{"id":3427,"date":"2022-12-07T10:33:06","date_gmt":"2022-12-07T10:33:06","guid":{"rendered":"http:\/\/the-codest.localhost\/blog\/learn-more-about-ruby-on-rails-with-pub-sub\/"},"modified":"2026-03-09T13:04:35","modified_gmt":"2026-03-09T13:04:35","slug":"suzinokite-daugiau-apie-ruby-on-rails-su-pub-sub","status":"publish","type":"post","link":"https:\/\/thecodest.co\/lt\/blog\/learn-more-about-ruby-on-rails-with-pub-sub\/","title":{"rendered":"Su\u017einokite daugiau apie Ruby on Rails su \"Pub\/Sub"},"content":{"rendered":"<p><strong><a href=\"https:\/\/thecodest.co\/lt\/case-studies\/providing-a-team-of-ruby-developers-for-a-fintech-company\/\">Ruby<\/a> svetain\u0117je <a href=\"https:\/\/thecodest.co\/lt\/blog\/ways-to-increase-your-rails-performance\/\">B\u0117giai<\/a><\/strong> (B\u0117giai, <a href=\"https:\/\/thecodest.co\/lt\/blog\/hire-ror-developer\/\">RoR<\/a>) yra gerai \u017einomas <a href=\"https:\/\/thecodest.co\/lt\/blog\/find-your-ideal-stack-for-web-development\/\">\u017einiatinklio svetain\u0117<\/a> taikomoji sistema, para\u0161yta <strong>Ruby<\/strong> programavimo kalba. <strong>Vie\u0161butis \/ restoranas<\/strong> yra trumpas programin\u0117s \u012frangos projektavimo \u0161ablon\u0173, vadinam\u0173 <b>Leidinio prenumerata<\/b>. Paai\u0161kinsiu, kaip \"Rails\" programin\u0117s \u012frangos komponent\u0173 bendravimas gali b\u016bti tvarkomas naudojant \"Pub\/Sub\".<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kas yra \"Pub\/sub\"?<\/h2>\n\n\n\n<p><strong>Vie\u0161butis \/ pavald\u017eioji \u012fstaiga<\/strong> yra programin\u0117s \u012frangos projektavimo modelis, u\u017etikrinantis ry\u0161\u012f tarp paslaug\u0173. Paslauga<br>atlieka vien\u0105 i\u0161 dviej\u0173 vaidmen\u0173: leid\u0117jo (kuris gamina) arba gav\u0117jo (kuris vartoja). Kas yra<br>gaminamas ir vartojamas kaip \u012fvykis, prane\u0161imas arba prane\u0161imas. \u012e<br>\u0161iame straipsnyje jie vartojami pakaitomis tam pa\u010diam dalykui \u012fvardyti.<br>Paslauga, kuri gamina, ne\u017eino, kas vartoja. Paslauga, kuri vartoja, ne\u017eino.<br>su\u017einoti prane\u0161imo kilm\u0119. Jie gali likti ne\u017einomi vienas kitam. Tai skiriasi nuo<br>prane\u0161im\u0173 eil\u0117s, kai prane\u0161im\u0105 siun\u010diantis komponentas da\u017enai \u017eino jo paskirties viet\u0105.<br>- \u0161is \u017einu\u010di\u0173 siuntimo stilius leid\u017eia si\u0173sti \u017einutes bet kur. \u0160is mechanizmas yra pagrindinis<br>i\u0161 <strong>Vie\u0161butis \/ pavald\u017eioji \u012fstaiga<\/strong> ir tai rei\u0161kia, kad jie yra atsieti.<\/p>\n\n\n\n<p>Kad gal\u0117t\u0173 i\u0161reik\u0161ti abipusius interesus, jie turi tur\u0117ti bendr\u0105 supratim\u0105. Tod\u0117l,<br>abu vaidmenys turi numanom\u0105 \"lazdel\u0117s\" mechanizm\u0105, kai prane\u0161imo gamintojas ir<br>susitikti su prane\u0161imo vartotoju. \u0160is mechanizmas vadinamas subjektu, prenumerata arba tema. Jis yra<br>atsakinga u\u017e prane\u0161im\u0173 priskyrim\u0105 kategorijoms pagal subjektus, i\u0161 esm\u0117s tai yra beb\u016bklinis prane\u0161im\u0173 filtras.<br>Temos veikia kaip transliavimo stotys. Leid\u0117jas sukuria prane\u0161im\u0105 temai,<br>abonentai i\u0161 karto gauna prane\u0161im\u0105 i\u0161 temos. D\u0117l atsietos<br>paslaugomis, efektyviausias b\u016bdas keistis prane\u0161imais yra juos tvarkyti asinchroni\u0161kai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u0117giai be \"Pub\/Sub<\/h2>\n\n\n\n<p>Pagal numatytuosius nustatymus \"Rails\" n\u0117ra joki\u0173 \"Rails\" prid\u0117tini\u0173 i\u0161laid\u0173, susijusi\u0173 su programin\u0117s \u012frangos projektavimo \u0161ablonais, skirtais prane\u0161imams tarp komponent\u0173 perduoti. K\u016br\u0117jai naudoja standartinius <strong>\u012f objektus orientuotas programavimas<\/strong> (<a href=\"https:\/\/thecodest.co\/lt\/dictionary\/object-oriented-programming-oop\/\">OOP<\/a>) paradigma: parametr\u0173 perdavimas funkcijoms, klausiant klasi\u0173 apie reik\u0161mes.<\/p>\n\n\n\n<p>Kai parai\u0161ka yra gana nesud\u0117tinga, to gali pakakti. Kai programa auga, pavyzd\u017eiui, kai kurias operacijas reikia atlikti asinchroni\u0161kai, tada <a href=\"https:\/\/thecodest.co\/lt\/dictionary\/why-do-projects-fail\/\">projektas<\/a> reikia abstrakcijos, kuri i\u0161sprend\u017eia, kad <a href=\"https:\/\/thecodest.co\/lt\/blog\/app-data-collection-security-risks-value-and-types-explored\/\">duomenys<\/a> darbo eiga. U\u017euot i\u0161radin\u0117j\u0119 dvirat\u012f, k\u016br\u0117jai gali \u012fgyvendinti <strong>Vie\u0161butis \/ pavald\u017eioji \u012fstaiga<\/strong> u\u017epildyti \u0161\u012f abstrakcijos tr\u016bkum\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\"Pub\/Sub\" privalumai naudojant \"Rails<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Venkite aktyvi\u0173 \u012fra\u0161\u0173 atgalini\u0173 i\u0161kvietim\u0173.<\/li>\n\n\n\n<li>\u012e sistem\u0105 \u012ftraukus asinchronin\u012f lygiagret\u0173j\u012f apdorojim\u0105, padid\u0117ja na\u0161umas, patikimumas ir patikimumas. <a href=\"https:\/\/thecodest.co\/lt\/blog\/difference-between-elasticity-and-scalability-in-cloud-computing\/\">mastelio keitimas<\/a> yra patobulintos.<\/li>\n\n\n\n<li>Prane\u0161imai gali b\u016bti transliuojami asinchroni\u0161kai \u012f skirtingas sistemos dalis.<\/li>\n\n\n\n<li>Leid\u017eia asinchroni\u0161kai transliuoti prane\u0161imus \u012f skirtingas sistemos dalis.<\/li>\n\n\n\n<li>Atskyrimas - funkcijos prid\u0117jimas ar pakeitimas netur\u0117s jokios \u012ftakos, nes \"Pub\/Sub<br>galite keisti, kaip viskas s\u0105veikauja.<\/li>\n\n\n\n<li>Prane\u0161imo vartotojui nebereik\u0117s periodi\u0161kai tikrinti, ar n\u0117ra atnaujinim\u0173 arba nauj\u0173<br>informacija. Tai suma\u017eina pristatymo v\u0117lavim\u0105, kuris gali b\u016bti ypa\u010d problemi\u0161kas sistemose.<br>be jokios tolerancijos v\u0117lavimui.<\/li>\n\n\n\n<li>Sistema negali apriboti abonent\u0173 skai\u010diaus, nes jis gali keistis,<br>bet kada atnaujinti, padauginti arba i\u0161nykti.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\"Pub\/Sub\" su \"Rails\" tr\u016bkumai<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pagrindinis Pub\/sub sistem\u0173 tr\u016bkumas yra tai, kad leid\u0117jas ir<br>abonentas.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Rails Pub\/Sub pristatyti<\/h2>\n\n\n\n<p>\"Rails\" \u0161altinio pavyzd\u017eiai buvo para\u0161yti naudojant bibliotek\u0105<br><a href=\"https:\/\/github.com\/stevo\/pubsub_on_rails\" rel=\"nofollow\">\"Pub\/Sub on Rails<\/a> (Ruby nomenklat\u016broje biblioteka vadinama gem): Daugiau informacijos rasite gem'o readme. \u012egyvendinim\u0105 sudaro moduliai:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Domenas,<\/li>\n\n\n\n<li>Renginys,<\/li>\n\n\n\n<li>\u012evykio tvarkykl\u0117,<\/li>\n\n\n\n<li>Renginio leid\u0117jas,<\/li>\n\n\n\n<li>Prenumerata.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Domenas<\/h3>\n\n\n\n<p>Apra\u0161oma verslo logika, kad b\u016bt\u0173 galima pateikti \"Pub\/Sub\" kontekst\u0105 ir taip u\u017etikrinti \u0161vari\u0105 \"Pub\/Sub\" logik\u0105. <a href=\"https:\/\/thecodest.co\/lt\/dictionary\/what-is-code-refactoring\/\">kodas<\/a>.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"ruby\" class=\"language-ruby\"> modulis Prane\u0161imai\n   i\u0161pl\u0117sti PubSub::Domain\n pabaiga<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"ruby\" class=\"language-ruby\"> modulis Ataskaitos\n   i\u0161pl\u0117sti PubSub::Domain\n pabaiga\n\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Renginys<\/h3>\n\n\n\n<p>Tai klas\u0117, kurioje apra\u0161oma tai, kas \u012fvyko. Deklaruokite klas\u0117s pavadinim\u0105 kaip savaime apib\u016bdinant\u012f, kas \u012fvyko, pavyzd\u017eiui: at\u0161aukta, pakeista, sukurta, sunaikinta, i\u0161si\u0173sta, atnaujinta. \u012evyki\u0173 pavadinimai gali atrodyti taip: ProfitAndLossStatementCreatedEvent, kuris rei\u0161kia, kad buvo sukurta finansin\u0117 ataskaita.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"ruby\" class=\"language-ruby\"> klas\u0117 Reports::ProfitAndLossStatementCreatedEvent &lt; PubSub::DomainEvent\n   atributas :profit_and_loss_statement_id, Types::Strict::Integer\n end<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Renginio leid\u0117jas<\/h3>\n\n\n\n<p>Klas\u0117, galinti skleisti \u012fvykius. Pavyzdyje parodyta, kaip sukurti paslaugos ataskait\u0105. S\u0117kmingai suk\u016brus ataskait\u0105, i\u0161spinduliuojamas \u0161ios ataskaitos suk\u016brimo \u012fvykis.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"ruby\" class=\"language-ruby\">klas\u0117 Reports::ProfitAndLossStatementService\n   include PubSub::Emit\n    def execute\n     emit(:report_profit_and_loss_statement_created, profit_and_loss_statement_id: id) if result.ok?\n   end\n end<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u012evykio tvarkykl\u0117<\/h3>\n\n\n\n<p>\u0160i klas\u0117 tur\u0117t\u0173 b\u016bti vykdoma kaip atsakas \u012f \u012fvykio tvarkym\u0105.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"ruby\" class=\"language-ruby\">modulis Prane\u0161imai\n klas\u0117 ReportsProfitAndLossStatementCreatedHandler &lt; PubSub::DomainEventHandler\n   def call\n     ReportMailer.profit_and_loss_statement(profit_and_loss_statement).deliver_now\n   end\n\n   privatus\n\n   def pelno_ir_nuostolio_ataskaita\n     ProfitAndLossStatement.find(event_data.profit_and_loss_statement_id)\n   end\n end\nend<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Prenumerata<\/h3>\n\n\n\n<p>\u012evykiai su savo tvarkytojais susiejami per prenumeratas.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"yaml\" class=\"language-yaml\">prane\u0161imai:\n reports__profit_and_loss_statement_created: async<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Naudojimo atvej\u0173 pavyzd\u017eiai:<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\"Follow\" funkcija socialiniuose tinkluose,<\/li>\n\n\n\n<li>Daikt\u0173 internetas,<\/li>\n\n\n\n<li>Siuntimas pa\u0161tu,<\/li>\n\n\n\n<li>Prane\u0161imas apie sugeneruotus failus.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pana\u0161\u016bs modeliai<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><b>EventBus<\/b> - komponentai gali si\u0173sti \u012fvykius \u012f \"EventBus\" ne\u017einodami, kas juos priims ir kiek respondent\u0173 juos priims. <a href=\"https:\/\/thecodest.co\/lt\/blog\/react-development-all-you-have-to-know\/\">reaguoti<\/a>,<\/li>\n\n\n\n<li><b>Steb\u0117tojas<\/b> - subjektas turi priklausom\u0173 asmen\u0173, vadinam\u0173 steb\u0117tojais, s\u0105ra\u0161\u0105 ir prane\u0161a jiems, kai pasikei\u010dia j\u0173 b\u016bsena,<\/li>\n\n\n\n<li><b>Surinkimas<\/b> - apklausos metu klientai periodi\u0161kai teiraujasi sistemos, ar yra nauj\u0173 \u012fvyki\u0173 arba duomen\u0173.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Brangakmeniai<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\n<p><a href=\"https:\/\/github.com\/edisonywh\/rocketman\" rel=\"nofollow\">https:\/\/github.com\/edisonywh\/rocketman<\/a><\/p>\n<\/li>\n\n\n\n<li>\n<p><a href=\"https:\/\/github.com\/krisleech\/wisper\" rel=\"nofollow\">https:\/\/github.com\/krisleech\/wisper<\/a><\/p>\n<\/li>\n\n\n\n<li>\n<p><a href=\"https:\/\/github.com\/stevo\/pubsub_on_rails\" rel=\"nofollow\">https:\/\/github.com\/stevo\/pubsub<em>svetain\u0117je<\/em>b\u0117giai<\/a><\/p>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Santrauka<\/h2>\n\n\n\n<p>\"Pub\/sub\" n\u0117ra \u012fprastas \"Ruby in Rails\" metodas. Kaip pristatoma straipsnyje, \u0161is modelis gali duoti daug naudos projektui - d\u0117l jo kodas gali b\u016bti \u0161varus, paslaugos gali b\u016bti atskirtos ir lengvai kei\u010diamos.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/thecodest.co\/contact\"><img decoding=\"async\" src=\"\/app\/uploads\/2024\/05\/interested_in_cooperation_.png\" alt=\"bendradarbiavimo v\u0117liava\"\/><\/a><\/figure>","protected":false},"excerpt":{"rendered":"<p>\"Pub\/Sub\" projektui gali duoti daug naudos - d\u0117l jos kodas gali b\u016bti \u0161varus, paslaugos gali b\u016bti atskirtos ir lengvai kei\u010diamos. Su\u017einokite daugiau apie \"Pub\/Sub\" \u0161iame straipsnyje ir pakelkite savo projekto lyg\u012f!<\/p>","protected":false},"author":2,"featured_media":3428,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[12],"class_list":["post-3427","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-development","tag-it"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Learn More about Ruby on Rails with Pub\/Sub - The Codest<\/title>\n<meta name=\"description\" content=\"Explore the Pub\/Sub design pattern in Ruby on Rails and see how it enables event-driven communication and scalable system architecture.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/lt\/tinklarastis\/suzinokite-daugiau-apie-ruby-on-rails-su-pub-sub\/\" \/>\n<meta property=\"og:locale\" content=\"lt_LT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Learn More about Ruby on Rails with Pub\/Sub\" \/>\n<meta property=\"og:description\" content=\"Explore the Pub\/Sub design pattern in Ruby on Rails and see how it enables event-driven communication and scalable system architecture.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thecodest.co\/lt\/tinklarastis\/suzinokite-daugiau-apie-ruby-on-rails-su-pub-sub\/\" \/>\n<meta property=\"og:site_name\" content=\"The Codest\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-07T10:33:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-09T13:04:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thecodest.co\/app\/uploads\/2024\/05\/ruby_on_rails_with_pubsub.png\" \/>\n\t<meta property=\"og:image:width\" content=\"960\" \/>\n\t<meta property=\"og:image:height\" content=\"540\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"thecodest\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"thecodest\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/\"},\"author\":{\"name\":\"thecodest\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/#\\\/schema\\\/person\\\/7e3fe41dfa4f4e41a7baad4c6e0d4f76\"},\"headline\":\"Learn More about Ruby on Rails with Pub\\\/Sub\",\"datePublished\":\"2022-12-07T10:33:06+00:00\",\"dateModified\":\"2026-03-09T13:04:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/\"},\"wordCount\":778,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/thecodest.co\\\/app\\\/uploads\\\/2024\\\/05\\\/ruby_on_rails_with_pubsub.png\",\"keywords\":[\"IT\"],\"articleSection\":[\"Software Development\"],\"inLanguage\":\"lt-LT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/blog\\\/learn-more-about-ruby-on-rails-with-pub-sub\\\/\",\"name\":\"Learn More about Ruby on Rails with Pub\\\/Sub - 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