2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Dab tsi yog qhov siv HashMap hauv ib puag ncig sib txuas? … Nws yog ib qho teeb meem yog tias ntau cov xov ntxiv rau tib yam HashMap yam tsis muajnws raug synchronized. Txawm hais tias tsuas yog 1 xov hloov kho HashMap thiab lwm cov xov tau nyeem los ntawm tib daim ntawv qhia tsis muaj synchronization, koj yuav khiav mus rau qhov teeb meem.
Koj puas tuaj yeem siv HashMap hauv ib puag ncig sib txuas?
Koj yuav tsum paub tseeb tias: Txhua qhov hloov tshiab rau HashMap tau ua tiav ua ntej cov xov tam sim ntawd thiab cov xov uas tsim daim ntawv qhia kuj forks cov xov. Cov xov tsuas yog siv HashMap hauv hom nyeem nkaus xwb- txawm tias tau txais lossis rov ua dua yam tsis tau tshem tawm. Tsis muaj xov xwm hloov kho daim ntawv qhia.
Vim li cas HashMap yuav tsum tsis txhob siv nyob rau hauv ib puag ncig multithreaded tuaj yeem ua rau lub voj tsis kawg ib yam?
Lub peev xwm ntawm HashMap yog 16 thiab Load factor yog 0.75, uas txhais tau hais tias HashMap yuav muab ob npaug rau nws lub peev xwm thaum 12th Key-Value khub nkag rau hauv daim ntawv qhia (160.75=12). Thaum 2 xov sim nkag mus rau HashMap ib txhij, ces koj yuav ntsib qhov tsis kawg. Xov xwm 1 thiab xov 2 sim muab 12 tus yuam sij-tus nqi.
HashMap puas tau txais xov zoo?
HashMap tsis yog synchronized. Nws tsis yog xov-kev nyab xeeb thiab tsis tuaj yeem sib koom ntawm ntau cov xov yam tsis muaj kev sib txuas kom raug cai whereas Hashtable yog synchronized.
Dab tsi yog qhov zoo tshaj plaws rau ntau txoj xovib puag ncig?
Cov lus teb yog " ConcurrentHashMap"
Pom zoo:
Qhov txawv ntawm ib puag ncig thiab ib puag ncig rov qab yog dab tsi?
Muaj ob lub suab hais lus rau ob sab ntawm chav. Cov neeg hais lus muab tso rau ntawm ib sab lossis me ntsis tom qab qhov chaw mloog, xws li lub suab ntawd tig mus rau cov neeg mloog. Cov neeg hais lus rov qab tau muab tso rau tom qab sab ib puag ncig cov neeg hais lus thiab thaj chaw mloog.
Qhov twg yog qhov txuas txuas txuas txuas ntxiv?
Qhia kom meej tias Uplink Connectivity Monitor tau qhib nyob rau hauv Settings > System Settings > Controller Configuration > Uplink Connectivity Monitor. Kuv yuav ua li cas lov tes taw uplink saib txuas? Txhawm rau lov tes taw "
Ibs qhov mob puas tuaj yeem nyob ib puag ncig?
Qhov mob hauv cov neeg mob IBS tsis zoo nyob hauv cheeb tsam, tab sis qee zaum yuav yog qhov mob sab saud, uas tuaj yeem ua rau tsis meej pem nrog mob biliary. Puas IBS tsuas yog mob hauv ib qho xwb? Kev Tshawb Fawb qhia 3 ntawm 4 tus neeg nrog IBS qhia txawm tias nruam lossis nquag plab mob.
Puas yog lub tshuab ntaus ntawv tau tsim nyob rau hauv kev lag luam kiv puag ncig?
Qhov kev tsim ntawm lub tshuab ntaus ntawv zoo ib yam li ntau lwm yam kev tsim khoom thaum lub sij hawm muaj kiv puag ncig. Nws hloov ntau txoj kev lag luam xws li ntawv xov xwm ua haujlwm. Thaum twg yog lub tshuab ntaus ntawv tsim nyob rau hauv Industrial Revolution?
Nyob hauv kev sib txuas lus sib txuas lus?
Nyob rau hauv nplooj ntawv no koj tuaj yeem tshawb pom 11 cov lus sib piv, cov lus sib piv, cov lus qhia tsis zoo, thiab cov lus hais txog kev sib tham, xws li: domino-effect, causal nexus,, saw xwm txheej, tshuaj-reactivation, concatenation ntawm cov xwm txheej, hmoov tsheb ciav hlau, ripples nyob rau hauv lub pas dej, vicious-lub voj voog, fission thiab kinetic txoj kev xav.
