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

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

Arbetar du med NoSQL-databasen Apache Cassandra?<\/h2>\n

\nDen 23 maj bjuder Odnoklassniki in erfarna utvecklare till sitt kontor i St. Petersburg f\u00f6r ett meetup<\/a><\/noindex>, som handlar om att arbeta med Apache Cassandra. Det viktiga \u00e4r bara din erfarenhet av att arbeta med Cassandra och din vilja att dela med dig av den.
\nRegistrera dig f\u00f6r evenemanget<\/a><\/noindex>
\n<\/a><\/noindex>
\nVi p\u00e5 OK b\u00f6rjade anv\u00e4nda<\/a><\/noindex> Apache Cassandra \u00e5r 2010 f\u00f6r att lagra fotov\u00e4rderingar. Idag \u00e4r vi de st\u00f6rsta anv\u00e4ndarna av Apache Cassandra i Ryssland och bland de st\u00f6rsta i Europa. Vi har mer \u00e4n hundra olika kluster som anv\u00e4nds b\u00e5de f\u00f6r att lagra olika produktinformation \u2014 klasser, chattar, meddelanden \u2014 och f\u00f6r att hantera kritiska infrastrukturella data \u2014 kartl\u00e4ggning av logiska block p\u00e5 diskar i en stor bin\u00e4r lagring \u2014 one-cold-storage<\/a><\/noindex>, hantering av data i det interna molnet one-cloud<\/a><\/noindex> och s\u00e5 vidare.<\/p>\n

Sammanlagt lagras petabyte av data under Cassandra i Odnoklassniki<\/a><\/noindex> p\u00e5 tusentals noder. Under denna tid har vi samlat en enorm erfarenhet av administration, utveckling och drift av l\u00f6sningar baserade p\u00e5 Cassandra och till och med utvecklat v\u00e5r egen NewSQL transaktionell databas<\/a><\/noindex>.<\/p>\n

Nu skulle vi vilja dela allt detta med er \u2014 med verkliga fall fr\u00e5n praktiken och utan hemligheter; Evenemanget kommer att h\u00e5llas i form av en \u00f6ppen diskussion mellan deltagarna, vilket inneb\u00e4r att diskussionen kommer att ta upp merparten av tiden. Experter fr\u00e5n OK<\/a><\/noindex> \u00e4r redo att dela sina id\u00e9er och metoder. Evenemanget kommer att ledas av Oleg Anastasyev<\/a><\/noindex> och Alexander Kristoforov<\/a><\/noindex>.<\/p>\n

Vilka \u00e4mnen kommer att tas upp?<\/h2>\n

<\/p>\n

Drift:<\/h3>\n

\nVi kommer att titta p\u00e5 typiska konfigurationer av noder och kluster i olika produktionsinstallationer. Vi kommer att diskutera hur man kan ut\u00f6ka kluster i takt med \u00f6kande datam\u00e4ngder och belastningar och hur man byter ut defekta noder med minimal p\u00e5verkan p\u00e5 kunderna. Vi kommer att dela med oss av erfarenheter och systematisera vanliga fallgropar. Vi kommer att ta reda p\u00e5 hur man \u00f6vervakar kluster f\u00f6r att i f\u00f6rv\u00e4g f\u00f6rst\u00e5 var och vad som fungerar d\u00e5ligt. Vi kommer att ber\u00f6ra problemen med att distribuera nya versioner av Cassandra.<\/p>\n

Prestanda:<\/h3>\n

\nVi kommer att f\u00f6rs\u00f6ka f\u00f6rst\u00e5 vilka m\u00e4tetal vi ska titta p\u00e5 och vad vi kan justera f\u00f6r att f\u00f6rb\u00e4ttra m\u00e4tetalen. Vi kommer att diskutera om vi ska retrya eller inte, och om vi g\u00f6r det, hur. Vi identifierar flaskhalsar i arkitekturen och implementeringen av Cassandra och g\u00e5r igenom vissa ingenj\u00f6rstrick f\u00f6r att \u00f6vervinna dem. Vi kommer att ber\u00f6ra det \u00e5terkommande underh\u00e5llet och komprimeringen utan att p\u00e5verka prestandan.<\/p>\n

H\u00f6g tillg\u00e4nglighet:<\/h3>\n

\nH\u00e5rdvara \u00e4r inte evig, s\u00e5 kriser intr\u00e4ffar st\u00e4ndigt, och \u00e4ven en kollegas hand kan skaka och vi kan ta bort det vi inte beh\u00f6ver. D\u00e4rf\u00f6r diskuterar vi \u00e5terst\u00e4llning efter krascher fr\u00e5n diskar, maskiner eller datacenter, samt att \u00e5terg\u00e5 till ett konsekvent tillst\u00e5nd fr\u00e5n s\u00e4kerhetskopior vid operat\u00f6rsfel.<\/p>\n

Registrera dig<\/a><\/noindex> och ber\u00e4tta om evenemanget f\u00f6r dina v\u00e4nner och kollegor.
\n
K\u00e4lla: 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\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: Cassandra meetup | ProHoster","description":"Arbetar du med NoSQL-lagringssystemet Apache Cassandra? 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