{"id":34083,"date":"2019-10-31T21:56:19","date_gmt":"2019-10-31T18:56:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kto-takie-data-inzhenery-i-kak-imi-stanovyatsya\/"},"modified":"2019-10-31T21:56:19","modified_gmt":"2019-10-31T18:56:19","slug":"kto-takie-data-inzhenery-i-kak-imi-stanovyatsya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/kto-takie-data-inzhenery-i-kak-imi-stanovyatsya","title":{"rendered":"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ahoj znova! N\u00e1zov \u010dl\u00e1nku hovor\u00ed s\u00e1m za seba. V predve\u010der \u0161tartu kurzu <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/a4Uj\/\">\u201eData Engineer\u201c<\/a><\/noindex> navrhujeme sa zamyslie\u0165 nad t\u00fdm, kto s\u00fa to d\u00e1tov\u00ed in\u017einieri. V \u010dl\u00e1nku je ve\u013ea u\u017eito\u010dn\u00fdch odkazov. Pr\u00edjemn\u00e9 \u010d\u00edtanie.<\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/5f831df35ab1292adafca20f937ed22d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<i>Jednoduch\u00fd sprievodca o tom, ako uchopi\u0165 vlnu d\u00e1tov\u00e9ho in\u017einierstva a nenecha\u0165 sa vtiahnu\u0165 do hlb\u00edn.<\/i><\/p>\n<p>M\u00f4\u017ee sa zda\u0165, \u017ee v s\u00fa\u010dasnosti chce ka\u017ed\u00fd by\u0165 d\u00e1tov\u00fdm vedcom (Data Scientist). Ale \u010do d\u00e1tov\u00e9 in\u017einierstvo? <i>V podstate ide o ak\u00fdsi hybrid d\u00e1tov\u00e9ho analytika a d\u00e1tov\u00e9ho vedca; d\u00e1tov\u00fd in\u017einier zvy\u010dajne zodpoved\u00e1 za spr\u00e1vu pracovn\u00fdch tokov, spracovate\u013esk\u00fdch kan\u00e1lov a ETL procesov.<\/i>Vzh\u013eadom na d\u00f4le\u017eitos\u0165 t\u00fdchto funkci\u00ed, ide teraz o \u010fal\u0161\u00ed popul\u00e1rny profesion\u00e1lny \u017earg\u00f3n, ktor\u00fd r\u00fdchlo naber\u00e1 na popularite.<\/p>\n<p>Vysok\u00fd plat a obrovsk\u00fd dopyt \u2014 to je len mal\u00e1 \u010das\u0165 toho, \u010do rob\u00ed t\u00fato pr\u00e1cu nesmierne atrakt\u00edvnou! Ak chcete pribudn\u00fa\u0165 do radov hrdinov, nikdy nie je neskoro za\u010da\u0165 sa u\u010di\u0165. V tomto pr\u00edspevku som zhroma\u017edil v\u0161etky potrebn\u00e9 inform\u00e1cie, aby som v\u00e1m pomohol urobi\u0165 prv\u00e9 kroky.<\/p>\n<p>Tak teda, za\u010dnime!<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><b>\u010co je d\u00e1tov\u00e9 in\u017einierstvo?<\/b><\/p>\n<p>\u00daprimne povedan\u00e9, niet lep\u0161ieho vysvetlenia, ne\u017e toto:<\/p>\n<blockquote><p><i>\u201eVedec m\u00f4\u017ee objavi\u0165 nov\u00fa hviezdu, ale nem\u00f4\u017ee ju vytvori\u0165. Bude musie\u0165 po\u017eiada\u0165 in\u017einiera, aby to urobil za neho.\u201c<\/i><\/p>\n<p>\u2013 Gordon Lindsay Glegg<\/p><\/blockquote>\n<p>Tak\u017ee \u00faloha d\u00e1tov\u00e9ho in\u017einiera je dos\u0165 v\u00fdznamn\u00e1.<\/p>\n<p>Z n\u00e1zvu to nazna\u010duje, in\u017einierstvo d\u00e1t s\u00favis\u00ed s \u00fadajmi, konkr\u00e9tne s ich dod\u00e1van\u00edm, uskladnen\u00edm a spracovan\u00edm. Zodpovedaj\u00facou \u00falohou in\u017einierov je zabezpe\u010di\u0165 spo\u013eahliv\u00fa infra\u0161trukt\u00faru pre \u00fadaje. Ak sa pozrieme na hierarchiu potrieb v oblasti AI, in\u017einierstvo d\u00e1t pokr\u00fdva prv\u00e9 2\u20133 \u00farovne: <b>zber, presun a uskladnenie, \u00fapravu \u00fadajov<\/b>.<\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/377481f2f52a4ed771508a450678afd0.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>\u010co rob\u00ed d\u00e1tov\u00fd in\u017einier?<\/b><\/p>\n<p>S pr\u00edchodom big data sa oblas\u0165 zodpovednosti dramaticky zmenila. K\u00fdm predt\u00fdm t\u00edto odborn\u00edci p\u00edsali ve\u013ek\u00e9 SQL dotazy a prev\u00e1dzali \u00fadaje pomocou n\u00e1strojov ako Informatica ETL, Pentaho ETL, Talend, dnes s\u00fa po\u017eiadavky na d\u00e1tov\u00fdch in\u017einierov zv\u00fd\u0161en\u00e9.<\/p>\n<p>V\u00e4\u010d\u0161ina spolo\u010dnost\u00ed, ktor\u00e9 maj\u00fa otvoren\u00e9 pracovn\u00e9 poz\u00edcie pre d\u00e1tov\u00e9ho in\u017einiera, vy\u017eaduje nasleduj\u00face:<\/p>\n<ul>\n<li>V\u00fdborn\u00e9 znalosti SQL a Python.<\/li>\n<li>Sk\u00fasenosti s cloudov\u00fdmi platformami, konkr\u00e9tne Amazon Web Services.<\/li>\n<li>Uprednost\u0148uje sa znalos\u0165 Java\/Scala.<\/li>\n<li>Dobr\u00fd preh\u013ead o datab\u00e1zach SQL a NoSQL (modelovanie \u00fadajov, uskladnenie \u00fadajov).<\/li>\n<\/ul>\n<p>Majte na pam\u00e4ti, \u017ee ide len o to najd\u00f4le\u017eitej\u0161ie. Z tohto zoznamu mo\u017eno predpoklada\u0165, \u017ee d\u00e1tov\u00ed in\u017einieri s\u00fa odborn\u00edci v oblasti softv\u00e9rov\u00e9ho v\u00fdvoja a backendu.<br \/>\nNapr\u00edklad, ak spolo\u010dnos\u0165 za\u010dne generova\u0165 ve\u013ek\u00e9 mno\u017estvo \u00fadajov z r\u00f4znych zdrojov, va\u0161ou \u00falohou ako d\u00e1tov\u00e9ho in\u017einiera je organizova\u0165 zber inform\u00e1ci\u00ed, ich spracovanie a uchov\u00e1vanie.<\/p>\n<p>Zoznam n\u00e1strojov pou\u017e\u00edvan\u00fdch v tomto pr\u00edpade sa m\u00f4\u017ee l\u00ed\u0161i\u0165, v\u0161etko z\u00e1vis\u00ed od objemu t\u00fdchto \u00fadajov, r\u00fdchlosti ich pr\u00edchodu a heterogenity. V\u00e4\u010d\u0161ina spolo\u010dnost\u00ed sa v\u00f4bec nestret\u00e1va s ve\u013ek\u00fdmi d\u00e1tami, a preto ako centralizovan\u00e9 \u00falo\u017eisko, takzvan\u00e9 \u00falo\u017eisko \u00fadajov, mo\u017eno pou\u017ei\u0165 datab\u00e1zu SQL (PostgreSQL, MySQL a pod.) s mal\u00fdm mno\u017estvom skriptov, ktor\u00e9 smeruj\u00fa \u00fadaje do \u00falo\u017eiska.<\/p>\n<p>IT giganti, ako Google, Amazon, Facebook alebo Dropbox, maj\u00fa vy\u0161\u0161ie po\u017eiadavky: znalos\u0165 Pythonu, Javy alebo Scaly.<\/p>\n<ul>\n<li>Sk\u00fasenosti s ve\u013ek\u00fdmi d\u00e1tami: Hadoop, Spark, Kafka.<\/li>\n<li>Znalosti algoritmov a d\u00e1tov\u00fdch \u0161trukt\u00far.<\/li>\n<li>Pochopenie z\u00e1kladov distribuovan\u00fdch syst\u00e9mov.<\/li>\n<li>Sk\u00fasenosti s n\u00e1strojmi na vizualiz\u00e1ciu d\u00e1t, ako s\u00fa Tableau alebo ElasticSearch, bud\u00fa ve\u013ek\u00fdm pr\u00ednosom.<\/li>\n<\/ul>\n<p>In\u00fdmi slovami, pozoruje sa jasn\u00fd posun smerom k ve\u013ek\u00fdm d\u00e1tam, konkr\u00e9tne v ich spracovan\u00ed pri vysok\u00fdch za\u0165a\u017eeniach. Tieto spolo\u010dnosti maj\u00fa zv\u00fd\u0161en\u00e9 po\u017eiadavky na odolnos\u0165 syst\u00e9mu.<\/p>\n<p><b>D\u00e1tov\u00ed in\u017einieri Vs. d\u00e1tov\u00ed vedci<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/f01dd66863fcc0a89ab0b763d208a863.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Dobre, to bolo jednoduch\u00e9 a z\u00e1bavn\u00e9 porovnanie (ni\u010d osobn\u00e9), ale v skuto\u010dnosti je to ove\u013ea zlo\u017eitej\u0161ie.<\/i><\/p>\n<p>Po prv\u00e9, mus\u00edte vedie\u0165, \u017ee existuje dos\u0165 ve\u013ea nejasnost\u00ed v rozde\u013eovan\u00ed rol\u00ed a zru\u010dnost\u00ed d\u00e1tov\u00e9ho vedca a d\u00e1tov\u00e9ho in\u017einiera. To znamen\u00e1, \u017ee sa \u013eahko m\u00f4\u017eete c\u00edti\u0165 zm\u00e4ten\u00fd t\u00fdm, ak\u00e9 zru\u010dnosti s\u00fa naozaj potrebn\u00e9 pre \u00faspe\u0161n\u00e9ho d\u00e1tov\u00e9ho in\u017einiera. Samozrejme, existuj\u00fa ur\u010dit\u00e9 zru\u010dnosti, ktor\u00e9 sa prekr\u00fdvaj\u00fa s oboma rolami. Ale taktie\u017e existuje cel\u00e1 rada diametr\u00e1lne opa\u010dn\u00fdch zru\u010dnost\u00ed.<\/p>\n<p>D\u00e1tov\u00e1 veda je seri\u00f3zna z\u00e1le\u017eitos\u0165, ale smerujeme do sveta funk\u010dnej d\u00e1tovej vedy, kde praktikanti s\u00fa schopn\u00ed robi\u0165 svoju vlastn\u00fa analytiku. Aby ste mohli zapoji\u0165 d\u00e1tov\u00e9 kan\u00e1ly a integrovan\u00e9 \u0161trukt\u00fary d\u00e1t, potrebujete d\u00e1tov\u00fdch in\u017einierov, nie vedcov.<\/p>\n<p><b>Je d\u00e1tov\u00fd in\u017einier viac \u017eiadan\u00fd ako d\u00e1tov\u00fd vedec?<\/b><\/p>\n<blockquote><p><i> \u2014 \u00c1no, preto\u017ee sk\u00f4r ako si m\u00f4\u017eete pripravi\u0165 mrkvov\u00fd kol\u00e1\u010d, mus\u00edte najprv nazbiera\u0165, o\u010disti\u0165 a z\u00e1sobi\u0165 mrkvu!<\/i><\/p><\/blockquote>\n<p>D\u00e1tov\u00fd in\u017einier sa rozumie programovaniu lep\u0161ie ako ak\u00fdko\u013evek d\u00e1tov\u00fd vedec, ale pokia\u013e ide o \u0161tatistiku, v\u0161etko je presne naopak.<\/p>\n<p>Ale to je v\u00fdhoda d\u00e1tov\u00e9ho in\u017einiera:<\/p>\n<p>bez neho\/nej hodnota modelu prototypu, ktor\u00fd sa \u010dasto sklad\u00e1 z \u00fatr\u017eku zl\u00e9ho k\u00f3du v s\u00fabore Python, z\u00edskan\u00e9ho od d\u00e1tov\u00e9ho vedca a ak\u00fdmko\u013evek sp\u00f4sobom d\u00e1vaj\u00faceho v\u00fdsledok, sa bl\u00ed\u017ei nule.<\/p>\n<p>Bez d\u00e1tov\u00e9ho in\u017einiera sa tento k\u00f3d nikdy nestane projektom a \u017eiadny obchodn\u00fd probl\u00e9m nebude efekt\u00edvne vyrie\u0161en\u00fd. D\u00e1tov\u00fd in\u017einier sa sna\u017e\u00ed zmeni\u0165 to v\u0161etko na produkt.<\/p>\n<p><b>Z\u00e1kladn\u00e9 vedomosti, ktor\u00e9 by mal d\u00e1tov\u00fd in\u017einier ma\u0165<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/f724004e5a30a0c021c4377d66985d16.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTak\u017ee, ak v\u00e1s t\u00e1to pr\u00e1ca vzru\u0161uje a ste pln\u00ed nad\u0161enia \u2014 ste schopn\u00ed sa to nau\u010di\u0165, m\u00f4\u017eete ovl\u00e1dnu\u0165 v\u0161etky potrebn\u00e9 zru\u010dnosti a sta\u0165 sa naozaj rockovou hviezdou v oblasti d\u00e1tov\u00e9ho v\u00fdvoja. A \u00e1no, m\u00f4\u017eete to dosiahnu\u0165 aj bez programovac\u00edch zru\u010dnost\u00ed alebo ak\u00fdchko\u013evek in\u00fdch technick\u00fdch vedomost\u00ed. Je to n\u00e1ro\u010dn\u00e9, ale mo\u017en\u00e9!<\/p>\n<p><b>Ak\u00e9 s\u00fa prv\u00e9 kroky?<\/b><\/p>\n<blockquote><p><i>Mus\u00edte ma\u0165 z\u00e1kladn\u00fa predstavu o tom, \u010do je \u010do.<\/i><\/p><\/blockquote>\n<p>Predov\u0161etk\u00fdm d\u00e1tov\u00e9 in\u017einierstvo s\u00favis\u00ed s informatikou. Konkr\u00e9tne \u2014 mali by ste rozumie\u0165 efekt\u00edvnym algoritmom a \u0161trukt\u00faram \u00fadajov. Po druh\u00e9, ke\u010f\u017ee d\u00e1tov\u00ed in\u017einieri pracuj\u00fa s \u00fadajmi, je potrebn\u00e9 porozumie\u0165 z\u00e1sad\u00e1m fungovania datab\u00e1z a \u0161trukt\u00faram, na ktor\u00fdch s\u00fa zalo\u017een\u00e9.<\/p>\n<p>Napr\u00edklad be\u017en\u00e9 B-tree SQL datab\u00e1zy s\u00fa zalo\u017een\u00e9 na \u0161trukt\u00fare \u00fadajov B-Tree, a taktie\u017e v modern\u00fdch distribuovan\u00fdch repozit\u00e1roch, LSM-Tree a in\u00fdch modifik\u00e1ci\u00e1ch hash tabuliek.<\/p>\n<p><i>* Tieto kroky s\u00fa zalo\u017een\u00e9 na \u00fa\u017easnom \u010dl\u00e1nku <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/@adil_45422\">Adila Hashtanova<\/a><\/noindex>. Tak\u017ee, ak ovl\u00e1date ru\u0161tinu, podporte tohto autora a pre\u010d\u00edtajte si <noindex><a rel=\"nofollow\" href=\"https:\/\/khashtamov.com\/ru\/data-engineer\/\">jeho pr\u00edspevok<\/a><\/noindex>.<\/i><\/p>\n<p><b>1. Algoritmy a \u0161trukt\u00fary \u00fadajov<\/b><\/p>\n<p>Pou\u017eitie spr\u00e1vnej \u0161trukt\u00fary \u00fadajov m\u00f4\u017ee v\u00fdrazne zlep\u0161i\u0165 v\u00fdkon algoritmu. Ide\u00e1lne by sme sa v\u0161etci mali u\u010di\u0165 \u0161trukt\u00fary \u00fadajov a algoritmy v na\u0161ich \u0161kol\u00e1ch, ale to sa zriedka pokr\u00fdva. V ka\u017edom pr\u00edpade, nikdy nie je neskoro obozn\u00e1mi\u0165 sa.<br \/>\nTak\u017ee, tu s\u00fa moje ob\u013e\u00faben\u00e9 bezplatn\u00e9 kurzy na \u0161t\u00fadium \u0161trukt\u00far \u00fadajov a algoritmov:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.udemy.com\/introduction-to-data-structures\/?ranMID=39197&amp;ranEAID=JVFxdTr9V80&amp;ranSiteID=JVFxdTr9V80-fcVI3mDcwPC4Q5dpzDABSg&amp;LSNPUBID=JVFxdTr9V80\">Od jednoduch\u00fdch po zlo\u017eit\u00e9: \u0160trukt\u00fary \u00fadajov (Udemy)<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.coursera.org\/learn\/algorithms-part1?ranMID=40328&amp;ranEAID=JVFxdTr9V80&amp;ranSiteID=JVFxdTr9V80-Y2SOzvEQ5UCqGZ8SQ8yPFA&amp;siteID=JVFxdTr9V80-Y2SOzvEQ5UCqGZ8SQ8yPFA&amp;utm_content=10&amp;utm_medium=partners&amp;utm_source=linkshare&amp;utm_campaign=JVFxdTr9V80\">Algoritmy, \u010das\u0165 I (Coursera)<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.coursera.org\/learn\/algorithms-part2?ranMID=40328&amp;ranEAID=JVFxdTr9V80&amp;ranSiteID=JVFxdTr9V80-sXWvgPKRyzYEBJ33lVooUQ&amp;siteID=JVFxdTr9V80-sXWvgPKRyzYEBJ33lVooUQ&amp;utm_content=10&amp;utm_medium=partners&amp;utm_source=linkshare&amp;utm_campaign=JVFxdTr9V80\">Algoritmy, \u010das\u0165 II (Coursera)<\/a><\/noindex>\n <\/li>\n<\/ul>\n<p>Navy\u0161e nezab\u00fadajte na klasick\u00fa pr\u00e1cu na algoritmoch Thomasa Cormena \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/0262033844\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=0262033844&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=74742875db503b1a899ca35159749067\">\u00davod do algoritmov<\/a><\/noindex>. Je to ide\u00e1lny sprievodca, ke\u010f potrebujete osvie\u017ei\u0165 svoju pam\u00e4\u0165.<\/p>\n<ul>\n<li>Aby ste zlep\u0161ili svoje zru\u010dnosti, vyu\u017eite <noindex><a rel=\"nofollow\" href=\"https:\/\/leetcode.com\/problemset\/algorithms\/\">Leetcode<\/a><\/noindex>.<\/li>\n<\/ul>\n<p>M\u00f4\u017eete sa tie\u017e ponori\u0165 do sveta datab\u00e1z skvel\u00fdmi videami z Carnegie Mellon University na YouTube:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/playlist?list=PLSE8ODhjZXjYutVzTeAds8xUt1rcmyT7x\">\u00davod do datab\u00e1zov\u00fdch syst\u00e9mov<\/a><\/noindex>.<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/playlist?list=PLSE8ODhjZXja7K1hjZ01UTVDnGQdx5v5U\">Pokro\u010dil\u00e9 datab\u00e1zov\u00e9 syst\u00e9my<\/a><\/noindex>.<\/li>\n<\/ul>\n<p><b>2. \u0160t\u00fadium SQL<\/b><\/p>\n<p>Cel\u00fd n\u00e1\u0161 \u017eivot s\u00fa d\u00e1ta. Aby ste tieto d\u00e1ta vytiahli z datab\u00e1zy, mus\u00edte s nimi 'rozpr\u00e1va\u0165' v jednom jazyku.<\/p>\n<p>SQL (Structured Query Language \u2014 jazyk \u0161trukt\u00farovan\u00fdch dotazov) je jazykom komunik\u00e1cie v oblasti d\u00e1t. Bez oh\u013eadu na to, \u010do niekto hovor\u00ed, SQL \u017eil, \u017eije a e\u0161te dlho \u017ei\u0165 bude.<\/p>\n<p>Ak u\u017e dlh\u0161\u00ed \u010das pracujete v oblasti v\u00fdvoja, pravdepodobne ste si v\u0161imli, \u017ee spr\u00e1vy o bl\u00edzkej smrti SQL sa objavuj\u00fa ob\u010das. Jazyk bol vyvinut\u00fd na za\u010diatku 70-tych rokov a st\u00e1le je ve\u013emi popul\u00e1rny medzi analytikmi, v\u00fdvoj\u00e1rmi a jednoducho nad\u0161encami.<br \/>\nBez znalosti SQL v d\u00e1tovom in\u017einierstve sa ned\u00e1 ni\u010d robi\u0165, preto\u017ee nevyhnutne budete musie\u0165 vytv\u00e1ra\u0165 dotazy na z\u00edskavanie d\u00e1t. V\u0161etky modern\u00e9 \u00falo\u017eisk\u00e1 ve\u013ek\u00fdch d\u00e1t podporuj\u00fa SQL:<\/p>\n<ul>\n<li>Amazon Redshift<\/li>\n<li>HP Vertica<\/li>\n<li>Oracle<\/li>\n<li>SQL Server<\/li>\n<\/ul>\n<p>\u2026 a mnoh\u00e9 \u010fal\u0161ie.<\/p>\n<p>Na anal\u00fdzu ve\u013ek\u00fdch objemov d\u00e1t ulo\u017een\u00fdch v distribuovan\u00fdch syst\u00e9moch, ako je HDFS, boli vyn\u00e1jden\u00e9 mechanizmy SQL: Apache Hive, Impala a pod. Vid\u00edte, on nikam nezmizne.<\/p>\n<p>Ako sa nau\u010di\u0165 SQL? Jednoducho sa s t\u00fdm praktikujte.<\/p>\n<p>Na to by som odporu\u010dil obozn\u00e1mi\u0165 sa s v\u00fdborn\u00fdm u\u010debn\u00fdm materi\u00e1lom, ktor\u00fd je, mimochodom, zadarmo, od <noindex><a rel=\"nofollow\" href=\"https:\/\/mode.com\/sql-tutorial\/introduction-to-sql\/\">Mode Analytics<\/a><\/noindex>.<\/p>\n<ol>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.datacamp.com\/courses\/intermediate-sql\/\">Stredne pokro\u010dil\u00e9 SQL<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.datacamp.com\/courses\/joining-data-in-postgresql\">Zlu\u010dovanie d\u00e1t v SQL<\/a><\/noindex><\/li>\n<\/ol>\n<p>Charakteristickou \u010drtou t\u00fdchto kurzov je pr\u00edtomnos\u0165 interakt\u00edvneho prostredia, v ktorom m\u00f4\u017eete p\u00edsa\u0165 a vykon\u00e1va\u0165 SQL dotazy priamo v prehliada\u010di. Zdroje <noindex><a rel=\"nofollow\" href=\"https:\/\/modern-sql.com\/\">Modern SQL<\/a><\/noindex> nebud\u00fa na \u0161kodu. A tieto znalosti m\u00f4\u017eete uplatni\u0165 v <noindex><a rel=\"nofollow\" href=\"https:\/\/leetcode.com\/problemset\/database\/\">\u00faloh\u00e1ch Leetcode<\/a><\/noindex> v sekcii Datab\u00e1zy.<\/p>\n<p><b>3. Programovanie v Pythone a Java\/Scala<\/b><\/p>\n<p>Pre\u010do sa oplat\u00ed \u0161tudova\u0165 programovac\u00ed jazyk Python, u\u017e som p\u00edsal v \u010dl\u00e1nku <noindex><a rel=\"nofollow\" href=\"https:\/\/medium.com\/datadriveninvestor\/python-vs-r-choosing-the-best-tool-for-ai-ml-data-science-7e0c2295e243\">Python vs R. V\u00fdber najlep\u0161ieho n\u00e1stroja pre AI, ML a Data Science<\/a><\/noindex>. \u010co sa t\u00fdka Javy a Scaly, v\u00e4\u010d\u0161ina n\u00e1strojov na ukladanie a spracovanie obrovsk\u00fdch objemov d\u00e1t je nap\u00edsan\u00e1 v t\u00fdchto jazykoch. Napr\u00edklad:<\/p>\n<ul>\n<li>Apache Kafka (Scala)<\/li>\n<li>Hadoop, HDFS (Java)<\/li>\n<li>Apache Spark (Scala)<\/li>\n<li>Apache Cassandra (Java)<\/li>\n<li>HBase (Java)<\/li>\n<li>Apache Hive (Java)<\/li>\n<\/ul>\n<p>Aby ste porozumeli, ako tieto n\u00e1stroje funguj\u00fa, mus\u00edte pozna\u0165 jazyky, v ktor\u00fdch s\u00fa nap\u00edsan\u00e9. Funkcion\u00e1lny pr\u00edstup jazyka Scala umo\u017e\u0148uje efekt\u00edvne rie\u0161i\u0165 \u00falohy paraleln\u00e9ho spracovania d\u00e1t. Python, \u017eia\u013e, nem\u00f4\u017ee pon\u00faknu\u0165 r\u00fdchlos\u0165 a paraleln\u00e9 spracovanie. V\u0161eobecne plat\u00ed, \u017ee znalos\u0165 nieko\u013ek\u00fdch jazykov a programovac\u00edch paradigmat posil\u0148uje \u0161\u00edrku pr\u00edstupov k rie\u0161eniu probl\u00e9mov.<\/p>\n<p>Aby ste sa mohli do jazyka Scala ponori\u0165, m\u00f4\u017eete si pre\u010d\u00edta\u0165 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/0981531687\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=0981531687&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=69314619f1e546e3921eb97c72cf4850\">Programovanie v Scale<\/a><\/noindex> od autora jazyka. Takisto spolo\u010dnos\u0165 Twitter zverejnila dobr\u00e9ho \u00favodn\u00e9ho sprievodcu \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/twitter.github.io\/scala_school\/\">Scala School<\/a><\/noindex>.<\/p>\n<p>Pokia\u013e ide o Python, pova\u017eujem <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/1491946008\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=1491946008&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=8a663e966770c24874e323133cc7a005\">Fluent Python<\/a><\/noindex> za najlep\u0161iu knihu na strednej \u00farovni.<\/p>\n<p><b>4. N\u00e1stroje na pr\u00e1cu s ve\u013ek\u00fdmi d\u00e1tami<\/b><\/p>\n<p>Tu je zoznam najpopul\u00e1rnej\u0161\u00edch n\u00e1strojov vo svete ve\u013ek\u00fdch d\u00e1t:<\/p>\n<ul>\n<li>Apache Spark<\/li>\n<li>Apache Kafka<\/li>\n<li>Apache Hadoop (HDFS, HBase, Hive)<\/li>\n<li>Apache Cassandra<\/li>\n<\/ul>\n<p>Viac inform\u00e1ci\u00ed o budovan\u00ed ve\u013ek\u00fdch blokov d\u00e1t n\u00e1jdete v tejto \u00fa\u017easnej <noindex><a rel=\"nofollow\" href=\"http:\/\/xyz.insightdataengineering.com\/blog\/pipeline_map\/\">interakt\u00edvnej platforme<\/a><\/noindex>. Najpopul\u00e1rnej\u0161ie n\u00e1stroje s\u00fa Spark a Kafka. Ur\u010dite sa oplat\u00ed ich \u0161tudova\u0165 a ide\u00e1lne pochopi\u0165, ako funguj\u00fa zvn\u00fatra. Jay Kreps (spolutvorca Kafky) publikoval v roku 2013 monument\u00e1lne dielo <noindex><a rel=\"nofollow\" href=\"https:\/\/engineering.linkedin.com\/distributed-systems\/log-what-every-software-engineer-should-know-about-real-time-datas-unifying\">The Log: \u010do by mal ka\u017ed\u00fd softv\u00e9rov\u00fd v\u00fdvoj\u00e1r vedie\u0165 o abstrakcii zlu\u010dovania d\u00e1t v re\u00e1lnom \u010dase<\/a><\/noindex>, mimochodom, hlavn\u00e9 my\u0161lienky z tohto talmudu boli pou\u017eit\u00e9 na vytvorenie Apache Kafky.<\/p>\n<ul>\n<li>\u00davod do Hadoopu m\u00f4\u017ee sl\u00fa\u017ei\u0165 ako <noindex><a rel=\"nofollow\" href=\"https:\/\/data-flair.training\/blogs\/hadoop-tutorials-home\/\">Kompletn\u00fd sprievodca osvojovan\u00edm Hadoopu (zadarmo)<\/a><\/noindex>.<\/li>\n<li>Najkompletnej\u0161\u00ed sprievodca Apache Spark pre m\u0148a je <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/1491912219\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=1491912219&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=5b206424060cfc80a33d13b05c0bfee2\">Spark: kompletn\u00fd sprievodca<\/a><\/noindex>.<\/li>\n<\/ul>\n<p><b>5. Cloudov\u00e9 platformy<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/cc435bc9f9b91ec87d1cf7a591cf84a2.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZnalos\u0165 aspo\u0148 jednej cloudovej platformy je na zozname z\u00e1kladn\u00fdch po\u017eiadaviek na uch\u00e1dza\u010dov na poz\u00edciu d\u00e1tov\u00e9ho in\u017einiera. Zamestn\u00e1vatelia uprednost\u0148uj\u00fa Amazon Web Services, na druhom mieste je cloudov\u00e1 platforma Google a na tre\u0165om Microsoft Azure.<\/p>\n<p>Mali by ste sa dobre orientova\u0165 v Amazon EC2, AWS Lambda, Amazon S3, DynamoDB.<\/p>\n<p><b>6. Distribuovan\u00e9 syst\u00e9my<\/b><\/p>\n<p>Pr\u00e1ca s ve\u013ek\u00fdmi d\u00e1tami predpoklad\u00e1 pr\u00edtomnos\u0165 klastrov nez\u00e1visle funguj\u00facich po\u010d\u00edta\u010dov, ktor\u00fdch spojenie prebieha cez sie\u0165. \u010c\u00edm v\u00e4\u010d\u0161\u00ed je klaster, t\u00fdm je pravdepodobnej\u0161ie, \u017ee dojde k zlyhaniu jeho uzlov. Aby ste sa stali skvel\u00fdm odborn\u00edkom na d\u00e1ta, mus\u00edte prenikn\u00fa\u0165 do probl\u00e9mov a existuj\u00facich rie\u0161en\u00ed pre distribuovan\u00e9 syst\u00e9my. T\u00e1to oblas\u0165 je star\u00e1 a zlo\u017eit\u00e1.<\/p>\n<p>Andrew Tanenbaum je pova\u017eovan\u00fd za priekopn\u00edka v tejto oblasti. Pre t\u00fdch, ktor\u00ed sa neboja te\u00f3rie, odpor\u00fa\u010dam jeho knihu <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/1543057381\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=1543057381&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=721aedeb23c313bc46a92c134c5baafa\">\u201eDistribuovan\u00e9 syst\u00e9my\u201c<\/a><\/noindex>, pre za\u010diato\u010dn\u00edkov sa m\u00f4\u017ee zda\u0165 zlo\u017eit\u00e1, ale naozaj v\u00e1m pom\u00f4\u017ee zdokonali\u0165 va\u0161e zru\u010dnosti.<\/p>\n<p>Pova\u017eujem <noindex><a rel=\"nofollow\" href=\"https:\/\/www.amazon.com\/gp\/product\/1449373321\/ref=as_li_tl?ie=UTF8&amp;camp=1789&amp;creative=9325&amp;creativeASIN=1449373321&amp;linkCode=as2&amp;tag=adilkhash-20&amp;linkId=e7e0e096aa5761066245eb90965ac849\">\u201eNavrhovanie aplik\u00e1ci\u00ed intenz\u00edvne vyu\u017e\u00edvaj\u00facich d\u00e1ta\u201c od autora Martyna Kleppmanna<\/a><\/noindex> za najlep\u0161iu \u00favodn\u00fa knihu. Mimochodom, Martyn m\u00e1 skvel\u00fd <noindex><a rel=\"nofollow\" href=\"https:\/\/martin.kleppmann.com\/\">blog<\/a><\/noindex>. Jeho pr\u00e1ca pom\u00f4\u017ee systematizova\u0165 vedomosti o budovan\u00ed modernej infra\u0161trukt\u00fary pre ukladanie a spracovanie ve\u013ek\u00fdch d\u00e1t.<br \/>\nPre t\u00fdch, ktor\u00ed maj\u00fa radi sledovanie vide\u00ed, je na Youtube kurz <noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/watch?v=w8KFPWkK0bI&amp;list=PLawkBQ15NDEkDJ5IyLIJUTZ1rRM9YQq6N&amp;index=2&amp;t=0s\">Distribuovan\u00e9 po\u010d\u00edta\u010dov\u00e9 syst\u00e9my<\/a><\/noindex>.<\/p>\n<p><b>7. D\u00e1tov\u00e9 potrubia<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/cf1c8e2baad0cc79c0b8c3707741353a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nD\u00e1tov\u00e9 potrubia s\u00fa nie\u010do, bez \u010doho nem\u00f4\u017eete \u017ei\u0165 ako d\u00e1tov\u00fd in\u017einier.<\/p>\n<p>V\u00e4\u010d\u0161inu \u010dasu d\u00e1tov\u00fd in\u017einier vytv\u00e1ra takzvan\u00fa d\u00e1tov\u00fa pipeline, teda vytv\u00e1ra proces dod\u00e1vania d\u00e1t z jedn\u00e9ho miesta na in\u00e9. M\u00f4\u017eu to by\u0165 pou\u017e\u00edvate\u013esk\u00e9 scen\u00e1re, ktor\u00e9 id\u00fa k API extern\u00e9ho servisu alebo robia SQL dotaz, dop\u013a\u0148aj\u00fa d\u00e1ta a ukladaj\u00fa ich do centralizovan\u00e9ho \u00falo\u017eiska (data warehouse) alebo \u00falo\u017eiska nestrukt\u00farovan\u00fdch d\u00e1t (d\u00e1tov\u00e9 jazer\u00e1).<\/p>\n<p><b>Zhrnutie: z\u00e1kladn\u00fd checklist d\u00e1tov\u00e9ho in\u017einiera<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/de0eca662b2246e63901afb89c9f255f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nZhr\u0148me \u2014 je potrebn\u00e9 dobr\u00e9 porozumenie nasleduj\u00facim:<\/p>\n<ul>\n<li>Informa\u010dn\u00e9 syst\u00e9my;<\/li>\n<li>V\u00fdvoj softv\u00e9ru (Agile, DevOps, Design Techniques, SOA);<\/li>\n<li>Distribuovan\u00e9 syst\u00e9my a paraleln\u00e9 programovanie;<\/li>\n<li>Z\u00e1klady datab\u00e1z \u2014 pl\u00e1novanie, n\u00e1vrh, prev\u00e1dzka a opravy;<\/li>\n<li>Dizajn experimentov \u2014 A\/B testy na preuk\u00e1zanie konceptov, ur\u010dovanie spo\u013eahlivosti, v\u00fdkonu syst\u00e9mov, ako aj na v\u00fdvoj spo\u013eahliv\u00fdch ciest pre operat\u00edvne poskytovanie dobr\u00fdch rie\u0161en\u00ed.<\/li>\n<\/ul>\n<p>Toto je len nieko\u013eko po\u017eiadaviek na to, aby ste sa stali d\u00e1tov\u00fdm in\u017einierom, preto \u0161tudujte a zorientujte sa v d\u00e1tov\u00fdch syst\u00e9moch, informa\u010dn\u00fdch syst\u00e9moch, kontinu\u00e1lnej dod\u00e1vke\/ nasaden\u00ed\/ integr\u00e1cii, programovac\u00edch jazykoch a in\u00fdch t\u00e9mach v informatike (nie vo v\u0161etk\u00fdch predmetov\u00fdch oblasti).<\/p>\n<p><b>A nakoniec, posledn\u00e1, ale ve\u013emi d\u00f4le\u017eit\u00e1 vec, ktor\u00fa chcem poveda\u0165.<\/b><\/p>\n<blockquote><p><i><b>Cesta k tomu, aby ste sa stali d\u00e1tov\u00fdm in\u017einierom, nie je tak jednoduch\u00e1, ako by sa mohlo zda\u0165. Nezodp\u00fa\u0161\u0165a a dok\u00e1\u017ee frustrova\u0165, preto mus\u00edte by\u0165 na to pripraven\u00ed. Niektor\u00e9 momenty na tejto ceste v\u00e1s m\u00f4\u017eu prin\u00fati\u0165 vzda\u0165 sa. Ale je to skuto\u010dne \u0165a\u017ek\u00e1 pr\u00e1ca a proces u\u010denia.<\/b><\/i><\/p><\/blockquote>\n<p>Jednoducho to od za\u010diatku nepreh\u00e1\u0148ajte. Cel\u00fd zmysel tejto cesty spo\u010d\u00edva v tom, aby ste sa \u010do najviac nau\u010dili a boli pripraven\u00ed na nov\u00e9 v\u00fdzvy.<br \/>\nTu je skvel\u00fd obr\u00e1zok, na ktor\u00fd som narazil, a ktor\u00fd dobre ilustruje tento moment:<\/p>\n<p><img decoding=\"async\" alt=\"Kto s\u00fa d\u00e1tov\u00ed in\u017einieri a ako sa nimi stan\u00fa?\" src=\"\/wp-content\/uploads\/2019\/05\/9cc8db9011e5f54717d7e9f31f915523.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nA \u00e1no, nezabudnite sa vyhn\u00fa\u0165 vyhoreniu a oddychova\u0165. To je tie\u017e ve\u013emi d\u00f4le\u017eit\u00e9. Ve\u013ea \u0161\u0165astia!<\/p>\n<p>Ako sa v\u00e1m p\u00e1\u010di \u010dl\u00e1nok, priatelia? Poz\u00fdvame v\u00e1s na <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/RCuj\/\">bezplatn\u00fd webin\u00e1r<\/a><\/noindex>, ktor\u00fd sa uskuto\u010dn\u00ed u\u017e dnes o 20:00. V r\u00e1mci webin\u00e1ra prediskutujeme, ako vybudova\u0165 efekt\u00edvny a \u0161k\u00e1lovate\u013en\u00fd syst\u00e9m spracovania d\u00e1t pre mal\u00fa firmu alebo startup s minim\u00e1lnymi n\u00e1kladmi. V praxi sa zozn\u00e1mime s n\u00e1strojmi spracovania d\u00e1t Google Cloud. Te\u0161\u00edme sa na v\u00e1s!<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/otus\/blog\/452670\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418 \u0441\u043d\u043e\u0432\u0430 \u0437\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435! \u0417\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u0441\u0442\u0430\u0442\u044c\u0438 \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u0441\u0430\u043c \u043e \u0441\u0435\u0431\u0435. \u0412 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00abData Engineer\u00bb \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u0442\u044c\u0441\u044f \u0432 \u0442\u043e\u043c, \u043a\u0442\u043e \u0436\u0435 \u0442\u0430\u043a\u0438\u0435 \u0434\u0430\u0442\u0430-\u0438\u043d\u0436\u0435\u043d\u0435\u0440\u044b. \u0412 \u0441\u0442\u0430\u0442\u044c\u0435 \u043e\u0447\u0435\u043d\u044c \u043c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0445 \u0441\u0441\u044b\u043b\u043e\u043a. \u041f\u0440\u0438\u044f\u0442\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0447\u0442\u0435\u043d\u0438\u044f. \u041f\u0440\u043e\u0441\u0442\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043e \u0442\u043e\u043c, \u043a\u0430\u043a \u043f\u043e\u0439\u043c\u0430\u0442\u044c \u0432\u043e\u043b\u043d\u0443 Data Engineering \u0438 \u043d\u0435 \u0434\u0430\u0442\u044c \u0435\u0439 \u0437\u0430\u0442\u044f\u043d\u0443\u0442\u044c \u0432\u0430\u0441 \u0432 \u043f\u0443\u0447\u0438\u043d\u0443. \u0421\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432\u043f\u0435\u0447\u0430\u0442\u043b\u0435\u043d\u0438\u0435, \u0447\u0442\u043e \u0432 \u043d\u0430\u0448\u0438 \u0434\u043d\u0438 \u043a\u0430\u0436\u0434\u044b\u0439 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25729,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-34083","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0418 \u0441\u043d\u043e\u0432\u0430 \u0437\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439\u0442\u0435! \u0417\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u0441\u0442\u0430\u0442\u044c\u0438 \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u0441\u0430\u043c \u043e \u0441\u0435\u0431\u0435.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/kto-takie-data-inzhenery-i-kak-imi-stanovyatsya\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"sk_SK\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u041a\u0442\u043e \u0442\u0430\u043a\u0438\u0435 \u0434\u0430\u0442\u0430-\u0438\u043d\u0436\u0435\u043d\u0435\u0440\u044b, \u0438 \u043a\u0430\u043a \u0438\u043c\u0438 \u0441\u0442\u0430\u043d\u043e\u0432\u044f\u0442\u0441\u044f? 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