{"id":108647,"date":"2023-05-21T12:49:09","date_gmt":"2023-05-21T10:49:12","guid":{"rendered":"https:\/\/prohoster.info\/?p=108647"},"modified":"2023-05-22T10:28:52","modified_gmt":"2023-05-22T08:28:52","slug":"paypal-otkryl-kod-subd-junodb","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/paypal-otkryl-kod-subd-junodb","title":{"rendered":"PayPal je odprl kodo SODB JunoDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Podjetje PayPal je odprlo izvorno kodo odporne podatkovne baze JunoDB, ki upravlja podatke v formatu klju\u010d-vrednost. Sistem je bil prvotno zasnovan z mislijo na visoko varnost, horizontalno raz\u0161irljivost, odpornost na napake in sposobnost obdelave stotin tiso\u010d hkratnih povezav s predvidljivimi zamudami. V PayPalu so prakti\u010dno vse storitve, od prijave uporabnikov do obdelave finan\u010dnih transakcij, odvisne od JunoDB. Koda projekta je napisana v jeziku Go (odjemalska knji\u017enica v Javi) in se distribui\u0161e pod licenco Apache 2.0. V nadaljnjem razvoju bodo sprejete izbolj\u0161ave, popravki in spremembe s strani skupnosti. <\/p>\n

Arhitektura JunoDB temelji na uporabi uravnote\u017eevalnika obremenitve, ki sprejema zahteve od odjemalskih aplikacij in jih razporeja med proxy stre\u017eniki, ki hkrati dostopajo do skupine stre\u017enikov<\/a> hranilnikov pri obdelavi zahteve. Vsak proxy stre\u017enik vzpostavi povezave takoj z vsemi stre\u017eniki<\/a> hranilniki in preusmeri zahteve na skupino stre\u017enikov za shranjevanje na podlagi indeksa particioniranja, ki se hrani v razporejeni sistemu za shranjevanje konfiguracije etcd.

\"PayPal<\/center> <\/p>\n

Podatki se particionirajo in povezujejo z enotami shranjevanja z uporabo hashranja, kar zmanj\u0161a premikanje podatkov ob pove\u010devanju ali zmanj\u0161evanju enot v grozdu. Za zagotavljanje odpornosti na napake se vsak del podatkov replicira na ve\u010d enotah shranjevanja, kar omogo\u010da ohranitev informacij v primeru okvare posameznih stre\u017enikov. Podprto je tudi ustvarjanje geografsko razporejenih shranjevanj, kjer so skupine enot name\u0161\u010dene v razli\u010dnih podatkovnih centrih.

\"PayPal<\/center> <\/p>\n

Na enotah shranjevanja podatki le\u017eijo v pomnilniku ali v lokalnem shranjevanju na osnovi knji\u017enice RocksDB. Pri stalnem shranjevanju so podatki shranjeni v \u0161ifrirani obliki (klju\u010de \u0161ifriranja lahko definira tako odjemalec kot se nastavi na ravni proxy stre\u017enika).

\"PayPal<\/center> <\/p>\n

Za dostop do baze podatkov iz aplikacij je na voljo odjemalska knji\u017enica, ki nudi API za aplikacije v programskih jezikih Java, Go in C++. Odjemalska komponenta je \u010dim bolj poenostavljena, kompleksna logika in nastavitve pa so po mo\u017enosti prenesene na stran SGBD. Interakcija med odjemalcem in obte\u017eevalnikom ali proxyjem poteka preko \u0161ifriranega komunikacijskega kanala. Za upravljanje in po\u0161iljanje zahtevkov lahko uporabite vmesnik ukazne vrstice, ki ponavlja vse mo\u017enosti odjemalskega API-ja. <\/p>\n

Sistem je zasnovan za obdelavo zahtevkov z napovedljivo nizkimi zakasnitvami, na primer, grozd iz treh shranjevalnih vozli\u0161\u010d in enega proxyja, oblikovan iz okolij n1-highmem-32 (32 CPU Intel Xeon 2.30GHz, 214G RAM in 450G shranjevanja na osnovi SSD), je lahko zagotovil fiksne zakasnitve, ki niso presegale 2,5 ms v 95% primerov in 16 ms v 99% pri obdelavi 200 tiso\u010d hkratnih TLS povezav in toku 15 tiso\u010d zahtevkov na sekundo (pri 3000 hkratnih povezavah in toku 80 tiso\u010d zahtevkov na sekundo zakasnitve niso presegale 6 ms v 95% primerov in 15 ms v 99%). V PayPal-ovih storitvah, ki temeljijo na JunoDB, obravnavajo pribli\u017eno 350 milijard zahtevkov na dan.

\"PayPal<\/center>
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u0443\u044e \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0441\u0442\u044c, \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0441\u043e\u0442\u043d\u0438 \u0442\u044b\u0441\u044f\u0447 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u0441 \u043f\u0440\u0435\u0434\u0441\u043a\u0430\u0437\u0443\u0435\u043c\u044b\u043c\u0438 \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0430\u043c\u0438. \u0412 PayPal \u043f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0432\u0441\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u044b, \u043e\u0442 \u0432\u0445\u043e\u0434\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0434\u043e \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0444\u0438\u043d\u0430\u043d\u0441\u043e\u0432\u044b\u0445 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439, \u0437\u0430\u0432\u044f\u0437\u0430\u043d\u044b \u043d\u0430 JunoDB. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":108648,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-108647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47PayPal je odprl kodo SGBD JunoDB | ProHoster","description":"Podjetje PayPal je odprlo izvorne kode za zanesljivo SGBD JunoDB, ki obdeluje podatke v formatu 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