🥇[Tsis txhob] siv CDN

Yuav luag txhua kab lus lossis cov cuab yeej rau kev ua kom zoo ntawm qhov chaw nrawm muaj cov lus me me "siv CDN." Feem ntau, CDN yog cov ntsiab lus xa khoom network lossis cov ntsiab lus xa tawm. Peb ntawm Method Lab feem ntau ntsib cov lus nug los ntawm cov neeg siv khoom ntawm cov ncauj lus no; qee tus ntawm lawv pab lawv tus kheej CDN. Lub hom phiaj ntawm tsab xov xwm no yog kom nkag siab txog dab tsi CDN tuaj yeem muab tau raws li qhov chaw thauj khoom ceev, teeb meem dab tsi tshwm sim, thiab qhov twg siv CDN yog qhov ncaj ncees.

Qhov kev ncua sij hawm nyob hauv daim duab yog tshwm sim los ntawm kev siv CDN.

Ib me ntsis keeb kwm

Zoo li ntau cov thev naus laus zis, CDNs tawm ntawm qhov tsim nyog. Nrog rau txoj kev loj hlob ntawm Is Taws Nem raws ntawm cov neeg siv Is Taws Nem, cov kev pabcuam hauv online tau tshwm sim. Lawm, cov ntsiab lus video yuav tsum tau txiav txim siab ntau bandwidth piv rau cov ntsiab lus hauv lub vev xaib (duab, ntawv nyeem, thiab CSS lossis JS code).

Thaum sim tshaj tawm cov kwj video nyob rau tib lub sijhawm rau ntau tus neeg siv khoom los ntawm ib tus neeg rau zaub mov, tus neeg rau zaub mov hauv Is Taws Nem channel feem ntau yuav dhau los ua qhov tsis zoo. Raws li txoj cai, ob peb txhiab threads txaus los cuam tshuam ib tus neeg rau zaub mov channel. Tau kawg, tej zaum yuav muaj lwm yam kev txwv, tab sis lawv tsis tseem ceeb tam sim no. Nws tseem yog ib qho tseem ceeb uas nthuav cov neeg rau zaub mov channel yog kim heev (thiab qee zaum ua tsis tau), thiab tseem ua tsis tau. Kev thauj khoom ntawm cov channel thaum tshaj tawm yuav yog cyclical.

Qhov teeb meem ntawm kev txwv cov channel ntawm ib tus neeg rau zaub mov yog daws tau zoo los ntawm CDN. Cov neeg siv khoom tsis txuas mus rau lub server ncaj qha, tab sis rau cov nodes hauv CDN network. Hauv qhov xwm txheej zoo tshaj plaws, tus neeg rau zaub mov xa ib lub kwj mus rau CDN ntawm, thiab tom qab ntawd lub network siv nws tus kheej cov peev txheej los xa cov kwj dej no rau ntau tus neeg siv. Los ntawm qhov kev xav ntawm kev lag luam, peb tsuas yog them rau cov peev txheej tau siv tiag tiag (qhov no tuaj yeem yog bandwidth lossis tsheb khiav) thiab tau txais txiaj ntsig zoo ntawm peb cov kev pabcuam. Siv CDN kom xa cov ntsiab lus hnyav yog qhov tseeb thiab muaj tseeb. Txawm hais tias nws tsim nyog sau cia tias cov neeg ua si loj tshaj plaws hauv qhov chaw no (xws li Netflix) tsim lawv tus kheej CDNs es tsis txhob siv cov lag luam loj CDNs (Akamai, Cloudflare, Fastly, thiab lwm yam).

Raws li lub vev xaib tau hloov zuj zus, cov ntawv thov web lawv tus kheej tau dhau los ua qhov nyuaj thiab nyuaj. Qhov teeb meem ntawm kev thauj khoom ceev tuaj rau hauv ntej. Cov neeg nyiam lub vev xaib nrawm tau txheeb xyuas ntau yam teeb meem loj uas ua rau lub vev xaib thauj khoom qeeb. Ib tug ntawm lawv yog network qeeb (RTT - lub sij hawm mus ncig teb chaws los yog ping sij hawm). Kev ncua cuam tshuam rau ntau cov txheej txheem hauv lub vev xaib thauj khoom: tsim TCP kev sib txuas, pib TLS kev sib ntsib, thauj khoom txhua tus neeg siv khoom (duab, JS cov ntaub ntawv, HTML ntawv, thiab lwm yam)

Qhov teeb meem tau hnyav dua los ntawm qhov tseeb tias thaum siv HTTP / 1.1 raws tu qauv (ua ntej qhov tshwm sim ntawm SPDY, QUIC thiab HTTP / 2 qhov no tsuas yog kev xaiv), browsers qhib tsis pub ntau tshaj 6 TCP kev sib txuas rau ib tus tswv tsev. Tag nrho cov no coj mus rau kev sib txuas downtime thiab siv tsis tau cov channel bandwidth. Qhov teeb meem tau daws ib nrab los ntawm kev sau npe sharding - kev tsim cov tswv cuab ntxiv kom kov yeej qhov kev txwv ntawm tus lej ntawm kev sib txuas.

Qhov no yog qhov thib ob muaj peev xwm ntawm CDN tshwm - txo qis latency (RTT) vim muaj ntau cov ntsiab lus thiab qhov sib thooj ntawm cov nodes rau cov neeg siv. Kev ncua deb ua lub luag haujlwm txiav txim siab ntawm no: qhov ceev ntawm lub teeb yog txwv (txog 200 km / sec hauv optical fiber). Qhov no txhais tau tias txhua 000 km ntawm kev mus ncig ntxiv 1000 ms ntawm kev ncua lossis 5 ms rau RTT. Qhov no yog lub sijhawm tsawg kawg nkaus uas yuav tsum tau muaj rau kev sib kis, vim tias tseem muaj kev ncua sijhawm ntawm cov khoom siv nruab nrab. Txij li thaum CDN feem ntau paub yuav ua li cas khaws cov khoom ntawm nws cov servers, peb tuaj yeem tau txais txiaj ntsig los ntawm kev thauj khoom xws li CDN. Cov xwm txheej tsim nyog rau qhov no: lub xub ntiag ntawm cov khoom hauv cache, qhov sib thooj ntawm CDN taw tes rau tus neeg siv hauv kev sib piv nrog lub vev xaib thov server (keeb kwm server). Nws yog ib qho tseem ceeb kom nkag siab tias thaj chaw sib thooj ntawm CDN node tsis lav tsis tshua muaj latency. Routing ntawm tus neeg siv khoom thiab CDN tuaj yeem ua tau raws li tus neeg siv khoom yuav txuas mus rau tus tswv tsev hauv lwm lub tebchaws, thiab tej zaum yuav nyob rau lwm lub tebchaws. Qhov no yog qhov kev sib raug zoo ntawm cov neeg ua haujlwm hauv xov tooj thiab CDN cov kev pabcuam (peering, kev sib txuas, kev koom tes hauv IX, thiab lwm yam) thiab txoj cai khiav tsheb khiav ntawm CDN nws tus kheej los ua si. Piv txwv li, Cloudflare, thaum siv ob txoj kev npaj pib (dawb thiab pheej yig), tsis lav txog kev xa cov ntsiab lus los ntawm tus tswv tsev ze tshaj plaws - tus tswv tsev yuav raug xaiv kom ua tiav tus nqi tsawg kawg nkaus.

Ntau lub tuam txhab ua lag luam hauv Is Taws Nem nyiam cov pej xeem nyiam (tus tsim lub vev xaib thiab cov tswv kev pabcuam) rau lub ntsiab lus ntawm kev thauj khoom ceev thiab lub vev xaib ua haujlwm. Ntawm cov tuam txhab no yog Yahoo (Yslow cuab tam), AOL (WebPageTest) thiab Google (Page Speed Insights kev pabcuam), uas tab tom tsim lawv tus kheej cov lus pom zoo rau kev ua kom ceev cov chaw (feem ntau lawv cuam tshuam rau cov neeg siv khoom zoo). Tom qab ntawd, cov cuab yeej ntsuas lub vev xaib tshiab tshwm sim, uas tseem muab cov lus qhia txog kev nce lub vev xaib nrawm. Txhua qhov kev pabcuam lossis plugins muaj cov lus pom zoo sib xws: "Siv CDN." Qhov txo qis hauv network latency feem ntau raug suav hais tias yog kev piav qhia rau cov txiaj ntsig ntawm CDN. Hmoov tsis zoo, tsis yog txhua tus tau npaj siab nkag siab tias yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau CDN nws yuav tsum tau txiav Qhov tseeb, tsis yog txhua tus CDNs raug tsim muaj sib npaug.

Siv CDN Hnub no

Txhawm rau ntsuas qhov muaj txiaj ntsig ntawm kev siv CDNs, lawv yuav tsum tau muab cais tawm. Dab tsi tuaj yeem pom tam sim no hauv kev xyaum (cov piv txwv hauv cov kab ke yog, ntawm chav kawm, tsis tag):

Pub dawb CDN rau faib JS cov tsev qiv ntawv (MaxCDN, Google. Yandex).
CDN ntawm cov kev pabcuam rau cov neeg siv khoom zoo (piv txwv li, Google Fonts rau fonts, Cloudinary, Cloudimage rau cov duab).
CDN rau qhov zoo li qub thiab cov peev txheej optimization hauv CMS (muaj nyob rau hauv Bitrix, WordPress thiab lwm yam).
Lub hom phiaj dav dav CDN (StackPath, CDNVideo, NGENIX, Megafon).
CDN rau lub vev xaib nrawm (Cloudflare, Imperva, Airi).

Qhov sib txawv tseem ceeb ntawm cov hom no yog ntau npaum li cas ntawm cov tsheb khiav mus los ntawm CDN. Hom 1-3 yog kev xa tawm tsuas yog ib feem ntawm cov ntsiab lus: los ntawm ib qho kev thov mus rau ntau lub kaum os (feem ntau yog cov duab). Hom 4 thiab 5 yog tag nrho kev tso cai ntawm kev khiav tsheb los ntawm CDN.

Hauv kev xyaum, qhov no txhais tau hais tias tus naj npawb ntawm kev sib txuas uas siv los thauj lub xaib. Nrog HTTP / 2, peb siv ib qho kev sib txuas TCP rau tus tswv tsev los ua txhua qhov kev thov. Yog tias peb faib cov peev txheej rau hauv tus tswv tsev tseem ceeb (keeb kwm) thiab CDN, ces nws yog ib qho tsim nyog yuav tsum faib cov kev thov hla ntau lub npe thiab tsim ntau qhov kev sib txuas TCP. Qhov phem tshaj plaws yog: DNS (1 RTT) + TCP (1 RTT) + TLS (2-3 RTT) = 6-7 RTT. Cov qauv no tsis suav nrog kev ncua sij hawm hauv xov tooj ntawm tes rau kev ua kom lub cuab yeej xov tooj cua channel (yog tias nws tsis ua haujlwm) thiab ncua sijhawm ntawm lub xov tooj ntawm tes.

Nov yog qhov nws zoo li ntawm qhov chaw thauj khoom dej tsaws tsag (latencies rau kev txuas mus rau CDN yog qhov tseem ceeb ntawm RTT 150 ms):

Yog tias CDN npog tag nrho cov chaw khiav tsheb (tshwj tsis yog cov kev pabcuam thib peb), ces peb tuaj yeem siv ib qho kev sib txuas TCP, txuag qeeb ntawm kev txuas mus rau lwm tus tswv. Tau kawg, qhov no siv rau HTTP / 2 kev sib txuas.

Qhov sib txawv ntxiv yog txiav txim siab los ntawm kev ua haujlwm ntawm ib qho CDN - rau thawj hom nws tsuas yog hosting cov ntaub ntawv zoo li qub, rau qhov thib tsib nws tau hloov ntau hom ntawm cov ntsiab lus rau lub hom phiaj ntawm optimization.

CDN muaj peev xwm rau lub vev xaib acceleration

Cia peb piav qhia txog ntau yam ntawm CDN muaj peev xwm rau qhov chaw nrawm, tsis hais txog kev ua haujlwm ntawm ib tus neeg hom CDN, thiab tom qab ntawd saib seb qhov twg yog siv rau hauv txhua qhov ntawm lawv.

1. Compression ntawm cov ntawv nyeem

Qhov yooj yim tshaj plaws thiab nkag siab feature, tab sis feem ntau tsis zoo siv. Txhua CDNs tshaj tawm tias muaj compression raws li lawv qhov kev nrawm nrawm. Tab sis yog tias koj saib hauv kev nthuav dav ntxiv, qhov tsis txaus yuav pom meej:

qis qis rau dynamic compression tuaj yeem siv - 5-6 (piv txwv li, gzip qhov siab tshaj plaws yog 9);
static compression (cov ntaub ntawv hauv cache) tsis siv cov yam ntxwv ntxiv (piv txwv li, zopfi lossis brotli nrog qib 11)
tsis muaj kev txhawb nqa rau brotli compression zoo (txuag li 20% piv rau gzip).

Yog tias koj siv CDN, nws tsim nyog kuaj xyuas ob peb lub ntsiab lus no: nqa cov ntaub ntawv los ntawm CDN, sau nws qhov loj me thiab compress nws manually rau kev sib piv (koj tuaj yeem siv qee qhov kev pabcuam online nrog kev txhawb nqa brotli, piv txwv li. vsszhat.rf).

2. Kev teeb tsa tus neeg siv khoom caching headers

Tsis tas li ntawd ib qho yooj yim speedup feature: ntxiv headers rau cov ntsiab lus caching los ntawm tus neeg siv (browser). Qhov feem ntau tam sim no header yog cache-tswj, lub outdated ib yog tas sij hawm. Tsis tas li ntawd, Etag tuaj yeem siv tau. Qhov tseem ceeb yog qhov max-hnub nyoog ntawm cache-tswj yog qhov loj txaus (los ntawm ib hlis lossis ntau dua).

CDNs tuaj yeem txo tus nqi max-hnub nyoog, yuam tus neeg siv rov qab cov ntsiab lus zoo li qub ntau zaus. Nws tsis paub meej tias qhov no txuas nrog dab tsi: lub siab xav nce tsheb khiav hauv lub network lossis nce kev sib raug zoo nrog cov chaw uas tsis paub yuav rov pib dua lub cache. Piv txwv li, lub neej ntawd Cloudflare header cache lub sij hawm yog 1 teev, uas yog tsawg heev rau cov ntaub ntawv zoo li qub tsis hloov.

3. Duab optimization

Txij li thaum CDN siv lub luag haujlwm ntawm caching thiab ua haujlwm rau cov duab, nws yuav yog qhov laj thawj los txhim kho lawv ntawm CDN sab thiab ua haujlwm rau cov neeg siv hauv daim ntawv no. Cia peb ua qhov tshwj xeeb tam sim ntawd tias qhov no tsuas yog muaj rau CDN hom 2, 3 thiab 5.

Koj tuaj yeem ua kom zoo dua cov duab hauv ntau txoj hauv kev: siv cov ntawv compression siab heev (xws li WebP), cov encoders zoo dua (MozJPEG), lossis tsuas yog ntxuav cov metadata uas tsis tsim nyog.

Feem ntau, muaj ob hom kev ua kom zoo li no: nrog kev poob zoo thiab tsis muaj kev poob zoo. CDNs feem ntau siv zog siv lossless optimization kom tsis txhob muaj cov neeg siv khoom tsis txaus siab txog kev hloov ntawm cov duab zoo. Hauv cov xwm txheej zoo li no, qhov nce yuav tsawg heev. Hauv kev muaj tiag, feem ntau JPEG qib zoo yog ntau dua li qhov tsim nyog thiab koj tuaj yeem rov ua kom zoo dua nrog qib qis dua yam tsis muaj kev cuam tshuam rau cov neeg siv kev paub. Ntawm qhov tod tes, nws yog ib qho nyuaj rau kev txiav txim siab txog qib zoo thiab kev teeb tsa thoob ntiaj teb rau txhua qhov kev siv lub vev xaib, yog li CDNs siv ntau qhov kev saib xyuas zoo dua piv rau cov uas tuaj yeem siv los ntawm cov ntsiab lus (lub hom phiaj ntawm cov duab, hom ntawv thov web. , thiab lwm yam)

4. Optimizing TLS kev twb kev txuas

Cov tsheb feem ntau niaj hnub no taug kev hla TLS kev sib txuas, uas txhais tau tias peb siv sijhawm ntxiv rau TLS kev sib tham. Tsis ntev los no, cov thev naus laus zis tshiab tau tsim los ua kom cov txheej txheem no nrawm dua. Piv txwv li, qhov no yog EC cryptography, TLS 1.3, kev sib kho cache thiab daim pib, kho vajtse encryption acceleration (AES-NI), thiab lwm yam. Kev teeb tsa TLS kom raug tuaj yeem txo lub sijhawm txuas mus rau 0-1 RTT (tsis suav DNS thiab TCP).

Nrog cov software niaj hnub, nws tsis yooj yim rau kev siv cov kev coj ua ntawm koj tus kheej.

Tsis yog txhua CDNs siv TLS cov kev coj ua zoo tshaj plaws; koj tuaj yeem tshawb xyuas qhov no los ntawm kev ntsuas TLS lub sijhawm sib txuas (piv txwv li, hauv Webpagetest). Qhov zoo tshaj plaws rau kev sib txuas tshiab - 1RTT, 2RTT - theem nruab nrab, 3RTT thiab ntau dua - phem.

Nws tseem yuav tsum raug sau tseg tias txawm tias thaum siv TLS ntawm qib CDN, tus neeg rau zaub mov nrog peb lub vev xaib yuav tsum ua TLS, tab sis los ntawm sab CDN, vim tias kev khiav tsheb ntawm cov neeg rau zaub mov thiab CDN dhau ntawm cov pej xeem network. Hauv qhov phem tshaj plaws, peb yuav tau txais ob npaug ntawm TLS kev sib txuas qeeb (thawj rau CDN tus tswv, qhov thib ob ntawm nws thiab peb lub server).

Rau qee qhov kev siv, nws tsim nyog them nqi rau cov teeb meem kev nyab xeeb: kev khiav tsheb feem ntau yog decrypted ntawm CDN nodes, thiab qhov no yog lub sijhawm rau kev cuam tshuam tsheb. Qhov kev xaiv ntawm kev ua hauj lwm yam tsis muaj kev tshaj tawm tsheb yog feem ntau muaj nyob rau hauv cov phiaj xwm tariff rau tus nqi ntxiv.

5. Txo kev sib txuas qeeb

Qhov txiaj ntsig tseem ceeb ntawm CDN uas txhua tus neeg tham txog: qis latency (tsawg nrug) ntawm CDN tus tswv tsev thiab tus neeg siv. Ua tiav los ntawm kev tsim ib thaj chaw sib faib network architecture, uas cov tswv nyob rau hauv cov ntsiab lus ntawm cov neeg siv (cov nroog, tsheb sib pauv cov ntsiab lus, thiab lwm yam).

Hauv kev xyaum, qhov tseem ceeb rau cov tes hauj lwm sib txawv yuav yog nyob rau hauv cov cheeb tsam tshwj xeeb. Piv txwv li, Lavxias teb sab CDNs yuav muaj ntau cov ntsiab lus nyob rau hauv Russia. Cov neeg Amelikas yuav ua ntej ntawm txhua tus tsim lub network hauv Asmeskas. Piv txwv li, ib qho ntawm cov loj tshaj plaws CDN Cloudflare muaj tsuas yog 2 cov ntsiab lus nyob rau hauv Russia - Moscow thiab St. Ntawd yog, peb tuaj yeem txuag tau qhov siab tshaj plaws ntawm 10 ms ntawm latency piv rau kev tso ncaj qha hauv Moscow.

Feem ntau Western CDN tsis muaj cov ntsiab lus hauv Russia txhua. Los ntawm kev txuas mus rau lawv, koj tsuas tuaj yeem nce qhov qeeb rau koj cov neeg tuaj saib Lavxias.

6. Cov ntsiab lus optimization (minification, structural change)

Qhov feem ntau complex thiab technologically advanced point. Hloov cov ntsiab lus thaum lub sij hawm xa tuaj yuav txaus ntshai heev. Txawm hais tias peb siv minification: txo qhov code (vim qhov chaw ntxiv, cov qauv tsis tseem ceeb, thiab lwm yam) tuaj yeem cuam tshuam rau nws qhov kev ua tau zoo. Yog tias peb tham txog kev hloov pauv loj dua - hloov JS code mus rau qhov kawg ntawm HTML, kev sib koom ua ke cov ntaub ntawv, thiab lwm yam - qhov kev pheej hmoo ntawm kev cuam tshuam kev ua haujlwm ntawm lub xaib yog ntau dua.

Yog li ntawd, tsuas yog qee hom 5 CDNs ua qhov no. Tau kawg, nws yuav tsis muaj peev xwm ua kom tag nrho cov kev hloov pauv uas yuav tsum tau ua kom nrawm dua - kev tshuaj xyuas phau ntawv thiab kev ua kom zoo yuav tsum tau ua. Piv txwv li, tshem tawm cov code tsis siv los yog duplicate yog ib txoj hauj lwm phau ntawv.

Raws li txoj cai, txhua qhov kev ua kom zoo li no yog tswj hwm los ntawm kev teeb tsa thiab qhov txaus ntshai tshaj plaws yog neeg xiam oob qhab los ntawm lub neej ntawd.

Kev them nyiaj yug rau acceleration peev xwm los ntawm CDN hom

Yog li cia peb saib seb yuav ua li cas thiaj li muaj peev xwm ua kom nrawm dua qhov sib txawv ntawm CDNs muab.

Kom yooj yim, peb rov ua qhov kev faib tawm.

Pub dawb CDN rau faib JS cov tsev qiv ntawv (MaxCDN, Google. Yandex).
CDN ntawm cov kev pabcuam rau cov neeg siv khoom zoo (piv txwv li, Google Fonts rau fonts, Cloudinary, Cloudimage rau cov duab).
CDN rau qhov zoo li qub thiab cov peev txheej optimization hauv CMS (muaj nyob rau hauv Bitrix, WordPress thiab lwm yam).
Lub hom phiaj dav dav CDN (StackPath, CDNVideo, NGENIX, Megafon).
CDN rau lub vev xaib nrawm (Cloudflare, Imperva, Airi).

Tam sim no cia peb sib piv cov yam ntxwv thiab hom CDN.

Sijhawm
Hom 1
Hom 2
Hom 3
Hom 4
Hom 5

Cov ntawv compression
+–
-
+–
+–
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Cache headers
+
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+
+

Duab
-
+–
+–
-
+

TLS
-
-
-
+–
+

Kev ncua
-
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-
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txheem
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-
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Hauv cov lus no, "+" yog siv los qhia txog kev txhawb nqa tag nrho, "–" tsis muaj kev txhawb nqa, thiab "+-" yog kev txhawb nqa ib nrab. Tau kawg, tej zaum yuav muaj kev sib txawv ntawm cov lus no hauv qhov tseeb (piv txwv li, qee qhov CDN lub hom phiaj yuav siv cov yam ntxwv rau kev ua kom zoo dua cov duab), tab sis rau lub tswv yim dav dav nws muaj txiaj ntsig.

Cov txiaj ntsim tau los

Vam tias, tom qab nyeem tsab xov xwm no koj yuav muaj daim duab meej dua hais txog "siv CDN" cov lus pom zoo kom ceev koj qhov chaw.

Ib yam li hauv kev lag luam, koj tsis tuaj yeem ntseeg cov lus cog tseg ntawm kev lag luam ntawm ib qho kev pabcuam. Cov nyhuv yuav tsum tau ntsuas thiab ntsuas raws li cov xwm txheej tiag tiag. Yog tias koj twb tau siv CDN lawm, xyuas nws kom muaj txiaj ntsig siv cov txheej txheem tau piav qhia hauv tsab xov xwm.

Nws yog qhov ua tau tias siv CDN tam sim no ua rau koj lub sijhawm thauj khoom qeeb.

Raws li kev pom zoo dav dav, peb tuaj yeem tsom mus rau cov hauv qab no: kawm koj cov neeg tuaj saib, txiav txim siab nws thaj chaw. Yog tias koj cov neeg tuaj saib tseem ceeb nyob hauv ib lub vojvoog ntawm 1-2 txhiab mais, koj tsis xav tau CDN rau nws lub hom phiaj tseem ceeb - txo latency. Hloov chaw, koj tuaj yeem tso koj tus neeg rau zaub mov kom ze rau koj cov neeg siv thiab teeb tsa nws kom raug, tau txais feem ntau ntawm kev ua kom zoo tau piav qhia hauv kab lus (dawb thiab ruaj khov).

Nyob rau hauv rooj plaub koj cov neeg tuaj saib tau muab faib rau thaj chaw tiag tiag (kwv yees ntau dua 3000 mais), siv CDN zoo yuav pab tau tiag tiag. Txawm li cas los xij, koj yuav tsum nkag siab ua ntej seb koj lub CDN tuaj yeem ua kom nrawm li cas (saib cov lus muaj peev xwm thiab lawv cov lus piav qhia). Txawm li cas los xij, lub vev xaib nrawm tseem tseem yog txoj haujlwm nyuaj uas tsis tuaj yeem daws tau los ntawm kev txuas CDN. Ntxiv rau qhov kev ua kom zoo tshaj plaws saum toj no, txoj kev ua tau zoo tshaj plaws ntawm kev nrawm tseem nyob tom qab CDN: kev ua kom zoo ntawm cov neeg rau zaub mov, kev hloov pauv siab heev rau cov neeg siv khoom (tshem tawm cov lej tsis siv, ua kom zoo dua cov txheej txheem, ua haujlwm nrog cov ntsiab lus, fonts, hloov pauv, thiab lwm yam. )

Tau qhov twg los: www.hab.com

[Tsis txhob] siv CDN