{"id":78346,"date":"2020-04-18T19:42:08","date_gmt":"2020-04-18T17:42:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-timescaledb-1-7"},"modified":"2020-04-18T19:42:08","modified_gmt":"2020-04-18T17:42:08","slug":"vypusk-subd-timescaledb-1-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-subd-timescaledb-1-7","title":{"rendered":"Izlazak baze podataka TimescaleDB 1.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/timescale\/timescaledb\/releases\/tag\/1.7.0\">Objavljeno<\/a><\/noindex>   izdanje DBMS-a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.timescale.com\">TimescaleDB 1.7<\/a><\/noindex>, namijenjen za pohranu i obradu podataka u obliku vremenskih serija (rezultati mjerenja parametara u zadanim vremenskim intervalima, gdje vrijeme uzima oblik niza odgovaraju\u0107ih vrijednosti). Ovaj oblik pohrane optimalan je za aplikacije kao \u0161to su sustavi za nadzor, trading platforme i sustavi za prikupljanje metrika i stanja senzora. Pru\u017ea alate za integraciju s projektom <noindex><a rel=\"nofollow\" href=\"https:\/\/grafana.com\/\">Grafana<\/a><\/noindex> i <noindex><a rel=\"nofollow\" href=\"https:\/\/prometheus.io\/\">Prometheus<\/a><\/noindex>. <\/p>\n<p>Projekt TimescaleDB implementiran je kao pro\u0161irenje za PostgreSQL i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/timescale\/timescaledb\">distribuira se<\/a><\/noindex> pod licencom Apache 2.0. <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/timescale\/timescaledb\/tree\/master\/tsl\">Dio koda<\/a><\/noindex> s pro\u0161irenim mogu\u0107nostima isporu\u010duje se pod zasebnim proprietarnim licencama <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/timescale\/timescaledb\/blob\/master\/tsl\/LICENSE-TIMESCALE\">Timescale<\/a><\/noindex> (TSL), koja ne dopu\u0161ta izmjene, zabranjuje kori\u0161tenje koda u vanjskim proizvodima i ne dozvoljava besplatnu upotrebu u obla\u010dnim DB-ovima (database-as-a-service). <\/p>\n<p>Me\u0111u promjenama u TimescaleDB 1.7:<\/p>\n<ul>\n<li class=\"l\"> Dodana podr\u0161ka za integraciju s DBMS-om <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51604\">PostgreSQL 12<\/a><\/noindex>. Propo\u0161tena je podr\u0161ka za PostgreSQL 9.6.x i 10.x (u Timescale 2.0 ostaje podr\u0161ka samo za PostgreSQL 11+).\n<li class=\"l\"> Promijenjeno je pona\u0161anje upita s kontinuirano izvr\u0161avanim agregiranim funkcijama (agregacija kontinuirano dolaznih podataka u stvarnom vremenu). Takvi upiti sada kombiniraju materializirane prikaze s nedavno pristiglim podacima koji jo\u0161 nisu materializirani (ranije je agregacija obuhva\u0107ala samo ve\u0107 materializirane podatke). Novo pona\u0161anje primjenjuje se za novo kreirane kontinuirane agregacije, dok je za postoje\u0107e prikaze potrebno postaviti parametar &#171;timescaledb.materialized_only=false&#187; putem &#171;ALTER VIEW&#187;.\n<li class=\"l\"> U Community verziju iz komercijalne edicije preneseni su neki pro\u0161ireni alati za upravljanje \u017eivotnim ciklusom podataka, uklju\u010duju\u0107i mogu\u0107nosti za pregrupiranje podataka i obradu politika zbrinjavanja zastarjelih podataka (omogu\u0107uju pohranu samo aktualnih podataka i automatsko brisanje, agregaciju ili arhiviranje zastarjelih zapisa).\n<\/ul>\n<p>Podsjetimo da SDB TimescaleDB omogu\u0107uje upotrebu punih SQL upita za analizu akumuliranih podataka, kombiniraju\u0107i jednostavnost kori\u0161tenja svojstvenu relacijskim SDB-ovima s skalabilno\u0161\u0107u i mogu\u0107nostima koje dolaze s specijaliziranim NoSQL sustavima. Struktura pohrane optimizirana je za osiguranje visoke brzine dodavanja podataka. Podr\u017eava se grupno dodavanje setova podataka, kori\u0161tenje indeksa smje\u0161tenih u radnoj memoriji, u\u010ditavanje povijesnih mjernih podataka retroaktivno i kori\u0161tenje transakcija.<\/p>\n<p>Klju\u010dna zna\u010dajka TimescaleDB je podr\u0161ka za automatsko sekcioniranje (particioniranje) niza podataka. Ulazni tok podataka automatski se raspore\u0111uje po sekcioniranim tablicama. Sekcije se kreiraju na temelju vremena (u svakoj sekciji pohranjuju se podaci za odre\u0111eni vremenski period) ili vezane uz proizvoljni klju\u010d (na primjer, identifikator ure\u0111aja, lokaciju itd.). Za optimizaciju performansi, sekcionirane tablice mogu se rasporediti po razli\u010ditim diskovima. <\/p>\n<p>Za upite, sekcionirana baza podataka izgleda kao jedna velika tablica, nazvana hipertablica. Hipertablica predstavlja virtualno prikazivanje mno\u0161tva odvojenih tablica u kojima se akumuliraju dolazni podaci. Hipertablica se koristi ne samo za upite i dodavanje podataka, ve\u0107 i za operacije poput stvaranja indeksa i promjene strukture (&#171;ALTER TABLE&#187;), skrivaju\u0107i od programera niskorazinsku segmentiranu strukturu baze podataka. S hipertablicom se mogu koristiti bilo koje agregatne funkcije, podupiti, operacije spajanja (JOIN) s obi\u010dnim tablicama i prozorske funkcije.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52759\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0421\u0423\u0411\u0414 TimescaleDB 1.7, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0444\u043e\u0440\u043c\u0435 \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0440\u044f\u0434\u0430 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\u043a\u0430\u043a \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433\u0430, \u0442\u043e\u0440\u0433\u043e\u0432\u044b\u0435 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b, \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u0431\u043e\u0440\u0430 \u043c\u0435\u0442\u0440\u0438\u043a \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 \u0434\u0430\u0442\u0447\u0438\u043a\u043e\u0432. \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0438 \u0441 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-78346","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0421\u0423\u0411\u0414 TimescaleDB.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-subd-timescaledb-1-7\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" 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