{"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\/ro\/blog\/administrirovanie\/ok-tech-cassandra-meetup","title":{"rendered":"ok.tech: \u00eent\u00e2lnire Cassandra","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

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

Lucra\u021bi cu stocarea NoSQL Apache Cassandra?<\/h2>\n

\nPe 23 mai, Odnoklassniki invit\u0103 dezvoltatori experimenta\u021bi \u00een biroul s\u0103u din Petersburg la un meetup<\/a><\/noindex>, dedicat lucrului cu Apache Cassandra. Experien\u021ba dumneavoastr\u0103 cu Cassandra \u0219i dorin\u021ba de a o \u00eemp\u0103rt\u0103\u0219i sunt cele mai importante.
\n\u00censcrie\u021bi-v\u0103 la eveniment<\/a><\/noindex>
\n<\/a><\/noindex>
\nNoi, \u00een OK am \u00eenceput s\u0103 folosim<\/a><\/noindex> Apache Cassandra \u00een 2010 pentru a stoca evalu\u0103rile fotografiilor. \u00cen prezent, suntem cei mai mari utilizatori de Apache Cassandra din Runet \u0219i printre cei mai mari din Europa. Avem peste o sut\u0103 de clustere diferite folosite at\u00e2t pentru stocarea diverselor informa\u021bii despre produse - clase, chat-uri, mesaje, c\u00e2t \u0219i pentru gestionarea datelor critice de infrastructur\u0103 - maparea blocurilor logice pe discuri dintr-un mare stocare binar\u0103 - one-cold-storage<\/a><\/noindex>, gestionarea datelor din cloud-ul intern one-cloud<\/a><\/noindex> etc.<\/p>\n

\u00cen total, \u00een Odnoklassniki<\/a><\/noindex> sub gestionarea Cassandra se afl\u0103 petabyte de date pe mii de noduri. De-a lungul timpului, am acumulat o experien\u021b\u0103 vast\u0103 \u00een administrarea, dezvoltarea \u0219i exploatarea solu\u021biilor bazate pe Cassandra \u0219i chiar am dezvoltat propria noastr\u0103 baz\u0103 de date tranzac\u021bional\u0103 NewSQL<\/a><\/noindex>.<\/p>\n

Acum dorim s\u0103 \u00eemp\u0103rt\u0103\u0219im totul cu voi - pe cazuri reale din practic\u0103 \u0219i f\u0103r\u0103 secrete; Evenimentul va avea loc sub forma unei discu\u021bii deschise \u00eentre participan\u021bi, ceea ce \u00eenseamn\u0103 c\u0103 discu\u021biile vor ocupa cea mai mare parte a timpului. Exper\u021bii OK<\/a><\/noindex> sunt preg\u0103ti\u021bi s\u0103 \u00eemp\u0103rt\u0103\u0219easc\u0103 ideile \u0219i abord\u0103rile lor. Evenimentul va fi condus de Oleg Anastasiev<\/a><\/noindex> \u0219i Alexander Hristoforov<\/a><\/noindex>.<\/p>\n

Ce subiecte vor fi?<\/h2>\n

<\/p>\n

Exploatare:<\/h3>\n

\nVom analiza configura\u021biile tipice ale nodurilor \u0219i clusterelor \u00een diverse instala\u021bii de produc\u021bie. Vom discuta despre cum s\u0103 extindem clusterele pe m\u0103sur\u0103 ce volumul de date \u0219i sarcina cresc \u0219i cum s\u0103 \u00eenlocuim nodurile defecte cu un impact minim asupra clien\u021bilor. Vom \u00eemp\u0103rt\u0103\u0219i dificult\u0103\u021bile \u0219i vom sistematiza capcanele populare. Vom afla cum s\u0103 monitoriz\u0103m clusterele pentru a \u00een\u021belege anticipat unde \u0219i ce anume nu func\u021bioneaz\u0103 corect. Vom aborda problemele legate de implementarea noilor versiuni de Cassandra.<\/p>\n

Performan\u021b\u0103:<\/h3>\n

\nVom \u00eencerca s\u0103 \u00een\u021belegem pe ce metrici s\u0103 ne concentr\u0103m \u0219i ce poate fi optimizat pentru a \u00eembun\u0103t\u0103\u021bi aceste metrici. Vom analiza dac\u0103 s\u0103 facem retry sau nu \u0219i, dac\u0103 da, cum s\u0103 proced\u0103m. Vom identifica punctele nevralgice \u00een arhitectura \u0219i implementarea Cassandra \u0219i vom examina diverse trucuri inginerie pentru a le evita. Vom aborda problema repar\u0103rii regulate \u0219i compac\u021biei f\u0103r\u0103 degradarea performan\u021bei.<\/p>\n

Rezisten\u021b\u0103 la defec\u021biuni:<\/h3>\n

\nHardware is not eternal, which is why failures happen constantly, and even a colleague's hand might slip, causing us to delete something unnecessary. Therefore, let's discuss recovery after disk, machine, or data center failures, as well as rolling back to a consistent state from backups in case of operator errors.<\/p>\n

\u00cenregistra\u021bi-v\u0103<\/a><\/noindex> and tell your friends and colleagues about the event.
\n
Sursa: 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: Cassandra meetup | ProHoster","description":"Are you working with the NoSQL storage Apache Cassandra? 23.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/ok-tech-cassandra-meetup","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47ok.tech: Cassandra meetup | ProHoster","og:description":"\u0420\u0430\u0431\u043e\u0442\u0430\u0435\u0442\u0435 \u0441 NoSQL-\u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435\u043c Apache Cassandra? 23.","og:url":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/ok-tech-cassandra-meetup","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:46:51+00:00","article:modified_time":"2019-10-31T18:46:51+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"32402","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 10:40:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 02:59:29","updated":"2026-01-21 10:40:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/32402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=32402"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/32402\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media\/24215"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=32402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=32402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=32402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}