Video: Puas yog memcached siv hashing zoo ib yam?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Sib npaug hashing nrog Memcached los yog Redis, thiab ib thaj rau libketama. Qhov no yog ib howto sib hashing ntawm cov yuam sij hauv cov khw muag khoom tseem ceeb, nrog rau kev tsom mus rau cache servers. Cov cai yog cache-server agnostic: muaj yog tsis muaj dab tsi tshwj xeeb rau Memcached lossis Redis hauv nws, thiab nws tuaj yeem siv nrog lwm cov servers.
Khaws qhov no hauv kev txiav txim siab, qhov twg yog qhov sib xyaw hashing siv?
Nyob rau hauv ib tug faib system, sib hashing pab daws cov teeb meem hauv qab no: Txhawm rau muab elastic scaling (ib nqe lus siv piav qhia dynamic ntxiv / tshem tawm cov servers raws li kev siv thauj khoom) rau cache servers. Scale tawm ib txheej ntawm cov nodes zoo li NoSQL databases.
Puas yog Redis siv cov hashing zoo ib yam? Cov hash slots zoo ib yam li cov nodes hauv virtual sib hashing . Cassandra cov ntaub ntawv faib tawm yog yuav luag tib yam li redis pawg, thiab kab lus no hais tias nws yog sib hashing . Tab sis lub redis pawg turorial hais redis pawg ua tsis yog siv cov hash sib xws.
Yog li ntawd, Cassandra puas siv hashing zoo ib yam?
2 Teb. Cassandra ua tsis yog siv hashing zoo ib yam nyob rau hauv ib txoj kev uas koj tau piav. Txhua lub rooj muaj qhov tseem ceeb muab faib (koj tuaj yeem xav txog nws yog qhov tseem ceeb lossis thawj feem ntawm nws hauv RDBMS cov lus), tus yuam sij no yog hash siv yws 3 algorithm. Tag nrho hash qhov chaw tsim ib lub nplhaib continuos los ntawm qis tshaj tau hash mus rau qhov siab tshaj
Vim li cas peb thiaj xav tau kev sib koom ua ke?
hloov thiab txhua yam khoom ua hash mus rau qhov chaw tshiab. Qhov no ua tau ua kev puas tsuaj txij li lub hauv paus ntsiab lus servers yog dej nyab nrog kev thov los ntawm cov tshuab cache. Li no yuav tsum muaj hashing zoo ib yam kom tsis txhob swamping ntawm servers. Sib npaug hashing maps cov khoom rau tib lub tshuab cache, kom deb li deb tau.
Pom zoo:
Kuv puas tuaj yeem siv LastPass ntawm ntau yam khoom siv?
Tam sim no koj tuaj yeem siv LastPass ntawm MultipleDevices dawb. Pib hnub no, LastPass yuav tsis them nyiaj ntxiv rau kev nkag mus rau koj tus password vault los ntawm ntau hom khoom siv. Qhov ntawd txhais tau tias cov neeg siv dawb tam sim no tuaj yeem nkag mus rau lawv tus password vaults ntawm lawv lub xov tooj thiab lawv lub desktop tsis muaj nqi ntxiv
Puas txhais tau tias yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas muab cov lus qhia rau kev siv cov khoom?
Kev them nyiaj yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas txiav txim siab seb qhov khoom siv tau li cas
Dab tsi yog qhov txawv ntawm kev sib raug zoo unary kev sib raug zoo binary thiab kev sib raug zoo ternary?
Kev sib raug zoo tsis sib xws yog thaum ob tus neeg koom hauv kev sib raug zoo yog tib lub koom haum. Piv txwv li: Cov ncauj lus yuav yog qhov yuav tsum tau ua ua ntej rau lwm yam kev kawm. Kev sib raug zoo ternary yog thaum peb lub koom haum koom nrog kev sib raug zoo
Dab tsi yog kev siv hashing hauv Java?
Hashing txhais tau tias siv qee qhov kev ua haujlwm lossis algorithm los qhia cov ntaub ntawv kwv yees rau qee tus neeg sawv cev tus lej suav. Qhov no hu ua hash code (lossis hash yooj yim) tuaj yeem siv los ua ib txoj hauv kev kom nqaim peb txoj kev tshawb nrhiav thaum nrhiav cov khoom hauv daim ntawv qhia
Puas yog nws zoo dua los siv IP zoo li qub lossis DHCP?
Tsis yog, siv qhov chaw nyob zoo li qub tsis yog nrawm dua li siv DHCP chaw nyob. Lub hom phiaj hauv tsab xov xwm no yog kom tau txais ob lub PCs ntawm tib lub cev network ntu mus rau tib IP subnet, kom lub router hop tuaj yeem raug tshem tawm ntawm cov ntaub ntawv hloov chaw network