{"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\/pl\/blog\/administrirovanie\/ok-tech-cassandra-meetup","title":{"rendered":"ok.tech: Meetup o Cassandrze","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

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

Czy pracujesz z NoSQL magazynem Apache Cassandra?<\/h2>\n

\n23 maja Odnoklassniki zapraszaj\u0105 do\u015bwiadczonych programist\u00f3w do swojego biura w Petersburgu na meetup<\/a><\/noindex>, po\u015bwi\u0119cony pracy z Apache Cassandra. Liczy si\u0119 tylko Twoje do\u015bwiadczenie w pracy z Cassandr\u0105 i ch\u0119\u0107 podzielenia si\u0119 nim.
\nZarejestruj si\u0119 na wydarzenie<\/a><\/noindex>
\n<\/a><\/noindex>
\nJeste\u015bmy w OK zacz\u0119li\u015bmy u\u017cywa\u0107<\/a><\/noindex> Apache Cassandra w 2010 roku do przechowywania ocen zdj\u0119\u0107. Obecnie jeste\u015bmy najwi\u0119kszymi u\u017cytkownikami Apache Cassandra w Runecie i jednymi z najwi\u0119kszych w Europie. Mamy ponad sto r\u00f3\u017cnych klastr\u00f3w, kt\u00f3re s\u0105 wykorzystywane zar\u00f3wno do przechowywania r\u00f3\u017cnych informacji produktowych \u2013 klas, czat\u00f3w, wiadomo\u015bci, jak i do zarz\u0105dzania krytycznymi danymi infrastrukturalnymi \u2013 mapowaniem logicznych blok\u00f3w na dyski du\u017cego, binarnego magazynu - one-cold-storage<\/a><\/noindex>, zarz\u0105dzanie danymi wewn\u0119trznej chmury one-cloud<\/a><\/noindex> itd.<\/p>\n

\u0141\u0105cznie w Odnoklassnikach<\/a><\/noindex> pod zarz\u0105dem Cassandry znajduje si\u0119 petabajt danych na tysi\u0105cach w\u0119z\u0142\u00f3w. W tym czasie zdobyli\u015bmy ogromne do\u015bwiadczenie w administracji, rozwoju i eksploatacji rozwi\u0105za\u0144 opartych na Cassandrze i nawet opracowali\u015bmy nasz\u0105 w\u0142asn\u0105 NewSQL transakcyjn\u0105 baz\u0119 danych<\/a><\/noindex>.<\/p>\n

Teraz chcemy podzieli\u0107 si\u0119 tym wszystkim z Wami \u2014 na prawdziwych przypadkach z praktyki i bez tajemnic; Wydarzenie odb\u0119dzie si\u0119 w formacie \u017cywej dyskusji mi\u0119dzy uczestnikami, co oznacza, \u017ce dyskusja zajmie wi\u0119kszo\u015b\u0107 czasu. Eksperci OK<\/a><\/noindex> s\u0105 gotowi podzieli\u0107 si\u0119 swoimi pomys\u0142ami i podej\u015bciem. Prowadz\u0105cymi wydarzenie b\u0119d\u0105 Oleg Anastasiev<\/a><\/noindex> i Aleksandr Khristoforov<\/a><\/noindex>.<\/p>\n

Jakie b\u0119d\u0105 tematy?<\/h2>\n

<\/p>\n

Eksploatacja:<\/h3>\n

\nZastanowimy si\u0119 nad typowymi konfiguracjami w\u0119z\u0142\u00f3w i klastr\u00f3w w r\u00f3\u017cnych instalacjach produkcyjnych. Om\u00f3wimy, jak rozszerza\u0107 klastry w miar\u0119 wzrostu danych i obci\u0105\u017cenia oraz jak wymienia\u0107 uszkodzone w\u0119z\u0142y przy minimalnym wp\u0142ywie na klient\u00f3w. Podzielimy si\u0119 problemami i usystematyzujemy popularne pu\u0142apki. Ustalimy, jak monitorowa\u0107 klastry, aby z wyprzedzeniem wiedzie\u0107, gdzie i co dok\u0142adnie dzia\u0142a nieprawid\u0142owo. Poruszymy problemy z wdra\u017caniem nowych wersji Cassandry.<\/p>\n

Wydajno\u015b\u0107:<\/h3>\n

\nSpr\u00f3bujemy zrozumie\u0107, na jakie metryki zwraca\u0107 uwag\u0119 i co mo\u017cna dostroi\u0107, aby poprawi\u0107 metryki. Rozwi\u0105\u017cemy problem, czy nale\u017cy retrawowa\u0107, a je\u015bli tak, to jak. Zidentyfikujemy w\u0105skie gard\u0142a w architekturze i realizacji Cassandry oraz om\u00f3wimy kilka in\u017cynieryjnych sztuczek, aby je omin\u0105\u0107. Poruszymy pal\u0105ce problemy regularnego naprawiania i kompilacji bez spadku wydajno\u015bci.<\/p>\n

Odporno\u015b\u0107 na awarie:<\/h3>\n

\nSprz\u0119t nie jest wieczny, dlatego awarie zdarzaj\u0105 si\u0119 na porz\u0105dku dziennym, a r\u0119ka kolegi mo\u017ce si\u0119 zadr\u017ce\u0107 i usuniemy co\u015b przypadkowo. Porozmawiajmy wi\u0119c o odzyskiwaniu po awariach dysk\u00f3w, maszyn lub centr\u00f3w danych, jak r\u00f3wnie\u017c o przywracaniu do sp\u00f3jnego stanu z kopii zapasowych w przypadku b\u0142\u0119d\u00f3w operatora.<\/p>\n

Zarejestruj si\u0119<\/a><\/noindex> i opowiedzcie o wydarzeniu swoim przyjacio\u0142om i wsp\u00f3\u0142pracownikom.
\n
\u0179r\u00f3d\u0142o: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0431\u043e\u0442\u0430\u0435\u0442\u0435 \u0441 NoSQL-\u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435\u043c Apache Cassandra? 23 \u043c\u0430\u044f \u041e\u0434\u043d\u043e\u043a\u043b\u0430\u0441\u0441\u043d\u0438\u043a\u0438 \u043f\u0440\u0438\u0433\u043b\u0430\u0448\u0430\u044e\u0442 \u043e\u043f\u044b\u0442\u043d\u044b\u0445 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0432 \u0441\u0432\u043e\u0439 \u043e\u0444\u0438\u0441 \u0432 \u041f\u0435\u0442\u0435\u0440\u0431\u0443\u0440\u0433\u0435 \u043d\u0430 \u043c\u0438\u0442\u0430\u043f, \u043f\u043e\u0441\u0432\u044f\u0449\u0435\u043d\u043d\u044b\u0439 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 Apache Cassandra. \u0412\u0430\u0436\u0435\u043d \u043b\u0438\u0448\u044c \u0432\u0430\u0448 \u043e\u043f\u044b\u0442 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 Cassandra \u0438 \u0436\u0435\u043b\u0430\u043d\u0438\u0435 \u0438\u043c \u043f\u043e\u0434\u0435\u043b\u0438\u0442\u044c\u0441\u044f. \u0417\u0430\u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043d\u0430 \u043c\u0435\u0440\u043e\u043f\u0440\u0438\u044f\u0442\u0438\u0435 \u041c\u044b \u0432 \u041e\u041a \u043d\u0430\u0447\u0430\u043b\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c Apache Cassandra \u0432 2010 \u0433\u043e\u0434\u0443 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043e\u0446\u0435\u043d\u043e\u043a \u0444\u043e\u0442\u043e. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043c\u044b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24215,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-32402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47ok.tech: Meetup Cassandry | ProHoster","description":"Pracujesz z NoSQL - magazynem Apache Cassandra? 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