Video: Hom kev ntsuas twg MongoDB txhawb nqa?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
MongoDB txhawb nqa neeg siv-txhais indexes zoo li ib thaj teb index. Ib qho kev ntsuas ib zaug yog siv los tsim ib qho kev ntsuas ntawm ib daim teb ntawm ib daim ntawv. Nrog ib thaj chaw index, MongoDB tuaj yeem hla hauv ascending thiab descending kev txiav txim. Yog vim li cas tus yuam sij index ua tsis muaj teeb meem hauv qhov no.
Yog li ntawd, MongoDB indexes yog dab tsi?
Index txhawb kev ua tau zoo ntawm cov lus nug hauv MongoDB . Index yog cov ntaub ntawv tshwj xeeb [1] uas khaws ib feem me me ntawm kev sau cov ntaub ntawv teev nyob rau hauv ib qho yooj yim rau traverse daim ntawv. Cov qhov ntsuas khaws cov nqi ntawm ib qho chaw tshwj xeeb lossis cov teb, txiav txim los ntawm tus nqi ntawm daim teb.
Tsis tas li ntawd, MongoDB puas tuaj yeem siv ntau qhov indexes? MongoDB tuaj yeem siv kev sib tshuam ntawm ntau indexes ua kom tiav cov lus nug. Feem ntau, txhua qhov ntsuas kev sib tshuam muaj ob indexes ; txawm li cas los xij, MongoDB tau ua hauj lwm ntau /nested qhov ntsuas kev sib tshuam los daws cov lus nug.
Raws li, kev siv qhov Performance index hauv MongoDB yog dab tsi?
Ib Index hauv MongoDB yog cov ntaub ntawv tshwj xeeb uas tuav cov ntaub ntawv ntawm ob peb lub teb ntawm cov ntaub ntawv uas cov qhov ntsuas yog tsim. Index txhim kho qhov nrawm ntawm kev tshawb nrhiav hauv cov ntaub ntawv vim tias tsis yog kev tshawb nrhiav tag nrho cov ntaub ntawv, kev tshawb fawb tau ua nyob rau hauv indexes uas tuav ob peb teb xwb.
Dab tsi yog txoj kev siv los tsim kev ntsuas hauv MongoDB?
Tsim ib qho Index hauv MongoDB yog ua los ntawm kev siv "createIndex" txoj kev. Cov nram qab no piv txwv qhia li cas ntxiv index rau sau. Cia peb xav tias peb muaj peb cov neeg ua haujlwm sau tib yam uas muaj cov npe ntawm "Employeeid" thiab "EmployeeName".
Pom zoo:
Leej twg ua qhov ntsuas ntsuas ntsuas?
UNIT TESTING yog ib theem ntawm kev sim software uas ib tus neeg/cov khoom ntawm cov software raug kuaj. Lub hom phiaj yog los xyuas kom meej tias txhua chav ntawm lub software ua tau raws li tsim. Ib chav tsev yog qhov tsawg tshaj plaws kuaj tau ib feem ntawm ib qho software
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Dab tsi yog qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas?
Xav txog nws li no: rhiab heev yog ib qho kev ntsuas ntawm qhov hloov pauv ntawm lub koob yees duab qhov chaw saib uas tsim nyog raws li qhov muaj peev xwm tshawb pom, thiab qhov pib yog qhov ntau npaum li cas ntawm cov lus tsa suab yuav tsum tshwm sim txhawm rau txhawm rau ua rau lub tswb