{"id":33233,"date":"2019-10-31T21:51:27","date_gmt":"2019-10-31T18:51:27","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kak-data-tsentry-spasayut-prazdniki\/"},"modified":"2019-10-31T21:51:27","modified_gmt":"2019-10-31T18:51:27","slug":"kak-data-tsentry-spasayut-prazdniki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/kak-data-tsentry-spasayut-prazdniki","title":{"rendered":"Ako d\u00e1tov\u00e9 centr\u00e1 zachra\u0148uj\u00fa sviatky","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Ako d\u00e1tov\u00e9 centr\u00e1 zachra\u0148uj\u00fa sviatky\" src=\"\/wp-content\/uploads\/2019\/05\/d6f44ed3931a3eb8a03b1715bc0bb159.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPo\u010das roka sa Rusi pravidelne vyberaj\u00fa na pr\u00e1zdniny \u2013 novoro\u010dn\u00e9 sviatky, m\u00e1jov\u00e9 a in\u00e9 menej dlh\u00e9 vo\u013en\u00e9 dni. A to je tradi\u010dn\u00fd \u010das pre seri\u00e1lov\u00e9 marat\u00f3ny, spont\u00e1nne n\u00e1kupy a v\u00fdpredaje na Steame. V predve\u010der sviatkov retail a logistick\u00e9 spolo\u010dnosti za\u017e\u00edvaj\u00fa zv\u00fd\u0161en\u00fa z\u00e1\u0165a\u017e: \u013eudia si objedn\u00e1vaj\u00fa dar\u010deky v internetov\u00fdch obchodoch, platia za ich dopravu, kupuj\u00fa l\u00edstky na cesty a komunikuj\u00fa. Kalend\u00e1rne vrcholy dopytu s\u00fa dobr\u00fdm stresov\u00fdm testom aj pre online kin\u00e1, hern\u00e9 port\u00e1ly, video-hostingy a streamovacie hudobn\u00e9 slu\u017eby \u2013 po\u010das sviatkov v\u0161etci pracuj\u00fa \"na doraz\". <\/p>\n<p>Rozpr\u00e1vame, ako je zabezpe\u010den\u00e1 nepretr\u017eit\u00e1 dostupnos\u0165 obsahu na pr\u00edklade online kina Okko, ktor\u00e9 vo svojej \u010dinnosti spo\u010d\u00edva na v\u00fdkonoch d\u00e1tov\u00e9ho centra Linxdatacenter. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nPredt\u00fdm sa na sez\u00f3nne skoky v spotrebe kupovalo dodato\u010dn\u00e9 vybavenie na lok\u00e1lne umiestnenie, a to s \"rezervou\". Av\u0161ak, ke\u010f \"\u010cas \u010c\" nastal, \u010dasto vych\u00e1dzalo najavo, \u017ee spolo\u010dnosti bu\u010f nedok\u00e1\u017eu, alebo nemaj\u00fa \u010das na spr\u00e1vne nastavenie serverov a \u00falo\u017en\u00fdch syst\u00e9mov. Rie\u0161i\u0165 tieto \u00falohy za behu vo v\u00fdnimo\u010dn\u00fdch situ\u00e1ci\u00e1ch sa jednoducho nedalo. Po \u010dase pri\u0161lo porozumenie: vrcholy dopytu po obsahu a online slu\u017eb\u00e1ch sa skvele zvl\u00e1daj\u00fa s pomocou zdrojov tretej strany, ktor\u00e9 mo\u017eno kupova\u0165 pod\u013ea modelu pay-as-you-go \u2013 platba za skuto\u010dne spotrebovan\u00fd objem.<\/p>\n<p>Dnes takmer v\u0161etky spolo\u010dnosti, ktor\u00e9 predpokladaj\u00fa n\u00e1rast dopytu po svojich zdrojoch po\u010das sviatkov (takzvan\u00fd burst), vopred objedn\u00e1vaj\u00fa roz\u0161\u00edrenie priepustnosti komunika\u010dn\u00fdch kan\u00e1lov. Tie spolo\u010dnosti, ktor\u00e9 umiest\u0148uj\u00fa aplik\u00e1cie a datab\u00e1zy na zdrojoch d\u00e1tov\u00e9ho centra, v obdob\u00ed sviatkov zvy\u0161uj\u00fa v\u00fdpo\u010dtov\u00e9 kapacity v cloude, doobjedn\u00e1vaj\u00fa v d\u00e1tov\u00fdch centr\u00e1ch potrebn\u00e9 virtu\u00e1lne stroje, objem \u00falo\u017en\u00fdch syst\u00e9mov a pod. \u00a0<\/p>\n<h2>Ako sa nestrati\u0165 v v\u00fdpo\u010dtoch<\/h2>\n<p>\n<img decoding=\"async\" alt=\"Ako d\u00e1tov\u00e9 centr\u00e1 zachra\u0148uj\u00fa sviatky\" src=\"\/wp-content\/uploads\/2019\/05\/f394d3fa6739f14e10a31aae0bc03e79.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNa pr\u00edpravu na \u0161pi\u010dkov\u00e9 za\u0165a\u017eenia je d\u00f4le\u017eit\u00e1 koordinovan\u00e1 pr\u00e1ca poskytovate\u013ea a klienta. Hlavn\u00e9 momenty v tejto pr\u00e1ci mo\u017eno nazva\u0165 presn\u00fd odhad skoku za\u0165a\u017eenia pod\u013ea \u010dasov a objemov, d\u00f4kladn\u00e9 pl\u00e1novanie a kvalita interakcie s kolegami v r\u00e1mci d\u00e1tov\u00e9ho centra, ako aj s t\u00edmom IT \u0161pecialistov na strane poskytovate\u013ea obsahu. <\/p>\n<p>R\u00fdchle pridelenie prostriedkov potrebn\u00fdch na to, aby nov\u00e1 s\u00e9ria ob\u013e\u00faben\u00e9ho seri\u00e1lu na obrazovke va\u0161ej tablety nesekala, pom\u00e1ha cel\u00fd rad rie\u0161en\u00ed. <br \/>\n\u00a0<\/p>\n<ul>\n<li>Po prv\u00e9, s\u00fa to vyva\u017eova\u010de z\u00e1\u0165a\u017ee: s\u00fa to softv\u00e9rov\u00e9 rie\u0161enia, ktor\u00e9 starostlivo monitoruj\u00fa \u00farove\u0148 za\u0165a\u017eenia serverov, \u00falo\u017en\u00fdch syst\u00e9mov a siete, \u010d\u00edm umo\u017e\u0148uj\u00fa optimalizova\u0165 pr\u00e1cu ka\u017ed\u00e9ho syst\u00e9mu na predlo\u017een\u00fa \u00falohu. Vyva\u017eova\u010de hodnotia \u00farove\u0148 dostupnosti ako \u201ehardv\u00e9ru\u201c, tak aj <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/vps\/\"   title=\"virtu\u00e1ln\u00edch stroj\u016f\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1997\">virtu\u00e1ln\u00edch stroj\u016f<\/a>, zabra\u0148uj\u00fac poklesu v\u00fdkonu syst\u00e9mov z jednej strany a neumo\u017e\u0148uj\u00fac infra\u0161trukt\u00fare \u201eprehria\u0165 sa\u201c a spomali\u0165, z druhej. T\u00fdmto sp\u00f4sobom sa udr\u017eiava ur\u010dit\u00e1 \u00farove\u0148 rezervn\u00fdch prostriedkov, ktor\u00e9 sa m\u00f4\u017eu r\u00fdchlo presun\u00fa\u0165 na rie\u0161enie naliehav\u00fdch \u00faloh (n\u00e1hly n\u00e1rast dopytu na port\u00e1li s video obsahom, n\u00e1rast objedn\u00e1vok ur\u010dit\u00e9ho tovaru a podobne).\n<\/li>\n<li>Po druh\u00e9, CDN. T\u00e1to technol\u00f3gia umo\u017e\u0148uje pou\u017e\u00edvate\u013eom bez oneskorenia na na\u010d\u00edtanie prij\u00edma\u0165 obsah z port\u00e1lu prostredn\u00edctvom pr\u00edstupu k nemu z geografick\u00e9ho bodu najbli\u017e\u0161ieho k pou\u017e\u00edvate\u013eovi. Okrem toho, CDN eliminuje \u0161kodliv\u00e9 \u00fa\u010dinky na procesy prenosu prev\u00e1dzky, sp\u00f4soben\u00e9 pre\u0165a\u017een\u00edm kan\u00e1lov, preru\u0161en\u00edm spojenia, stratou paketov na prepojeniach kan\u00e1lov at\u010f. \n<\/li>\n<\/ul>\n<p><\/p>\n<h2>V\u0161evideci Okko<\/h2>\n<p>\n<img decoding=\"async\" alt=\"Ako d\u00e1tov\u00e9 centr\u00e1 zachra\u0148uj\u00fa sviatky\" src=\"\/wp-content\/uploads\/2019\/05\/0f6d80aa19362ba75710ef08e42eafe9.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPozrime sa na pr\u00edklad pr\u00edpravy na sviatky online kina Okko, ktor\u00e9 vyu\u017e\u00edva na\u0161e platformy v Moskve a Petrohrade. <\/p>\n<p>Pod\u013ea slov Alexeja Golubeva, technick\u00e9ho riadite\u013ea Okko, firma m\u00e1 okrem kalend\u00e1rnych sviatkov (vysok\u00e9 sez\u00f3ny) aj obdobia, kedy sa uv\u00e1dzaj\u00fa hlavn\u00e9 filmov\u00e9 novinky od majorov: <\/p>\n<blockquote><p>\u201eKa\u017ed\u00fd rok v sviato\u010dnej sez\u00f3ne Okko rastie objemom prev\u00e1dzky pribli\u017ene dvojn\u00e1sobne v porovnan\u00ed s predch\u00e1dzaj\u00facim rokom. Tak ak v minulom novoro\u010dnom obdob\u00ed bola maxim\u00e1lna \u0161pi\u010dkov\u00e1 z\u00e1\u0165a\u017e 80 Gbit\/s, v 2018\/19 sme o\u010dak\u00e1vali 160 \u2013 tradi\u010dn\u00fd rast dvakr\u00e1t. Av\u0161ak, dostali sme viac ako 200 Gbit\/s!\u201c \n<\/p><\/blockquote>\n<p>\nOkko sa v\u017edy pripravuje na \u0161pi\u010dkov\u00fa z\u00e1\u0165a\u017e pomaly, po\u010das roka, v r\u00e1mci projektu pod k\u00f3dov\u00fdm n\u00e1zvom \u201eNov\u00fd Rok\u201c. Predt\u00fdm v Okko pou\u017e\u00edvali vlastn\u00fa infra\u0161trukt\u00faru, firma m\u00e1 svoj vlastn\u00fd rozde\u013eovac\u00ed klaster pre dod\u00e1vku obsahu, na vlastnom hardv\u00e9ri a so svoj\u00edm softv\u00e9rom. Po\u010das roka technick\u00ed \u0161pecialisti Okko postupne nakupovali <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/server\/\"   title=\"nov\u00e9 servery\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"778\">nov\u00e9 servery<\/a>, zvy\u0161ovali priepustnos\u0165 svojho klastru, predpokladaj\u00fac ro\u010dn\u00fd rast dvojn\u00e1sobne. Navy\u0161e pripojovali nov\u00e9 uplinky a oper\u00e1torov \u2013 okrem ve\u013ek\u00fdch hr\u00e1\u010dov ako \u201eRostelecom\u201c, \u201eMegafon\u201c a MTS, pripojili aj traffic exchange body a najmen\u0161\u00edch oper\u00e1torov. Tento pr\u00edstup im umo\u017enil doru\u010dova\u0165 slu\u017eby maxim\u00e1lnemu po\u010dtu z\u00e1kazn\u00edkov najkrat\u0161ou trasou. <\/p>\n<p>Minul\u00fd rok, po anal\u00fdze n\u00e1kladov na vybavenie, pracovn\u00fdch n\u00e1kladov na roz\u0161\u00edrenie a ich porovnan\u00ed s n\u00e1kladmi na pou\u017e\u00edvanie extern\u00fdch CDN, si v Okku uvedomili, \u017ee nastal \u010das vysk\u00fa\u0161a\u0165 hybridn\u00fd model dod\u00e1vky. Po dvojitom raste po\u010das novoro\u010dn\u00fdch pr\u00e1zdnin nast\u00e1va pokles trafficu a febru\u00e1r je najni\u017e\u0161ou sez\u00f3nou. A tak sa ich vlastn\u00e9 vybavenie po\u010das tohto obdobia nevyu\u017e\u00edva. Do leta sa pokles vyrovn\u00e1 a pred jesennou sez\u00f3nou za\u010dne nov\u00fd rast. Preto v r\u00e1mci pr\u00edpravy na nov\u00fa sez\u00f3nu 2019 i\u0161lo Okko inou cestou: upravili svoj softv\u00e9r tak, aby mohli vyva\u017eova\u0165 z\u00e1\u0165a\u017e nielen na seba, ale aj na extern\u00e9 CDN (Content Delivery Network). Pripojili dve tieto CDN, do ktor\u00fdch \u201esmerovali\u201c prebytky trafficu. Intern\u00e1 priepustnos\u0165 IT infra\u0161trukt\u00fary Okko bola pripraven\u00e1 na dvojn\u00e1sobn\u00fd rast, ale pre pr\u00edpad, ak by do\u0161lo k pre\u0165a\u017eeniu, boli pripraven\u00e9 partnersk\u00e9 CDN. <\/p>\n<blockquote><p>\u201eRozhodnutie nepreh\u013ead\u00e1va\u0165 vlastn\u00e9 CDN u\u0161etrilo Okku zhruba 20 % rozpo\u010dtu na dod\u00e1vku v CAPEX. Navy\u0161e spolo\u010dnos\u0165 u\u0161etrila nieko\u013eko \u010dlovekomesiacov, ke\u010f preniesla pr\u00e1cu na nastavenie vybavenia na plecia partnera.\u201c \u2013 komentuje Alexej Golubev.<\/p><\/blockquote>\n<p>\nDistribu\u010dn\u00fd klaster (intern\u00e9 CDN) v Okku je realizovan\u00fd na dvoch lokalit\u00e1ch Linxdatacenter v Moskve a v Petrohrade. Je zabezpe\u010den\u00e9 \u00fapln\u00e9 zrkadlenie obsahu aj jeho cache (distribu\u010dn\u00e9 uzly). Prisl\u00fachaj\u00faci moskovsk\u00fd d\u00e1tov\u00fd centr\u00e1 sprac\u00fava Moskvu a niektor\u00e9 oblasti Ruska, zatia\u013e \u010do petrohradsk\u00fd spracov\u00e1va Severoz\u00e1pad a zvy\u0161ok \u00fazemia krajiny. Vyva\u017eovanie sa deje nielen na z\u00e1klade regi\u00f3nu, ale aj v z\u00e1vislosti od za\u0165a\u017eenia uzlov v konkr\u00e9tnom d\u00e1tovom centre, pri\u010dom sa zoh\u013ead\u0148uje pr\u00edtomnos\u0165 filmu v cache a mno\u017estvo \u010fal\u0161\u00edch faktorov. <\/p>\n<p>Zjednodu\u0161en\u00e1 architekt\u00fara slu\u017eby vyzer\u00e1 na sch\u00e9me takto:<\/p>\n<p><img decoding=\"async\" alt=\"Ako d\u00e1tov\u00e9 centr\u00e1 zachra\u0148uj\u00fa sviatky\" src=\"\/wp-content\/uploads\/2019\/05\/8feae02d3d7062cc5d0445d2dcc6fe8f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nFyzick\u00e1 slu\u017eba a podpora v\u00fdvoja produktu sa sklad\u00e1 z pribli\u017ene desiatich stojanov v Petrohrade a nieko\u013ek\u00fdch stojanov v Moskve. M\u00e1me p\u00e1r desiatok serverov na virtualiz\u00e1ciu a takmer dvesto \"hardv\u00e9rov\u00fdch\" serverov na v\u0161etko ostatn\u00e9 - distrib\u00faciu, podporu slu\u017eieb a vlastn\u00fa infra\u0161trukt\u00faru kancel\u00e1rie. Interakcia poskytovate\u013ea obsahu s d\u00e1tov\u00fdm centrom po\u010das \u0161pi\u010dkov\u00fdch za\u0165a\u017een\u00ed sa nijako nel\u00ed\u0161i od aktu\u00e1lnej pr\u00e1ce. V\u0161etka komunik\u00e1cia je obmedzen\u00e1 na \u017eiadosti do z\u00e1kazn\u00edckej podpory, a v pr\u00edpade mimoriadnej situ\u00e1cie - telefonicky. <\/p>\n<p>Dnes sme, ako nikdy predt\u00fdm, bl\u00edzko k skuto\u010dn\u00e9mu, na 100% bezprobl\u00e9mov\u00e9mu scen\u00e1ru spotreby obsahu online, preto\u017ee v\u0161etky potrebn\u00e9 technol\u00f3gie s\u00fa u\u017e dostupn\u00e9. Rozvoj online streamovania prebieha ve\u013emi r\u00fdchlo. Rastieme popularity leg\u00e1lnych modelov spotreby obsahu: rusk\u00ed pou\u017e\u00edvatelia si postupne zvykaj\u00fa na to, \u017ee je potrebn\u00e9 plati\u0165 za obsah. A to nielen za filmy, ale aj za hudbu, knihy a vzdel\u00e1vacie materi\u00e1ly v sieti. A vzh\u013eadom na to je dod\u00e1vka najr\u00f4znej\u0161ieho obsahu a s najni\u017e\u0161\u00edmi sie\u0165ov\u00fdmi oneskoreniami - najd\u00f4le\u017eitej\u0161\u00edm krit\u00e9riom v pr\u00e1ci online slu\u017eieb. A na\u0161ou \u00falohou ako poskytovate\u013ea slu\u017eieb je zabezpe\u010di\u0165 po\u017eiadavky na zdroje na\u010das a s rezervou.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/linxdatacenter\/blog\/450928\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0442\u0435\u0447\u0435\u043d\u0438\u0435 \u0433\u043e\u0434\u0430 \u0440\u043e\u0441\u0441\u0438\u044f\u043d\u0435 \u0440\u0435\u0433\u0443\u043b\u044f\u0440\u043d\u043e \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043d\u0430 \u043f\u0440\u0430\u0437\u0434\u043d\u0438\u043a\u0438 \u2013 \u043d\u043e\u0432\u043e\u0433\u043e\u0434\u043d\u0438\u0435 \u043a\u0430\u043d\u0438\u043a\u0443\u043b\u044b, \u043c\u0430\u0439\u0441\u043a\u0438\u0435 \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u043c\u0435\u043d\u0435\u0435 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