{"id":32402,"date":"2019-10-31T21:46:51","date_gmt":"2019-10-31T18:46:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/ok-tech-cassandra-meetup\/"},"modified":"2019-10-31T21:46:51","modified_gmt":"2019-10-31T18:46:51","slug":"ok-tech-cassandra-meetup","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/administrirovanie\/ok-tech-cassandra-meetup","title":{"rendered":"ok.tech: Meetup o Cassandri","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"ok.tech:
\n<\/p>\n

Radite s NoSQL skladi\u0161tem Apache Cassandra?<\/h2>\n

\n23. svibnja Odnoklassniki pozivaju iskusne programere u svoj ured u Sankt Peterburgu na meetup<\/a><\/noindex>, posve\u0107en radu s Apache Cassandrom. Bitno je samo va\u0161e iskustvo rada s Cassandrom i \u017eelja da ga podijelite.
\nRegistrirajte se za doga\u0111aj<\/a><\/noindex>
\n<\/a><\/noindex>
\nMi u OK po\u010deli smo koristiti<\/a><\/noindex> Apache Cassandru 2010. godine za pohranu ocjena slika. Trenutno smo najve\u0107i korisnici Apache Cassandre u Runetu i jedni od najve\u0107ih u Europi. Imamo vi\u0161e od stotinu razli\u010ditih klastera koji se koriste i za pohranu raznih informacijskih podataka \u2014 klasa, chatova, poruka, kao i za upravljanje kriti\u010dnim infrastrukturnim podacima \u2014 mapiranje logi\u010dkih blokova na diskove velikog binarnog skladi\u0161ta \u2014 one-cold-storage<\/a><\/noindex>, upravljanje podacima unutarnjeg oblaka one-cloud<\/a><\/noindex> itd.<\/p>\n

Ukupno, pod upravom Cassandre nalazi se petabajta podataka na tisu\u0107ama \u010dvorova. Tijekom tog vremena stekli smo ogromno iskustvo u administraciji, razvoju i eksploataciji rje\u0161enja temeljenih na Cassandri i \u010dak smo razvili svoju Odnoklassniki<\/a><\/noindex> vlastitu NewSQL transakcijsku bazu podataka Sada bismo \u017eeljeli podijeliti sve to s vama \u2014 na stvarnim slu\u010dajevima iz prakse i bez tajni; Doga\u0111aj \u0107e se odr\u017eati u formatu otvorene rasprave me\u0111u sudionicima, \u0161to zna\u010di da \u0107e rasprava zauzeti ve\u0107i dio vremena.<\/a><\/noindex>.<\/p>\n

Stru\u010dnjaci OK spremni su podijeliti svoje ideje i pristupe. Voditelji doga\u0111aja \u0107e biti<\/a><\/noindex> Oleg Anastasiev Aleksandar Hristoforov<\/a><\/noindex> i Koje \u0107e biti teme?<\/a><\/noindex>.<\/p>\n

Eksploatacija:<\/h2>\n

<\/p>\n

Razmotrit \u0107emo tipi\u010dne konfiguracije \u010dvorova i klastera u razli\u010ditim produkcijskim instalacijama. Raspravit \u0107emo kako \u0161iriti klastere s porastom volumena podataka i optere\u0107enja te kako zamijeniti neispravne \u010dvorove s minimalnim utjecajem na klijente. Podijelit \u0107emo bol i sistematizirati popularne probleme. Utvrdit \u0107emo kako nadzirati klastere kako bismo unaprijed razumjeli gdje i \u0161to to\u010dno ne radi ispravno. Dotaknut \u0107emo se problema implementacije novih verzija Cassandre.<\/h3>\n

\nPerformanse:<\/p>\n

Poku\u0161at \u0107emo razumjeti na koje metrike gledati i \u0161to se mo\u017ee pode\u0161avati kako bi se metrike pobolj\u0161ale. Raspraviti \u0107emo o retransferu ili ne i ako da, kako. Identificirat \u0107emo uska grla u arhitekturi i implementaciji Cassandre i razmotriti neke in\u017eenjerske trikove kako ih zaobi\u0107i. Dotaknut \u0107emo se va\u017enog redovitog popravka i kompakcije bez degradacije performansi.<\/h3>\n

\nOtpornost na gre\u0161ke:<\/p>\n

Otpornost na gre\u0161ke:<\/h3>\n

\nHardver nije vje\u010dan, pa se kvarovi stalno doga\u0111aju, a mo\u017ee se dogoditi i da kolega pogrije\u0161i i slu\u010dajno obri\u0161e ne\u0161to, stoga \u0107emo raspraviti o oporavku od kvara diska, strojeva ili podatkovnih centara, kao i o vra\u0107anju u dosljedno stanje iz sigurnosnih kopija u slu\u010daju korisni\u010dkih gre\u0161aka.<\/p>\n

Registrirajte se<\/a><\/noindex> i pri\u010dajte o doga\u0111aju prijateljima i kolegama.
\n
Izvor: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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