{"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\/no\/blog\/news\/paypal-otkryl-kod-subd-junodb","title":{"rendered":"PayPal har \u00e5pnet kildekoden til JunoDB-database systemet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Selskapet PayPal har \u00e5pnet kildekoden til den feiltolerante databasen JunoDB, som h\u00e5ndterer data i n\u00f8kkel-verdi format. Systemet er opprinnelig designet med tanke p\u00e5 h\u00f8y sikkerhet, horisontal skalering, feiltoleranse og evnen til \u00e5 h\u00e5ndtere hundretusener av samtidige tilkoblinger med forutsigbare forsinkelser. I PayPal er nesten alle tjenester, fra brukerp\u00e5logging til behandling av finansielle transaksjoner, avhengige av JunoDB. Koden til prosjektet er skrevet i Go (klientbiblioteket er i Java) og distribueres under Apache 2.0-lisensen. Under videreutvikling vil det bli tatt imot feilrettinger, forbedringer og endringer fra fellesskapet. <\/p>\n

Arkitekturen til JunoDB er basert p\u00e5 bruk av en lastbalanserer som tar imot foresp\u00f8rselene fra klientapplikasjoner og distribuerer dem mellom proxy-servere, samtidig som den henvender seg til en gruppe servere<\/a> lagring under behandling av foresp\u00f8rselen. Hver proxy-server oppretter forbindelser til alle servere<\/a> lagringsenheter og omdirigerer foresp\u00f8rslene til lagringsgruppen basert p\u00e5 partisjoneringsindeksen, som lagres i det distribuerte konfigurasjonslagringssystemet etcd.

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

Dataene partisjoneres og knyttes til lagringsnoder ved hjelp av hashing, noe som reduserer databevegelsen ved \u00f8kning eller reduksjon av noder i klyngen. For \u00e5 sikre feiltoleranse blir hver databit replisert p\u00e5 flere lagringsnoder, noe som gj\u00f8r det mulig \u00e5 bevare informasjon selv n\u00e5r enkelte servere g\u00e5r ned. Det st\u00f8ttes opprettelse av geografisk distribuerte lagringsl\u00f8sninger, der grupper av noder er plassert i forskjellige datasentre.

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

P\u00e5 lagringsnodene lagres dataene enten i RAM eller i lokalt lagret basert p\u00e5 RocksDB-biblioteket. Ved permanent lagring lagres dataene i kryptert form (krypteringsn\u00f8kkelen kan defineres av klienten, eller settes p\u00e5 proxy-niv\u00e5).

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

For interacting with the database from applications, a client library is provided that offers an API for applications in Java, Go, and C++. The client side is streamlined, while complex logic and configurations are offloaded to the DBMS wherever possible. Communication between the client and the load balancer or proxy occurs over an encrypted channel. A command line interface can be used for management and sending requests, which reproduces all the functionality of the client API. <\/p>\n

The system is designed to handle requests with predictably low latencies. For example, a cluster of three storage nodes and one proxy, formed from n1-highmem-32 environments (32 CPUs Intel Xeon 2.30GHz, 214G RAM, and 450G SSD-based storage), managed to provide fixed latencies not exceeding 2.5 ms in 95% of cases and 16 ms in 99% when processing 200,000 simultaneous TLS connections and a stream of 15,000 requests per second. (With 3,000 simultaneous connections and a stream of 80,000 requests per second, latencies did not exceed 6 ms in 95% of cases and 15 ms in 99%.) At PayPal, JunoDB-based services handle about 350 billion requests a day.

\"PayPal<\/center>
\n
Kilde: 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\udd47 PayPal has released the JunoDB DBMS code | ProHoster","description":"PayPal has opened the source code of the fault-tolerant DBMS JunoDB, which manipulates data in key-value 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