Dab tsi yog qhov kev daws teeb meem hauv GraphQL?
Dab tsi yog qhov kev daws teeb meem hauv GraphQL?

Video: Dab tsi yog qhov kev daws teeb meem hauv GraphQL?

Video: Dab tsi yog qhov kev daws teeb meem hauv GraphQL?
Video: Txoov Lis - Kev Daws Teeb Meem Thaum Yus Chim (Hmong Motivation 2019) 2024, Kaum ib hlis
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Kev daws teeb meem yog ib phau ntawm muaj nuj nqi uas tsim cov lus teb rau a GraphQL nug. Hauv cov ntsiab lus yooj yim, a daws ua a GraphQL query handler. Txhua kev daws teeb meem hauv a GraphQL schema txais plaub qhov kev sib cav raws li muab hauv qab no − fieldName:(root, args, context, info) => { result }

Tsuas yog li ntawd, qhov kev daws teeb meem yog dab tsi?

Kev daws teeb meem txhais. Txhua daim teb ntawm txhua hom yog txhawb nqa los ntawm a muaj nuj nqi npe a daws . A daws yog a muaj nuj nqi uas daws tus nqi rau ib hom lossis teb hauv schema. Cov kev daws teeb meem tuaj yeem xa rov qab cov khoom lossis scalar xws li Strings, Numbers, Booleans, thiab lwm yam.

Ib sab saum toj no, GraphQL subscriptions siv rau dab tsi? Kev tso npe yog a GraphQL feature uas tso cai rau lub server xa cov ntaub ntawv rau nws cov neeg siv khoom thaum muaj xwm txheej tshwj xeeb tshwm sim. Kev tso npe feem ntau yog siv nrog WebSockets. Hauv qhov teeb tsa ntawd, tus neeg rau zaub mov tswj kev sib txuas ruaj khov rau nws cov neeg siv khoom.

Kuj kom paub, GraphQL cov neeg daws teeb meem ua haujlwm li cas?

Cov kev daws teeb meem yog tus yuam sij rau daim duab no. Txhua daws sawv cev rau ib daim teb, thiab ua tau siv rau nqa cov ntaub ntawv los ntawm txhua qhov chaw koj muaj. Cov kev daws teeb meem muab cov lus qhia rau tig a GraphQL ua haujlwm rau hauv cov ntaub ntawv. Cov kev daws teeb meem yog koom ua ib qho rau ib mapping rau cov teb hauv a GraphQL schema.

GraphQL ntsiab lus yog dab tsi?

Hauv GraphQL , a ntsiab lus yog ib qho khoom sib koom los ntawm txhua tus neeg daws teeb meem ntawm ib qho kev ua tiav. Nws muaj txiaj ntsig zoo rau kev khaws cov ntaub ntawv xws li kev lees paub cov ntaub ntawv, cov neeg siv tam sim no, kev sib txuas ntawm cov ntaub ntawv, cov ntaub ntawv thiab lwm yam uas koj xav tau rau kev khiav koj lub lag luam logic.

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