{"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\/ro\/blog\/news\/paypal-otkryl-kod-subd-junodb","title":{"rendered":"PayPal a deschis codul pentru SGBD JunoDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Compania PayPal a deschis codurile surs\u0103 pentru sistemul de gestionare a bazelor de date rezistente la defec\u021biuni JunoDB, care manipuleaz\u0103 datele \u00een format cheie-valoare. Sistemul a fost conceput ini\u021bial av\u00e2nd \u00een vedere un nivel ridicat de securitate, scalabilitate orizontal\u0103, rezilien\u021b\u0103 \u0219i capacitatea de a gestiona zeci de mii de conexiuni simultane cu \u00eent\u00e2rzieri previzibile. Practic, toate serviciile de la PayPal, de la autentificarea utilizatorilor p\u00e2n\u0103 la procesarea tranzac\u021biilor financiare, depind de JunoDB. Codul proiectului este scris \u00een limbajul Go (biblioteca clientului este \u00een Java) \u0219i este distribuit sub licen\u021ba Apache 2.0. \u00cen cadrul dezvolt\u0103rii continue, se vor accepta corecturi, \u00eembun\u0103t\u0103\u021biri \u0219i modific\u0103ri din partea comunit\u0103\u021bii. <\/p>\n

Arhitectura JunoDB se bazeaz\u0103 pe utilizarea unui echilibrator de sarcin\u0103, care prime\u0219te cereri de la aplica\u021bii client \u0219i le distribuie \u00eentre serverele proxy, care acceseaz\u0103 simultan un grup servere<\/a> de stocare \u00een timpul proces\u0103rii cererii. Fiecare server proxy stabile\u0219te conexiuni cu toate servers<\/a> serverele de stocare \u0219i redirec\u021bioneaz\u0103 cererile c\u0103tre grupul de servere de stocare pe baza indexului de sec\u021bionare, care este stocat \u00eentr-un sistem distribuit de gestionare a configura\u021biei etcd.

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

Datele sunt sec\u021bionate \u0219i alocate nodurilor de stocare prin utilizarea hashing-ului, ceea ce permite reducerea mut\u0103rii datelor atunci c\u00e2nd nodurile din cluster cresc sau scad. Pentru a asigura rezilien\u021ba, fiecare por\u021biune de date este replicat\u0103 pe mai multe noduri de stocare, ceea ce permite p\u0103strarea informa\u021biei \u00een cazul defect\u0103rii unor servere individuale. Se suport\u0103 crearea de stoc\u0103ri distribuite geografic, \u00een care grupuri de noduri sunt amplasate \u00een diferite centre de date.

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

Pe nodurile de stocare, datele sunt plasate \u00een memorie sau \u00een stocarea local\u0103 bazat\u0103 pe biblioteca RocksDB. Atunci c\u00e2nd sunt stocate permanent, datele sunt plasate \u00eentr-o form\u0103 criptat\u0103 (cheia de criptare poate fi determinat\u0103 at\u00e2t de utilizator, c\u00e2t \u0219i setat\u0103 la nivelul proxy-ului).

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

Pentru a accesa baza de date din aplica\u021bii, este furnizat\u0103 o bibliotec\u0103 client, care ofer\u0103 un API pentru aplica\u021bii \u00een limbile Java, Go \u0219i C++. Partea client este maxim simplificat\u0103, iar logica complex\u0103 \u0219i set\u0103rile sunt, pe c\u00e2t posibil, mutate la nivelul SGBD-ului. Interac\u021biunea \u00eentre client \u0219i echilibratorul de sarcin\u0103 sau proxy se realizeaz\u0103 printr-un canal de comunica\u021bie criptat. Pentru gestionare \u0219i trimiterea de cereri, se poate utiliza interfa\u021ba liniei de comand\u0103, care reproduce toate func\u021bionalit\u0103\u021bile API-ului client. <\/p>\n

Sistemul este proiectat pentru a gestiona cereri cu \u00eent\u00e2rzieri previzibile sc\u0103zute, de exemplu, un cluster format din trei noduri de stocare \u0219i un proxy, creat din medii n1-highmem-32 (32 CPU Intel Xeon 2.30GHz, 214G RAM \u0219i 450G stocare pe baz\u0103 de SSD), a reu\u0219it s\u0103 ofere \u00eent\u00e2rzieri fixe ce nu dep\u0103\u0219esc 2.5 ms \u00een 95% din cazuri \u0219i 16 ms \u00een 99% \u00een timpul proces\u0103rii a 200 de mii de conexiuni TLS simultane \u0219i a unui flux de 15 mii cereri pe secund\u0103 (la 3000 de conexiuni simultane \u0219i un flux de 80 de mii cereri pe secund\u0103, \u00eent\u00e2rzierile nu au dep\u0103\u0219it 6 ms \u00een 95% din cazuri \u0219i 15 ms \u00een 99%). La PayPal, serviciile bazate pe JunoDB gestioneaz\u0103 aproximativ 350 de miliarde de cereri pe zi.

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

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f PayPal \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0439 \u0421\u0423\u0411\u0414 JunoDB, \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 \u043a\u043b\u044e\u0447-\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435. \u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u0441\u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0441 \u043e\u0433\u043b\u044f\u0434\u043a\u043e\u0439 \u043d\u0430 \u0432\u044b\u0441\u043e\u043a\u0443\u044e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c, \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\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 a deschis codul SGBD-ului JunoDB | ProHoster","description":"Compania PayPal a deschis codurile surs\u0103 ale SGBD-ului rezistent JunoDB, care manipuleaz\u0103 datele \u00een format de tip 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