansavealotofmemoryifyouhavemanycommon

175.#stringinyourdataset,butperformslookupsagainstthesharedobjects

176.#poolsoitusesmoreCPUandcanbeabitslower.Usuallyit'

sagood

177.#idea.

178.#

179.#Whenobjectsharingisenabled（shareobjectsyes）youcanuse

180.#shareobjectspoolsizetocontrolthesizeofthepoolusedinordertotry

181.#objectsharing.Abiggerpoolsizewillleadtobettersharingcapabilities.

182.#Ingeneralyouwantthisvaluetobeatleastthedoubleofthenumberof

183.#verycommonstringsyouhaveinyourdataset.

184.#

185.#WARNING:

objectsharingisexperimental,don'

tenablethisfeature

186.#inproductionbeforeofRedis1.0-stable.Stillpleasetrythisfeaturein

187.#yourdevelopmentenvironmentsothatwecantestitbetter.

188.#shareobjectsno

189.#shareobjectspoolsize1024

启动redis

打开运行窗口

F:

\>

cdredis-2.0.2

\redis-2.0.2>

redis-server.exeredis.conf

[2944]15Jun22:

44:

29*Serverstarted,Redisversion2.0.2

29*DBloadedfromappendonlyfile:

0seconds

29*Theserverisnowreadytoacceptconnectionsonport

379

30-DB0:

1keys（0volatile）in4slotsHT.

30-0clientsconnected（0slaves）,450888bytesinuse

在打开一个窗口运行客户端

redis-cli.exe

redis>

设置值：

setajunajun

Reconnecting...OK

OK

取值：

getajun

"

ajun"

停止redis服务

shutdown

如果需要redis持久化数据需要配置redis日志开启

在每次更新操作后进行日志记录，如果不开启，可能会在断电时导致一段时间内的数据丢失。

因为redis本身同步数据文件是按上面save条件来同步的，所以有的数据会在一段时间内只存在于内存中。

默认值为no

此时要在redis.conf中修改或者添加

appendonlyyes

更新日志文件名，默认值为appendonly.aof

#更新日志条件，共有3个可选值。

no表示等操作系统进行数据缓存同步到磁盘，always表示每次更新操作后手动调用fsync（）将数据写到磁盘，everysec表示每秒同步一次（默认值）。

#appendfsyncalways

appendfsynceverysec