Video: GraphQL cov neeg daws teeb meem ua haujlwm li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov kev daws teeb meem muab cov lus qhia rau tig a GraphQL kev ua haujlwm (kev nug, kev hloov pauv, lossis kev tso npe) rau hauv cov ntaub ntawv. Lawv rov qab tib yam ntaub ntawv uas peb teev nyob rau hauv peb schema los yog cog lus rau cov ntaub ntawv ntawd.
Dhau li ntawd, dab tsi yog cov neeg daws teeb meem hauv GraphQL?
Cov kev daws teeb meem yog tus yuam sij rau daim duab no. Txhua daws sawv cev rau ib daim teb, thiab tuaj yeem siv los 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 tau teeb tsa rau hauv ib qho rau ib daim ntawv qhia rau cov teb hauv a GraphQL schema.
Tsis tas li ntawd, koj yuav khiav GraphQL li cas? Pib nrog Apollo Server
- Kauj ruam 1: Tsim ib qhov project tshiab.
- Kauj ruam 2: Nruab qhov kev vam meej.
- Kauj Ruam 3: Txhais koj qhov GraphQL schema.
- Kauj ruam 4: Txhais koj cov ntaub ntawv teev.
- Kauj Ruam 5: Txhais tus neeg daws teeb meem.
- Kauj ruam 6: Tsim ib qho piv txwv ntawm ApolloServer.
- Kauj ruam 7: Pib lub server.
- Kauj ruam 8: Ua koj thawj cov lus nug.
Kuj tseem paub, dab tsi yog qhov kev daws teeb meem?
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.
Puas yog GraphQL asynchronous?
Asynchronous solvers Txij thaum loading los ntawm ib tug database yog ib tug asynchronous kev ua haujlwm, qhov no rov qab cog lus. Thaum cov ntaub ntawv rov qab los, peb tuaj yeem tsim thiab xa rov qab rau tib neeg cov khoom tshiab. Daim ntawv ceeb toom tias thaum tus daws teeb meem yuav tsum paub txog Cov Lus Cog Tseg, lub GraphQL lus nug tsis.
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