{"id":103820,"date":"2022-04-19T21:36:50","date_gmt":"2022-04-19T19:36:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/yandeks-otkryl-kod-raspredelyonnoj-subd-ydb-podderzhivayushhej-sql"},"modified":"2022-04-19T21:36:50","modified_gmt":"2022-04-19T19:36:51","slug":"yandeks-otkryl-kod-raspredelyonnoj-subd-ydb-podderzhivayushhej-sql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/yandeks-otkryl-kod-raspredelyonnoj-subd-ydb-podderzhivayushhej-sql","title":{"rendered":"Yandex avalikustas SQL-i toetava jaotatud andmebaasi YDB koodi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Yandexi ettev\u00f5te avaldas hajutatud andmebaasi YDB l\u00e4htekoodid, mis toetavad SQL-i dialekte ja ACID-tehingute mehhanisme. Andmebaas on loodud nullist ning arendatakse esialgu silmas pidades talitlush\u00e4ireteta toimimist, automaatset taastumist t\u00f5rgete korral ja skaleeritavust. Tuuakse v\u00e4lja, et Yandex on k\u00e4ivitanud t\u00f6\u00f6klastreid YDB, mis sisaldavad \u00fcle 10 000 s\u00f5lme, salvestades sadu petabaiti andmeid ja teenindades miljonite jaotatud tehingute tehingute sekundis. YDB-d kasutatakse Yandexi projektides, nagu Market, Cloud, Smart Home, Alice, Metrics ja Auto.ru. Kood on kirjutatud keeltes C\/C++ ja seda levitatakse litsentsi Apache 2.0 alusel. Tutvumiseks ja kiireks k\u00e4ivitamiseks saab kasutada valmis Docker-konteinerit.    <\/p>\n<p>Projekti omadused:  <\/p>\n<ul>\n<li class=\"l\"> Andmete relatsioonilise mudeli kasutamine tabelitega. Andmete p\u00e4ringuteks ja skeemide m\u00e4\u00e4ratlemiseks kasutatakse YQL-i (YDB p\u00e4ringute keel), mis on SQL-i dialekt, kohandatud suurte jaotatud andmebaasidega t\u00f6\u00f6tamiseks. Salvestusskeemi loomisel toetatakse puustruktuuri tabelite r\u00fchmitamisest, mis meenutab katalooge failis\u00fcsteemis. Pakutakse API-d andmete t\u00f6\u00f6tlemiseks JSON-vormingus.    <center><img decoding=\"async\" alt=\"Yandex avalikustas SQL-i toetava jaotatud andmebaasi YDB koodi\" src=\"\/wp-content\/uploads\/2022\/04\/92ee2e510f01d24a0f0be6b462471cac.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>\n<li class=\"l\"> Toetatakse andmete juurdep\u00e4\u00e4su, kasutades skaneerimisp\u00e4ringuid, mis on m\u00f5eldud anal\u00fc\u00fctiliste ad-hoc p\u00e4ringute tegemiseks andmebaasides, mis toimuvad ainult lugemisre\u017eiimis ja tagastavad gRPC voogusid.\n<li class=\"l\"> Koost\u00f6\u00f6 andmebaasi ja p\u00e4ringute saatmine toimub k\u00e4surealiidese, sisseehitatud veebiliidese v\u00f5i YDB SDK komplekti kaudu, mis pakub raamatukogusid C++, C# (.NET), Go, Java, Node.js, PHP ja Python keelte jaoks.\n<li class=\"l\"> V\u00f5ime luua t\u00f5rke\u00fchenduvuse konfiguratsioone, mis j\u00e4tkavad t\u00f6\u00f6d \u00fcksikute ketaste, s\u00f5lmede, riiulite ja isegi andmekeskuste rikke korral. YDB toetab juurutamist ja s\u00fcnkroonset kopeerimist kolmes k\u00e4ttesaadavuse tsoonis, tagades klastri t\u00f6\u00f6v\u00f5ime \u00fche tsooni rikke korral.\n<li class=\"l\"> Automaatne taastamine t\u00f5rketestidega minimiseeritult rakenduste jaoks ja automaatne m\u00e4\u00e4ratud \u00fclej\u00e4\u00e4gi s\u00e4ilitamine andmete salvestamisel.\n<li class=\"l\"> Automaatne indeksite loomine esmase v\u00f5tme alusel ja v\u00f5imalus m\u00e4\u00e4rata teiseseid indekseid juhuslike veergude juurde p\u00e4\u00e4semise t\u00f5hususe suurendamiseks.\n<li class=\"l\"> Horizontaalne skaleeritavus. Koormuse ja salvestatud andmete mahu suurenedes saab klastrit laiendada, lihtsalt \u00fchendades uusi s\u00f5lmi. Arvutuste ja salvestamise tasemed on eraldatud, mis v\u00f5imaldab s\u00f5ltumatut arvutusv\u00f5imsuse ja salvestusruumi suurendamist. Andmebaas j\u00e4lgib ise andmete ja koormuse \u00fchtlast jaotust olemasolevate riistvararessursside arvestamisel. On v\u00f5imalik juurutada territoriaalselt jaotatud konfiguratsioone, mis katab mitu andmekeskust erinevates maailma osades.\n<li class=\"l\"> Range konsistentsi mudeli ja ACID-tehingute tugi p\u00e4ringute t\u00f6\u00f6tlemisel, mis h\u00f5lmavad mitut s\u00f5lme ja tabelit. Suurema j\u00f5udluse saavutamiseks on v\u00f5imalik valikuline konsistentsi kontrolli v\u00e4ljal\u00fclitamine.\n<li class=\"l\"> Automaatne andmete replikatsioon, automaatne sektsioneerimine (partisjonimine, sharding) koormuse v\u00f5i mahu suurenemise korral ning automaatne koormuse ja andmete tasakaalustamine s\u00f5lmede vahel.\n<li class=\"l\"> Andmete salvestamine otse plokkseadmetes, kasutades oma PDisk komponenti ja VDisk kihti. VDiski peal t\u00f6\u00f6tab DSProxy, mis anal\u00fc\u00fcsib diskide k\u00e4ttesaadavust ja t\u00f6\u00f6omadusi, et neid probleemide korral v\u00e4listada.\n<li class=\"l\"> Paindlik arhitektuur, mis v\u00f5imaldab luua YDB peal erinevaid teenuseid, sealhulgas virtuaalseid plokkseadmeid ja p\u00fcsik\u00f6idikuid (persistent queue). Sobivus erinevat t\u00fc\u00fcpi koormustele, sealhulgas OLTP ja OLAP (anal\u00fc\u00fcsi p\u00e4ringud).\n<li class=\"l\"> Toetab mitme kasutaja (multitenant) ja serveriteta konfiguratsioone. Kliendi autentimise v\u00f5imalus. Kasutajad saavad luua oma virtuaalseid klastreid ja andmebaase \u00fchiselt kasutatavates infrastruktuurides, v\u00f5ttes arvesse ressursikasutust p\u00e4ringute arvu ja andmete suuruse kaudu v\u00f5i rentides\/eri reservides kindlaid arvutusressursse ja salvestusruumi.\n<li class=\"l\"> V\u00f5imalus seadistada kirjeid s\u00e4ilitamise kestuse automaatseks kustutamiseks vananenud andmete eemaldamiseks.      <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57044\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f \u042f\u043d\u0434\u0435\u043a\u0441 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 YDB, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0435\u0439 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0434\u0438\u0430\u043b\u0435\u043a\u0442\u0430 SQL \u0438 ACID-\u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439. \u0421\u0423\u0411\u0414 \u0441\u043e\u0437\u0434\u0430\u043d\u0430 \u0441 \u043d\u0443\u043b\u044f \u0438 \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441 \u043e\u0433\u043b\u044f\u0434\u043a\u043e\u0439 \u043d\u0430 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u0435 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u0438, \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u0441\u0431\u043e\u044f\u0445 \u0438 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0441\u0442\u0438. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 \u042f\u043d\u0434\u0435\u043a\u0441 \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u044b \u0440\u0430\u0431\u043e\u0447\u0438\u0435 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u044b YDB, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0435 \u0431\u043e\u043b\u0435\u0435 10 \u0442\u044b\u0441\u044f\u0447 \u0443\u0437\u043b\u043e\u0432, \u0445\u0440\u0430\u043d\u044f\u0449\u0438\u0435 \u0441\u043e\u0442\u043d\u0438 \u043f\u0435\u0442\u0430\u0431\u0430\u0439\u0442 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u044b \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439 \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":103821,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f \u042f\u043d\u0434\u0435\u043a\u0441 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 YDB, 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