{"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\/sl\/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

Delate z NoSQL skladi\u0161\u010dem Apache Cassandra?<\/h2>\n

\n23. maja Odnoklassniki vabijo izku\u0161ene razvijalce v svoj urad v Sankt Peterburgu na meetup<\/a><\/noindex>, posve\u010den delu z Apache Cassandra. Pomembna sta le va\u0161e izku\u0161nje z uporabo Cassandre in \u017eelja po njihovem deljenju.
\nRegistrirajte se za dogodek<\/a><\/noindex>
\n<\/a><\/noindex>
\nMi v OK smo za\u010deli uporabljati<\/a><\/noindex> Apache Cassandra leta 2010 za shranjevanje ocen fotografij. Sedaj smo najve\u010dji uporabniki Apache Cassandra v Runetu in med najve\u010djimi v Evropi. Imamo ve\u010d kot sto razli\u010dnih grozdov, ki se uporabljajo tako za shranjevanje razli\u010dnih informacij o izdelkih - razredi, klepeti, sporo\u010dila, kot tudi za upravljanje kriti\u010dnih infrastrukturnih podatkov - usklajevanje logi\u010dnih blokov na diske velikega binarnega shranjevanja - one-cold-storage<\/a><\/noindex>, upravljanje podatkov notranjega oblaka one-cloud<\/a><\/noindex> itd.<\/p>\n

Skupaj je pod nadzorom Cassandre petabajtov podatkov na tiso\u010dih vozli\u0161\u010d. V tem \u010dasu smo nabrali ogromno izku\u0161enj pri upravljanju, razvoju in delovanju re\u0161itev na osnovi Cassandre in celo razvili svojo Odnoklassniki<\/a><\/noindex> lastno NewSQL transakcijsko DB Zdaj bi se radi delili z vami - na resni\u010dnih primerih iz prakse in brez skrivnosti; Dogodek bo potekal v obliki \u017eive razprave med udele\u017eenci, kar pomeni, da bo razprava predstavljala glavni del \u010dasa.<\/a><\/noindex>.<\/p>\n

Strokovnjaki OK so pripravljeni deliti svoje ideje in pristope. Dogodek bosta vodila<\/a><\/noindex> Oleg Anastasyev Aleksander Hristoforov<\/a><\/noindex> in Kak\u0161ne bodo teme?<\/a><\/noindex>.<\/p>\n

Obratovanje:<\/h2>\n

<\/p>\n

Preu\u010dili bomo tipi\u010dne konfiguracije vozli\u0161\u010d in grozdov v razli\u010dnih produkcijskih in\u0161talacijah. Razpravljali bomo o tem, kako raz\u0161iriti grozde s pove\u010danjem obsega podatkov in obremenitve ter kako zamenjati odpovedana vozli\u0161\u010da z minimalnim vplivom na stranke. Delili bomo bole\u010dine in sistematizirali priljubljene pasti. Ugotovili bomo, kako spremljati grozde, da bi vnaprej vedeli, kje in kaj natan\u010dno ne deluje. Dotaknili se bomo te\u017eav pri name\u0161\u010danju novih razli\u010dic Cassandre.<\/h3>\n

\nU\u010dinkovitost:<\/p>\n

Poskusili bomo razumeti, katere metrike spremljati in kaj lahko optimiziramo, da bi izbolj\u0161ali metrike. Razjasnili bomo, ali naj se ponavljajo, in \u010de da, kako. Identificirali bomo ozka mesta v arhitekturi in implementaciji Cassandre ter preu\u010dili nekatere in\u017eenirske trike, da jih obidemo. Dotaknili se bomo pere\u010dega rednega popravila in kompresije brez degradacije zmogljivosti.<\/h3>\n

\nOdpornost:<\/p>\n

Odpornost na napake:<\/h3>\n

\n\u017delezo ni ve\u010dno, zato se okvare pojavljajo nenehno, pa tudi roka kolega se lahko zatakne in odstranimo odve\u010dno, zato se bomo pogovarjali o obnovi po napakah diskov, strojev ali podatkovnih centrov, ter o povratku v dosledno stanje iz varnostnih kopij v primeru uporabni\u0161kih napak.<\/p>\n

Registrirajte se<\/a><\/noindex> in delite informacije o dogodku s svojimi prijatelji in sodelavci.
\n
Izvor: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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