{"id":36120,"date":"2019-10-31T22:09:43","date_gmt":"2019-10-31T19:09:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-raspredelyonnoj-subd-tidb-3-0\/"},"modified":"2019-10-31T22:09:43","modified_gmt":"2019-10-31T19:09:43","slug":"vypusk-raspredelyonnoj-subd-tidb-3-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypusk-raspredelyonnoj-subd-tidb-3-0","title":{"rendered":"V\u00e4ljaande hajutatud andmebaasist TiDB 3.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/pingcap.com\/blog\/tidb-3.0-announcement\/\">Saadaval<\/a><\/noindex> hajutatud andmebaasi v\u00e4ljaanne <noindex><a rel=\"nofollow\" href=\"https:\/\/pingcap.com\/index\">TiDB 3.0<\/a><\/noindex>, mis on arendatud Google'i tehnoloogiatest inspireerituna <noindex><a rel=\"nofollow\" href=\"http:\/\/research.google.com\/archive\/spanner.html\">Spanner<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"http:\/\/research.google.com\/pubs\/pub38125.html\">F1<\/a><\/noindex>. TiDB kuulub h\u00fcbriids\u00fcsteemide HTAP (Hybrid Transactional\/Analytical Processing) kategooriasse, mis suudab toetada nii reaalajas tehingute (OLTP) t\u00e4itmist kui ka anal\u00fc\u00fctiliste p\u00e4ringute t\u00f6\u00f6tlemist. Projekt on kirjutatud keeles Go ja <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/pingcap\/tidb\">GNU \u00dcldine Avaliku litsentsi alusel.<\/a><\/noindex> ainekood on litsentsitud Apache 2.0 all.<\/p>\n<p>TiDB omadused:\n<\/p>\n<ul>\n<li class=\"l\"> SQL-i toetamist ja MySQL-protokolliga \u00fchilduva kliendiliidese pakkumist, mis lihtsustab TiDB-le olemasolevate MySQL-i jaoks kirjutatud rakenduste kohandamist ning v\u00f5imaldab kasutada levinud klienditeeke. Lisaks MySQL-protokollile saab andmebaasi p\u00f6\u00f6rdumiseks kasutada JSON-p\u00f5hist API-t ja Spark'i \u00fchendust.\n<\/li>\n<li class=\"l\"> SQL-i v\u00f5imalustest toetatakse indekse, agregaatfunktsioone, GROUP BY, ORDER BY, DISTINCT v\u00e4ljendeid, liitumisi (LEFT JOIN \/ RIGHT JOIN \/ CROSS JOIN), vaateid, aknafunktsioone ja alam-p\u00e4ringuid. Pakutavad v\u00f5imalused on piisavad TiDB-ga t\u00f6\u00f6tamise korraldamiseks sellistes veebirakendustes nagu PhpMyAdmin, <noindex><a rel=\"nofollow\" href=\"https:\/\/gogs.io\/\">Gogs<\/a><\/noindex> ja WordPress;\n<\/li>\n<li class=\"l\"> Horisontaalse skaleeritavuse ja t\u00f5rke taluvuse v\u00f5imalus: salvestusruumi ja arvutusv\u00f5imsust saab lihtsa uute s\u00f5lmede \u00fchendamisega suurendada. Andmed jaotatakse s\u00f5lmede vahel \u00fcleliigsusega, mis v\u00f5imaldab j\u00e4tkata t\u00f6\u00f6d \u00fcksikute s\u00f5lmede rikke korral. Rikete t\u00f6\u00f6tlemine toimub automaatselt.\n<\/li>\n<li class=\"l\"> S\u00fcsteem tagab j\u00e4rjepidevuse ja klientprogrammi jaoks n\u00e4ib see olevat \u00fcks suur andmebaas, hoolimata sellest, et tehingute t\u00e4itmiseks kasutatakse andmeid paljusid s\u00f5lmi.\n<\/li>\n<li class=\"l\"> Andmete f\u00fc\u00fcsiliseks salvestamiseks s\u00f5lmedes v\u00f5ivad kasutada erinevaid tausts\u00fcsteeme, n\u00e4iteks lokaalset salvestusmootorit GoLevelDB ja BoltDB v\u00f5i enda loodud jaotatud salvestuss\u00fcsteemi. <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/pingcap\/tikv\">TiKV<\/a><\/noindex>.\n<\/li>\n<li class=\"l\"> As\u00fcnkroonse salvestusstruktuuri muundamise v\u00f5imalus, mis v\u00f5imaldab jooksvalt lisada veerge ja indekseid, peatamata k\u00e4imasolevaid toimingute t\u00f6\u00f6tlemisi.\n<\/ul>\n<p>Peamised <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/pingcap\/tidb\/releases\/tag\/v3.0.0\">uuendused<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> \u041f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u0412 \u0442\u0435\u0441\u0442\u0435  Sysbench \u0432\u044b\u043f\u0443\u0441\u043a 3.0  \u043e\u043f\u0435\u0440\u0435\u0436\u0430\u0435\u0442 \u0432\u0435\u0442\u043a\u0443 2.1 \u0432 1.5 \u0440\u0430\u0437\u0430 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 select \u0438 update, \u0430 \u0432 \u0442\u0435\u0441\u0442\u0435  TPC-C  \u0432  4.5 \u0440\u0430\u0437\u0430. \u041e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u0442\u0440\u043e\u043d\u0443\u043b\u0438 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0432\u0438\u0434\u044b \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043f\u043e\u0434\u0437\u0430\u043f\u0440\u043e\u0441\u044b &#171;IN&#187;, &#171;DO&#187; \u0438 &#171;NOT EXISTS&#187;, \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0441\u043b\u0438\u044f\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446 (JOIN), \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435  \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u0438 \u043c\u043d\u043e\u0433\u043e\u0435 \u0434\u0440\u0443\u0433\u043e\u0435;<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/pingcap.com\/images\/blog\/oltp-point-select-in-sysbench-and-tidb-2.1.png\"><img decoding=\"async\" alt=\"V\u00e4ljaande hajutatud andmebaasist TiDB 3.0 \" src=\"\/wp-content\/uploads\/2019\/07\/f4c63d50663f95fb877fa111810439f3.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><noindex><a rel=\"nofollow\" href=\"https:\/\/pingcap.com\/images\/blog\/tpc-c-results-for-tidb-3.0-and-tidb-2.1.png\"><img decoding=\"async\" alt=\"V\u00e4ljaande hajutatud andmebaasist TiDB 3.0 \" src=\"\/wp-content\/uploads\/2019\/07\/89768360adce73a07b9248cf286053bd.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> Lisatud on uus salvestusmootor TiFlash, mis v\u00f5imaldab saavutada k\u00f5rgemat j\u00f5udlust anal\u00fc\u00fctiliste \u00fclesannete lahendamisel (OLAP) t\u00e4nu veergude p\u00f5hisele salvestamisele. TiFlash t\u00e4iendab varem pakutud salvestust TiKV, mis s\u00e4ilitab andmeid ridade l\u00f5ikes v\u00f5tme\/v\u00e4\u00e4rtuse formaadis ja on rohkem optimeeritud tehingut\u00f6\u00f6tluse (OLTP) \u00fclesannete jaoks. TiFlash t\u00f6\u00f6tab koos TiKV-ga ning andmed j\u00e4tkavad replikeerimist TiKV-s, kasutades Raft-protokolli konsensuse saavutamiseks, kuid iga Rafti replika r\u00fchma jaoks luuakse t\u00e4iendav replika, mida kasutatakse TiFlashis. Selline l\u00e4henemine v\u00f5imaldab saavutada paremat ressursside jaotamist OLTP ja OLAP \u00fclesannete vahel ning muudab tehinguandmed koheselt kergesti k\u00e4ttesaadavaks anal\u00fc\u00fctiliste p\u00e4ringute jaoks;\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/pingcap.com\/images\/blog\/tidb-htap-architecture-1.png\"><img decoding=\"async\" alt=\"V\u00e4ljaande hajutatud andmebaasist TiDB 3.0 \" src=\"\/wp-content\/uploads\/2019\/07\/ba4a4e5e9c9390c7db6fcdb4e88e7e40.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> Rakendatud on jaotatud pr\u00fcgikoguja, mis v\u00f5imaldab m\u00e4rkimisv\u00e4\u00e4rselt suurendada pr\u00fcgikogumise kiiruset suurtes klustrites ja parandada t\u00f6\u00f6 stabiilsust;\n<li class=\"l\"> Lisatud on eksperimentaalne rakendus rollip\u00f5hise juurdep\u00e4\u00e4su haldamise s\u00fcsteem (RBAC). Samuti on tagatud v\u00f5imalus m\u00e4\u00e4rata juurdep\u00e4\u00e4su\u00f5igused ANALYZE, USE, SET GLOBAL ja SHOW PROCESSLIST operatsioonidele;\n<li class=\"l\"> Lisatud on v\u00f5imalus kasutada SQL-i v\u00e4ljendeid aeglasete p\u00e4ringute logist valimiseks;\n<li class=\"l\"> Rakendatud on kiiresti taastamisprotsess kustutatud tabelite jaoks, mis v\u00f5imaldab taastada juhuslikult kustutatud andmeid;\n<li class=\"l\"> \u00dchtlustatud on salvestatud logide formaat;\n<li class=\"l\"> Lisatud on pessimistliku lukustusre\u017eiimi tugi, mis muudab tehingute t\u00f6\u00f6tlemise sarnasemaks MySQL-ile;\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043e\u043a\u043e\u043d\u043d\u044b\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 (window-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0438\u043b\u0438 \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438), \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u0445 \u0441 MySQL 8.0. \u041e\u043a\u043e\u043d\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0434\u0440\u0443\u0433\u0438\u0435 \u0441\u0442\u0440\u043e\u043a\u0438. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441\u0432\u0451\u0440\u0442\u044b\u0432\u0430\u044e\u0442 \u0441\u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430\u0431\u043e\u0440 \u0441\u0442\u0440\u043e\u043a \u0432 \u043e\u0434\u043d\u0443 \u0441\u0442\u0440\u043e\u043a\u0443, \u043e\u043a\u043e\u043d\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u044f\u0442 \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e &#171;\u043e\u043a\u043d\u0430&#187;, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043e\u0434\u043d\u0443 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0441\u0442\u0440\u043e\u043a \u0438\u0437 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e \u043d\u0430\u0431\u043e\u0440\u0430. \u0421\u0440\u0435\u0434\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043e\u043a\u043e\u043d\u043d\u044b\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439:<br \/>\nNTILE, LEAD, LAG, PERCENT_RANK, NTH_VALUE, CUME_DIST, FIRST_VALUE, LAST_VALUE, RANK, DENSE_RANK ja ROW_NUMBER;<\/p>\n<li class=\"l\"> Lisatud on eksperimentaalne tugi vaadetele (VIEW);\n<li class=\"l\"> Parandatud on sektsioonide haldamise s\u00fcsteemi (partitsioneerimise), lisatud on v\u00f5imalus jagada andmeid sektsioonideks v\u00e4\u00e4rtuste vahemike v\u00f5i hashide p\u00f5hjal;\n<li class=\"l\"> Lisatud on pistikprogrammide arendamise raamistik, n\u00e4iteks on juba ette valmistatud pistikprogrammid IP valge nimekirja kasutamiseks v\u00f5i auditilogide pidamiseks;\n<li class=\"l\"> \u041e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 &#171;EXPLAIN ANALYZE&#187; \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u043f\u043b\u0430\u043d\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u0430 (SQL Plan Management);\n<li class=\"l\">  Lisatud on k\u00e4sk next_row_id j\u00e4rgmise rea identifikaatori saamiseks;\n<li class=\"l\"> Lisatud on uued sisseehitatud funktsioonid JSON_QUOTE, JSON_ARRAY_APPEND, JSON_MERGE_PRESERVE, BENCHMARK, COALESCE ja NAME_CONST.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51060\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 TiDB 3.0, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u043e\u0434 \u0432\u043f\u0435\u0447\u0430\u0442\u043b\u0435\u043d\u0438\u0435\u043c \u043e\u0442 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 Google Spanner \u0438 F1. TiDB \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438 \u0433\u0438\u0431\u0440\u0438\u0434\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c HTAP (Hybrid Transactional\/Analytical Processing), \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b\u0445 \u043a\u0430\u043a \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439 \u0432 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u043c \u0432\u0440\u0435\u043c\u0435\u043d\u0438 (OLTP), \u0442\u0430\u043a \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u041f\u0440\u043e\u0435\u043a\u0442 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0. \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 TiDB: \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 SQL [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":27011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-36120","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=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0421\u0423\u0411\u0414 TiDB 3.0, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u043e\u0434 \u0432\u043f\u0435\u0447\u0430\u0442\u043b\u0435\u043d\u0438\u0435\u043c \u043e\u0442 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 Google Spanner \u0438 F1. 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