Video: Puas yog Python thov asynchronous?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Python los ntawm nws tus kheej tsis yog kev tshwm sim-tsav thiab natively asynchronous (zoo li NodeJS), tab sis tib lub txiaj ntsig tseem tuaj yeem ua tiav.
Ib yam li ib tug yuav nug, puas yog Python thov synchronous?
1 Teb. Zoo li feem ntau Python cov khoom, tshwj tsis yog hais meej meej, urlib2 yog synchronous . Yog li qhov kev tua yuav thaiv kom txog thaum lub server teb. Yog li yog tias koj xav ua 30,000 thov , koj yuav tau ua ib tug thov tom qab lwm tus.
Ib yam li ntawd, Python asynchronous lossis synchronous? Hauv synchronous ntiaj teb, lub Python uas tau nyob ib ncig ntawm ntau xyoo lawm, koj hu xov tooj ncaj qha thiab txhua yam tau ua tiav raws li nws tau sau rau ntawm qhov screen. Koj tsuas yog built-in kev xaiv rau khiav code nyob rau hauv parallel nyob rau hauv tib txoj kev yog threads. Hauv asynchronous ntiaj teb no, tej yam hloov me ntsis.
Li ntawd, puas tuaj yeem asynchronous Python?
Async IO yog ib qho kev sib koom ua ke tsim qauv uas tau txais kev txhawb siab rau hauv Python , evolving sai heev los ntawm Python 3.4 txog 3.7, thiab tej zaum dhau mus. Tej zaum koj yuav xav nrog dread, Concurrency, parallelism, threading, multiprocessing.
Puas yog Python thov raug thaiv?
Zoo li urlib2, thov yog thaiv . Tab sis kuv tsis xav kom siv lwm lub tsev qiv ntawv, ib yam nkaus. Cov lus teb yooj yim tshaj yog khiav txhua thov nyob rau hauv ib txoj xov sib cais. Tshwj tsis yog tias koj muaj ntau pua ntawm lawv, qhov no yuav tsum zoo.
Pom zoo:
Puas yog log4j asynchronous?
Asynchronous logging tuaj yeem txhim kho koj daim ntawv thov kev ua tau zoo los ntawm kev ua haujlwm I / O hauv kev sib cais. Log4j 2 ua ntau yam kev txhim kho hauv cheeb tsam no. Asynchronous Loggers yog ib qho tshiab ntxiv hauv Log4j 2. Lawv lub hom phiaj yog rov qab los ntawm kev hu mus rau Logger
Qhov txawv ntawm qhov kev thov thiab kev thov yog dab tsi?
Raws li lub npe qhov txawv ntawm qhov kev thov andrequests yog qhov kev thov yog ua ntawm (l) whilerequests yog
Puas yog so synchronous lossis asynchronous?
REST web service tsis muaj dab tsi tab sis hu rau HTTP. Cov kev pabcuam REST tsis muaj dab tsi ua nrog ua synchronous lossis asynchronous. Client Side: Cov neeg hu xov tooj yuav tsum txhawb nqa asynchronous kom ua tiav nws zoo li AJAX hauv browser. Server Side: Multi- Xov ib puag ncig / Tsis thaiv IO yog siv los ua kom tiav cov kev pabcuam asynchronous
Tus neeg thov kev thov yog dab tsi?
Ib daim ntawv thov tus thov kev pab yog ib daim ntawv thov nyob ib leeg uas khiav ntawm lub tshuab neeg siv khoom thiab tau teeb tsa ua haujlwm raws li J2EE tivthaiv. Tus neeg thov kev thov yog siv los ua cov haujlwm, xws li kev tswj hwm lossis kev tswj hwm
Dab tsi yog qhov txawv ntawm kev thov synchronous thiab asynchronous thov?
Synchronous: Ib qho kev thov synchronous thaiv tus neeg siv khoom kom txog thaum ua haujlwm tiav. Asynchronous Ib qho kev thov asynchronous tsis thaiv tus neeg siv khoom xws li browser teb. Lub sijhawm ntawd, tus neeg siv tuaj yeem ua lwm yam haujlwm. Hauv qhov xwm txheej zoo li no, javascript cav ntawm browser tsis raug thaiv