Video: Muaj pes tsawg qhov kev thov Google tau txais ib ob?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Google tam sim no txheej txheem ntau dua 40,000 tshawb nrhiav txhua qhov thib ob qhov nruab nrab (pom lawv ntawm no), uas txhais tau ntau dua 3.5 billion tshawb nrhiav rau hnub thiab 1.2 trillion tshawb nrhiav rau xyoo thoob ntiaj teb.
Tsis tas li ntawd, muaj pes tsawg qhov kev tshawb nrhiav Google tau txais ib hnub hauv 2018?
Raws li lub Kaum Hli 2018 , Google ua tiav 10.34billion qhia meej cov tub ntxhais nrhiav lus nug. Yog li cas ntau Google tshawb nrhiav hauv ib hnub ? Nyob ntawd yog 5.8 billion tag nrho tshawb nrhiav txhua hnub nyob nruab nrab los yog 71,780 nrhiav rau thib ob.
Qhov thib ob, pes tsawg tus neeg siv Google muaj 2019? Gmail muaj 1.5 billion active cov neeg siv hauv 2019 . Ib tus account Gmail rau txhua tsib tus neeg hauv ntiaj teb.
Ua li no, Google tau txais ntau qhov kev tshawb nrhiav?
Qhov no txhais tau ntau dua 40,000 nrhiav lus nug Google cov txheej txheem txhua thib ob ntawm qhov nruab nrab, tshaj 3.5bn tshawb nrhiav ib hnub, thiab 1.2 trillion tshawb nrhiav ib xyoo thoob ntiaj teb raws li teev los ntawm Internet Live Stats.
Dab tsi yog qhov kev tshawb nrhiav siab tshaj plaws hauv Google?
Sab saum toj 100 Google tshawb hauv Asmeskas (raws li Lub Xya Hli 2019)
# | Lo lus tseem ceeb | Nrhiav ntim |
---|---|---|
1 | 233, 100, 000 | |
2 | youtube | 195, 600, 000 |
3 | amazon | 104, 800, 000 |
4 | gmail | 92, 530, 000 |
Pom zoo:
Muaj pes tsawg theem ntawm indirection nyob rau hauv pointers koj muaj peev xwm muaj nyob rau hauv ib qho kev tshaj tawm?
Koj puas tuaj yeem muaj nyob rau hauv ib qho kev tshaj tawm? cov lus teb yog "tsawg kawg 12." txhawb ntxiv. ntawm saj, tab sis muaj qhov txwv. Muaj ob theem ntawm kev taw qhia (tus taw tes rau tus taw tes rau ib yam dab tsi) yog qhov ntau
Muaj pes tsawg qhov kev thov tuaj yeem node js?
Los ntawm kev zam txhua yam ntawd, Node. js ua tiav qib scalability ntau dua 1M sib txuas sib txuas, thiab tshaj 600k concurrent websockets sib txuas. Muaj, tau kawg, cov lus nug ntawm kev sib koom ib leeg xov ntawm txhua tus neeg thov, thiab nws yog qhov muaj peev xwm ntawm kev sau ntawv Node. js siv
Muaj pes tsawg tus lej cov ntaub ntawv tau txais kev txhawb nqa hauv Java?
Cov ntsiab lus. Muaj rau tus lej hom plaub tus lej thiab ob lub ntsiab lus ntab: byte 1 byte -128 txog 127. luv 2 bytes -32,768 txog 32,767
Muaj pes tsawg cov khoom nyob hauv ib byte pes tsawg tus nibbles nyob hauv ib byte?
Txhua 1 lossis 0 hauv tus lej binary raug hu ua me ntsis. Los ntawm qhov ntawd, ib pawg ntawm 4 cov khoom hu ua nibble, thiab 8-ntsis ua ib byte. Bytes yog ib tug zoo nkauj buzzword thaum ua hauj lwm nyob rau hauv binary
Muaj pes tsawg qhov kev thov tuaj yeem ua tus neeg rau zaub mov hauv ib ob?
Cov qauv rau kev suav cov peev txheej siab tshaj plaws ntawm koj lub vev xaib servers muaj peev xwm yog 32 CPU cores, yog li thaum txhua qhov kev thov mus rau lub vev xaib ntawm qhov nruab nrab siv 0.323 vib nas this ntawm CPU lub sijhawm - peb yuav cia siab tias nws yuav muaj peev xwm nrog kwv yees li 32 cores / 0.323 vib nas this. CPU lub sij hawm = 99 thov ib ob