{"id":80224,"date":"2020-05-04T13:42:20","date_gmt":"2020-05-04T11:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/storacle-deczentralizovannoe-hranilishhe-fajlov"},"modified":"2020-05-04T13:42:20","modified_gmt":"2020-05-04T11:42:20","slug":"storacle-deczentralizovannoe-hranilishhe-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/storacle-deczentralizovannoe-hranilishhe-fajlov","title":{"rendered":"Storacle \u2014 decentralizovan\u00e9 \u00falo\u017ei\u0161t\u011b soubor\u016f","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Storacle \u2014 decentralizovan\u00e9 \u00falo\u017ei\u0161t\u011b soubor\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/333f7b998e00ce32367d97f7ccd05bef.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Ne\u017e za\u010dnu, mus\u00edm poskytnout <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/495058\/\">odkaz na p\u0159edchoz\u00ed \u010dl\u00e1nek<\/a><\/noindex>, abych bylo jasn\u00e9, o \u010dem p\u0159esn\u011b mluv\u00edm.<\/p>\n<p><\/p>\n<p>V tomto \u010dl\u00e1nku bych cht\u011bl probrat vrstvu, kter\u00e1 je odpov\u011bdn\u00e1 za ukl\u00e1d\u00e1n\u00ed soubor\u016f, a jak to m\u016f\u017ee b\u00fdt pou\u017eito ka\u017ed\u00fdm u\u017eivatelem. <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ortexx\/storacle\/\">Storacle je samostatn\u00e1 knihovna<\/a><\/noindex>, kter\u00e1 nem\u00e1 p\u0159\u00edmou vazbu na hudbu. Lze uspo\u0159\u00e1dat ulo\u017een\u00ed jak\u00fdchkoli soubor\u016f.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>V p\u0159edchoz\u00edm \u010dl\u00e1nku jsem trochu \"na\u0161tval\" <strong>ipfs<\/strong>, ale stalo se tak pr\u00e1v\u011b v kontextu \u00fakolu, kter\u00fd jsem \u0159e\u0161il. Celkov\u011b pova\u017euji tento projekt za skv\u011bl\u00fd. Osobn\u011b m\u00e1m rad\u011bji mo\u017enost vytv\u00e1\u0159et r\u016fzn\u00e9 s\u00edt\u011b podle r\u016fzn\u00fdch \u00fakol\u016f. To umo\u017e\u0148uje l\u00e9pe organizovat strukturu a sni\u017eovat z\u00e1t\u011b\u017e na jednotliv\u00e9 uzly a s\u00ed\u0165 jako celek. Lze dokonce v r\u00e1mci jednoho projektu, pokud je to nutn\u00e9, rozd\u011blit s\u00ed\u0165 na \u010d\u00e1sti podle ur\u010dit\u00fdch krit\u00e9ri\u00ed, \u010d\u00edm\u017e se sni\u017euje celkov\u00e1 z\u00e1t\u011b\u017e.<\/p>\n<p><\/p>\n<p>Tak\u017ee, storacle pou\u017e\u00edv\u00e1 mechanismus <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ortexx\/spreadable\">spreadable<\/a><\/noindex> pro organizaci s\u00edt\u011b. Hlavn\u00ed funkce:<\/p>\n<p><\/p>\n<ul>\n<li>Soubor\u016f lze do \u00falo\u017ei\u0161t\u011b p\u0159id\u00e1vat p\u0159es kter\u00fdkoli uzel.<\/li>\n<li>Soubory se ukl\u00e1daj\u00ed cel\u00e9, ne po bloc\u00edch.<\/li>\n<li>Ka\u017ed\u00fd soubor m\u00e1 sv\u016fj unik\u00e1tn\u00ed hash podle obsahu pro dal\u0161\u00ed pr\u00e1ci s n\u00edm.<\/li>\n<li>Soubory mohou b\u00fdt duplikov\u00e1ny pro v\u011bt\u0161\u00ed spolehlivost.<\/li>\n<li>Po\u010det soubor\u016f na jednom uzlu je omezen pouze souborov\u00fdm syst\u00e9mem (existuj\u00ed v\u00fdjimky, o kter\u00fdch budu mluvit n\u00ed\u017ee).<\/li>\n<li>Po\u010det soubor\u016f v s\u00edti je omezen mo\u017enostmi spreadable podle po\u010dtu povolen\u00fdch uzl\u016f v s\u00edti, kter\u00e9 ve druh\u00e9 verzi umo\u017en\u00ed pracovat s nekone\u010dn\u00fdm po\u010dtem uzl\u016f (o tom v jin\u00e9m \u010dl\u00e1nku).<\/li>\n<\/ul>\n<p><\/p>\n<p>Jednoduch\u00fd p\u0159\u00edklad, jak to v\u016fbec funguje z programu:<\/p>\n<p><\/p>\n<p>Server:<\/p>\n<p><\/p>\n<pre><code class=\"javascript\">const Node = require('storacle').Node;\n\n(async () =&gt; {\n  try {\n    const node = new Node({\n      port: 4000,\n      hostname: 'localhost'\n    });\n    await node.init();\n  }\n  catch(err) {\n    console.error(err.stack);\n    process.exit(1);\n  }\n})();<\/code><\/pre>\n<p><\/p>\n<p>Klient:<\/p>\n<p><\/p>\n<pre><code class=\"javascript\">const Client = require('storacle').Client;\n\n(async () =&gt; {\n  try {\n    const client = new Client({\n      address: 'localhost:4000'\n    });\n    await client.init();\n    const hash = await client.storeFile('.\/my-file');\n    const link = await client.getFileLink(hash);\n    await client.removeFile(hash);\n  }\n  catch(err) {\n    console.error(err.stack);\n    process.exit(1);\n  }\n})();<\/code><\/pre>\n<p><\/p>\n<p><strong>Pohled z vnit\u0159ku<\/strong><\/p>\n<p><\/p>\n<p>Pod kapotou nen\u00ed nic nadp\u0159irozen\u00e9ho. Informace o po\u010dtu soubor\u016f, jejich celkov\u00e9 velikosti a dal\u0161\u00ed z\u00e1le\u017eitosti jsou ulo\u017eeny v in-memory datab\u00e1zi a aktualizuj\u00ed se p\u0159i odstra\u0148ov\u00e1n\u00ed a p\u0159id\u00e1v\u00e1n\u00ed soubor\u016f, tak\u017ee nen\u00ed pot\u0159eba \u010dasto se obracet na souborov\u00fd syst\u00e9m. V\u00fdjimku p\u0159edstavuje zapnut\u00ed garbage collectoru, kdy je pot\u0159eba cirkulace soubor\u016f p\u0159i dosa\u017een\u00ed ur\u010dit\u00fdch velikost\u00ed \u00falo\u017ei\u0161t\u011b, a nikoli z\u00e1kaz p\u0159id\u00e1v\u00e1n\u00ed nov\u00fdch. V takov\u00e9m p\u0159\u00edpad\u011b je nutn\u00e9 proj\u00edt \u00falo\u017ei\u0161t\u011bm, a pr\u00e1ce s velk\u00fdm mno\u017estv\u00edm soubor\u016f (&gt; milion, \u0159ekn\u011bme) m\u016f\u017ee zp\u016fsobovat v\u00fdrazn\u00e9 zat\u00ed\u017een\u00ed. Je lep\u0161\u00ed m\u00edt m\u00e9n\u011b soubor\u016f a spustit v\u00edce uzl\u016f. Pokud je \"\u010disti\u010d\" vypnut, takov\u00fd probl\u00e9m nen\u00ed.<\/p>\n<p><\/p>\n<p>\u00dalo\u017ei\u0161t\u011b soubor\u016f se skl\u00e1d\u00e1 ze 256 slo\u017eek a 2 \u00farovn\u00ed zano\u0159en\u00ed. Soubor se ukl\u00e1daj\u00ed ve slo\u017ek\u00e1ch druh\u00e9 \u00farovn\u011b. Tak\u017ee p\u0159i 1 milionu soubor\u016f bude v ka\u017ed\u00e9 takov\u00e9 slo\u017ece p\u0159ibli\u017en\u011b 62500 kus\u016f (1000000 \/ sqrt(256)).<\/p>\n<p><\/p>\n<p>N\u00e1zev slo\u017eek je tvo\u0159en z hash souboru, aby bylo mo\u017en\u00e9 rychle z\u00edskat p\u0159\u00edstup, kdy\u017e zn\u00e1te hash.<\/p>\n<p><\/p>\n<p>Tato struktura byla zvolena s ohledem na mnoh\u00e1 r\u016fzn\u00e1 po\u017eadavky na \u00falo\u017ei\u0161t\u011b: podpora slab\u00fdch souborov\u00fdch syst\u00e9m\u016f, kde nen\u00ed \u017e\u00e1douc\u00ed m\u00edt mnoho soubor\u016f v jedn\u00e9 slo\u017ece, rychl\u00e9 prohled\u00e1n\u00ed v\u0161ech slo\u017eek p\u0159i nutnosti atd. Jak\u00fdsi zlat\u00fd st\u0159ed.<\/p>\n<p><\/p>\n<p><strong>Cacheov\u00e1n\u00ed<\/strong><\/p>\n<p><\/p>\n<p>P\u0159i p\u0159id\u00e1v\u00e1n\u00ed soubor\u016f, stejn\u011b jako p\u0159i jejich z\u00edsk\u00e1v\u00e1n\u00ed, se do cache zapisuj\u00ed odkazy na soubory.<br \/>\nD\u00edky tomu \u010dasto nen\u00ed pot\u0159eba proch\u00e1zet celou s\u00ed\u0165 ve snaze naj\u00edt soubor. To urychluje z\u00edsk\u00e1v\u00e1n\u00ed odkaz\u016f a sni\u017euje zat\u00ed\u017een\u00ed s\u00edt\u011b. Tak\u00e9 ke\u0161ov\u00e1n\u00ed prob\u00edh\u00e1 prost\u0159ednictv\u00edm http hlavi\u010dek.<\/p>\n<p><\/p>\n<p><strong>Izomorfismus<\/strong><\/p>\n<p><\/p>\n<p>Klient je naps\u00e1n v JavaScriptu a je izomorfn\u00ed, m\u016f\u017ee b\u00fdt pou\u017eit p\u0159\u00edmo z prohl\u00ed\u017ee\u010de.\u00a0<br \/>\nM\u016f\u017eete nahr\u00e1t soubor <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ortexx\/storacle\/blob\/master\/dist\/storacle.client.js\">https:\/\/github.com\/ortexx\/storacle\/blob\/master\/dist\/storacle.client.js<\/a><\/noindex> jako skript a z\u00edskat p\u0159\u00edstup k <strong>window.ClientStoracle <\/strong>nebo importovat prost\u0159ednictv\u00edm syst\u00e9mu sestaven\u00ed apod.<\/p>\n<p><\/p>\n<p><strong>Odkazy s odkladem<\/strong><\/p>\n<p><\/p>\n<p>Zaj\u00edmavou funkc\u00ed je tak\u00e9 \"odlo\u017een\u00fd odkaz\". To je odkaz na soubor, kter\u00fd lze z\u00edskat synchronn\u011b, tady a te\u010f, a soubor se st\u00e1hne, jakmile bude nalezen v \u00falo\u017ei\u0161ti. To je velmi pohodln\u00e9, kdy\u017e je nap\u0159\u00edklad pot\u0159eba na webu zobrazit n\u011bjak\u00e9 obr\u00e1zky. Jednodu\u0161e nastav\u00edme odlo\u017een\u00fd odkaz do src a je to. P\u0159\u00edpad\u016f, kter\u00e9 lze vymyslet, je spousta.<\/p>\n<p><\/p>\n<p><strong>API klienta<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>async <strong>Client.prototype.storeFile()<\/strong> \u2014 ulo\u017een\u00ed souboru<\/li>\n<li>async <strong>Client.prototype.getFileLink()<\/strong> \u2014 z\u00edsk\u00e1n\u00ed p\u0159\u00edm\u00e9ho odkazu na soubor<\/li>\n<li>async <strong>Client.prototype.getFileLinks()<\/strong> \u2014 z\u00edsk\u00e1n\u00ed seznamu p\u0159\u00edm\u00fdch odkaz\u016f na soubor ze v\u0161ech uzl\u016f, kde existuje<\/li>\n<li>async <strong>Client.prototype.getFileToBuffer()<\/strong> \u2014 z\u00edskat soubor do vyrovn\u00e1vac\u00ed pam\u011bti<\/li>\n<li>async <strong>Client.prototype.getFileToPath()<\/strong> \u2014 z\u00edskat soubor do souborov\u00e9ho syst\u00e9mu<\/li>\n<li>async <strong>Client.prototype.getFileToBlob()<\/strong> \u2014 z\u00edskat soubor do blobu (pro prohl\u00ed\u017ee\u010dovou verzi)<\/li>\n<li>async <strong>Client.prototype.removeFile()<\/strong> \u2014 odstranit soubor<\/li>\n<li><strong>Client.prototype.createRequestedFileLink()<\/strong> \u2014 vytvo\u0159it odlo\u017een\u00fd odkaz<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>Export soubor\u016f na jin\u00fd server<\/strong><\/p>\n<p><\/p>\n<p>Aby bylo mo\u017en\u00e9 p\u0159esunout soubory na jin\u00fd uzel, lze:<\/p>\n<p><\/p>\n<ul>\n<li>Jednodu\u0161e zkop\u00edrovat celou slo\u017eku \u00falo\u017ei\u0161t\u011b v\u010detn\u011b nastaven\u00ed. (v budoucnu to nemus\u00ed fungovat)<\/li>\n<li>Zkop\u00edrovat pouze slo\u017eku se soubory. Ale v tomto p\u0159\u00edpad\u011b bude nutn\u00e9 jednou spustit funkci <strong>node.normalizeFilesInfo()<\/strong>, aby se p\u0159epo\u010d\u00edtala v\u0161echna data a zanesla do datab\u00e1ze.<\/li>\n<li>Pou\u017e\u00edt funkci <strong>node.exportFiles()<\/strong>, kter\u00e1 za\u010dne kop\u00edrovat soubory.<\/li>\n<\/ul>\n<p><\/p>\n<p><strong>Hlavn\u00ed nastaven\u00ed uzlu<\/strong><br \/>\nP\u0159i spu\u0161t\u011bn\u00ed uzlu \u00falo\u017ei\u0161t\u011b m\u016f\u017eete ur\u010dit v\u0161echna pot\u0159ebn\u00e1 nastaven\u00ed.<br \/>\nPop\u00ed\u0161u nejd\u016fle\u017eit\u011bj\u0161\u00ed, ostatn\u00ed naleznete na GitHubu.<\/p>\n<p><\/p>\n<ul>\n<li><strong>storage.dataSize<\/strong> \u2014 velikost slo\u017eky se soubory<\/li>\n<li><strong>storage.tempSize<\/strong> \u2014 velikost do\u010dasn\u00e9 slo\u017eky<\/li>\n<li><strong>storage.autoCleanSize<\/strong> \u2014 minim\u00e1ln\u00ed velikost \u00falo\u017ei\u0161t\u011b, kterou je t\u0159eba udr\u017eovat. Pokud nastav\u00edte tento parametr, jakmile za\u010dne m\u00edsto doch\u00e1zet, budou odstr\u00e1ny nejm\u00e9n\u011b pou\u017e\u00edvan\u00e9 soubory.<\/li>\n<li><strong>file.maxSize<\/strong> \u2014 maxim\u00e1ln\u00ed velikost souboru<\/li>\n<li><strong>file.minSize<\/strong> \u2014 minim\u00e1ln\u00ed velikost souboru<\/li>\n<li><strong>file.preferredDuplicates<\/strong> \u2014 preferovan\u00fd po\u010det duplicit souboru v s\u00edti<\/li>\n<li><strong>file.mimeWhitelist<\/strong> \u2014 povolen\u00e9 typy soubor\u016f<\/li>\n<li><strong>file.mimeBlacklist<\/strong> \u2014 zak\u00e1zan\u00e9 typy soubor\u016f<\/li>\n<li><strong>file.extWhitelist<\/strong> \u2014 povolen\u00e9 p\u0159\u00edpony soubor\u016f<\/li>\n<li><strong>file.extBlacklist<\/strong> \u2014 zak\u00e1zan\u00e9 p\u0159\u00edpony soubor\u016f<\/li>\n<li><strong>file.linkCache<\/strong> \u2014 r\u016fzn\u00e9 nastaven\u00ed ukl\u00e1d\u00e1n\u00ed odkaz\u016f<\/li>\n<\/ul>\n<p><\/p>\n<p>T\u00e9m\u011b\u0159 v\u0161echny parametry souvisej\u00edc\u00ed s velikostmi mohou b\u00fdt stanoveny jak v absolutn\u00edch, tak v relativn\u00edch hodnot\u00e1ch.<\/p>\n<p><\/p>\n<p><strong>Pr\u00e1ce p\u0159es p\u0159\u00edkazov\u00fd \u0159\u00e1dek<\/strong><br \/>\nKnihovnu lze pou\u017e\u00edvat p\u0159es p\u0159\u00edkazov\u00fd \u0159\u00e1dek. K tomu je t\u0159eba ji nainstalovat glob\u00e1ln\u011b: <strong>npm i -g storacle<\/strong>. Po tom m\u016f\u017eete spou\u0161t\u011bt po\u017eadovan\u00e9 akce z adres\u00e1\u0159e s projektem, kde je uzel. Nap\u0159\u00edklad, <strong>storacle -a storeFile -f .\/file.txt -c .\/config.js<\/strong>, abyste p\u0159idali soubor. V\u0161echny akce najdete v <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ortexx\/storacle\/blob\/master\/bin\/actions.js\">https:\/\/github.com\/ortexx\/storacle\/blob\/master\/bin\/actions.js<\/a><\/noindex><\/p>\n<p><\/p>\n<p><strong>Pro\u010d bys to mohl pot\u0159ebovat<\/strong><\/p>\n<p><\/p>\n<ul>\n<li>Pokud chce\u0161 vytvo\u0159it n\u011bjak\u00fd decentralizovan\u00fd projekt, ve kter\u00e9m se pl\u00e1nuje ukl\u00e1dat a pracovat se soubory pohodln\u00fdmi metodami. Nap\u0159\u00edklad projekt s hudbou, jak je pops\u00e1no v odkazu na za\u010d\u00e1tku \u010dl\u00e1nku, vyu\u017e\u00edv\u00e1 <strong>storacle<\/strong>.<\/li>\n<li>Pokud pracujete na jin\u00fdch projektech, kde je pot\u0159eba distribuovan\u00e9 ukl\u00e1d\u00e1n\u00ed soubor\u016f. M\u016f\u017eete snadno vytvo\u0159it svou uzav\u0159enou s\u00ed\u0165, flexibiln\u011b nastavovat uzly a p\u0159id\u00e1vat nov\u00e9, kdy\u017e je to pot\u0159eba.<\/li>\n<li>Pokud jen pot\u0159ebujete n\u011bkde ulo\u017eit soubory sv\u00e9ho webu a nechce se v\u00e1m ps\u00e1t v\u0161echno sami. Mo\u017en\u00e1 bude tato knihovna lep\u0161\u00ed ne\u017e ostatn\u00ed v va\u0161em p\u0159\u00edpad\u011b.<\/li>\n<li>Pokud m\u00e1te projekt, ve kter\u00e9m pracujete se soubory, ale chcete v\u0161echny manipulace prov\u00e1d\u011bt z prohl\u00ed\u017ee\u010de. M\u016f\u017eete se vyhnout psan\u00ed serverov\u00e9ho k\u00f3du.<\/li>\n<\/ul>\n<p><\/p>\n<p>M\u00e9 kontakty:<\/p>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/ortex\">@ortex<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"mailto:mywebstreet@gmail.com\">mywebstreet@gmail.com<\/a><\/noindex><\/li>\n<\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/499954\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0436\u0434\u0435 \u0447\u0435\u043c \u043d\u0430\u0447\u043d\u0443, \u0434\u043e\u043b\u0436\u0435\u043d \u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0441\u0441\u044b\u043b\u043a\u0443 \u043d\u0430 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0443\u044e \u0441\u0442\u0430\u0442\u044c\u044e, \u0447\u0442\u043e\u0431\u044b \u0431\u044b\u043b\u043e \u043f\u043e\u043d\u044f\u0442\u043d\u043e \u043e \u0447\u0435\u043c \u0438\u043c\u0435\u043d\u043d\u043e \u0440\u0435\u0447\u044c. \u0412 \u044d\u0442\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u0445\u043e\u0442\u0435\u043b \u0431\u044b \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u0442\u044c \u0441\u043b\u043e\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0442\u0432\u0435\u0447\u0430\u0435\u0442 \u0437\u0430 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0444\u0430\u0439\u043b\u043e\u0432, \u0438 \u043a\u0430\u043a \u044d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u043e \u043b\u044e\u0431\u044b\u043c \u0447\u0435\u043b\u043e\u0432\u0435\u043a\u043e\u043c. Storacle \u2014 \u0441\u0430\u043c\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430, \u043d\u0438\u043a\u0430\u043a\u043e\u0439 \u0441\u0432\u044f\u0437\u0438 \u0441 \u043c\u0443\u0437\u044b\u043a\u043e\u0439 \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e \u043d\u0435\u0442. \u041c\u043e\u0436\u043d\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u043b\u044e\u0431\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432. \u0412 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":80225,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-80224","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0436\u0434\u0435 \u0447\u0435\u043c \u043d\u0430\u0447\u043d\u0443, \u0434\u043e\u043b\u0436\u0435\u043d \u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c.\" \/>\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\/cs\/blog\/administrirovanie\/storacle-deczentralizovannoe-hranilishhe-fajlov\" \/>\n\t\t<meta 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