Video: MongoDB pawg ua haujlwm li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A mongodb pawg lo lus feem ntau yog siv rau sharded pawg hauv mongodb . Lub hom phiaj tseem ceeb ntawm sharded mongodb yog : Scale nyeem thiab sau nrog ntau lub pob. Txhua node ua tsis lis tag nrho cov ntaub ntawv yog li koj ua tau cais cov ntaub ntawv raws tag nrho cov nodes ntawm shard.
Raws li txoj cai, MongoDB Sharding ua haujlwm li cas?
Sharding yog ib txoj hauv kev los faib cov ntaub ntawv hla ntau lub tshuab. MongoDB siv kev sib faib los txhawb kev xa tawm nrog cov ntaub ntawv loj heev thiab kev ua haujlwm dhau los. Kab rov tav Scaling suav nrog faib cov txheej txheem cov ntaub ntawv thiab thauj khoom hla ntau lub servers, ntxiv cov servers ntxiv kom muaj peev xwm raws li qhov xav tau.
Tsis tas li ntawd, Sharded pawg yog dab tsi? Ib MongoDB sharded pawg muaj cov nram qab no Cheebtsam: shard: Txhua shard muaj ib tug subset ntawm cov sharded cov ntaub ntawv. Raws li MongoDB 3.6, shards yuav tsum tau muab xa mus ua ib qho kev sib hloov. mongos: Lub mongos ua raws li cov lus nug router, muab kev sib txuas ntawm cov neeg siv khoom thiab cov sharded pawg.
Dhau li ntawd, MongoDB replica teeb ua haujlwm li cas?
MongoDB ua tiav rov ua dua los ntawm kev siv replica teev . A replica teev yog ib pawg ntawm mongod piv txwv uas host tib cov ntaub ntawv teeb . Hauv ib luam tawm , ib lub node yog thawj node uas tau txais tag nrho cov kev sau ntawv. Tag nrho lwm qhov piv txwv, xws li cov tsev kawm theem nrab, siv cov haujlwm los ntawm cov thawj coj kom lawv muaj cov ntaub ntawv tib yam teeb.
Puas yog MongoDB cov ntaub ntawv faib tawm?
MongoDB yog cov ntaub ntawv qhib-raws li database tswj cov cuab yeej uas khaws cov ntaub ntawv hauv JSON zoo li hom. Nws yog ib tug heev scalable, saj zawg zog, thiab faib NoSQL database.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
Pawg pab pawg tso cai rau koj ua dab tsi?
QHOV CHAW UA HAUJ LWM NTAWM GROUPING SETS. GROUP BY GROUPING SETS yog qhov muaj zog txuas ntxiv ntawm GROUP BY clause uas tso cai rau suav ntau pawg-los ntawm kab lus hauv ib nqe lus. Cov pab pawg teeb yog ib pawg kab ke
Dab tsi yog qhov txawv ntawm cov pab pawg thiab cov pab pawg tawm?
Nyob rau hauv sociology thiab kev puas siab puas ntsws, ib pab pawg neeg yog ib pawg neeg sib raug zoo uas tus neeg puas siab puas ntsws qhia tias yog ib tug tswv cuab. Los ntawm qhov sib txawv, ib pab pawg tawm yog ib pawg neeg sib raug zoo uas ib tus neeg tsis txheeb xyuas
Dab tsi yog qhov txawv ntawm ib pawg kev ruaj ntseg thiab pab pawg faib khoom?
Pawg Kev Ruaj Ntseg-Cov pab pawg siv los tiv thaiv kev nkag mus rau hauv kev siv network los ntawm kev tso cai; lawv kuj tuaj yeem siv los xa email. Distribution Groups-Cov pab pawg uas tsuas yog siv tau los xa email xwb; lawv muaj kev koom tes ruaj khov uas tsis tuaj yeem siv los nkag mus rau cov peev txheej network
Lub luag haujlwm ntawm pawg pawg yog dab tsi?
Ua haujlwm nrog Lub Luag Haujlwm hauv Failover Cluster Manager. Txhua lub tshuab virtual muaj ntau tau suav tias yog lub luag haujlwm hauv Failover Clustering terminology. Lub luag haujlwm suav nrog cov khoom tiv thaiv nws tus kheej nrog rau cov txheej txheem siv los ntawm Failover Clustering rau kev teeb tsa thiab lub xeev cov ntaub ntawv hais txog cov khoom tiv thaiv