{"id":8256,"date":"2024-12-31T23:30:16","date_gmt":"2024-12-31T20:30:16","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/java-ve-golangda-eszamanlilik-ve-paralellik-karsilastirmasi\/"},"modified":"2024-12-31T23:30:16","modified_gmt":"2024-12-31T20:30:16","slug":"java-ve-golangda-eszamanlilik-ve-paralellik-karsilastirmasi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/java-ve-golangda-eszamanlilik-ve-paralellik-karsilastirmasi\/","title":{"rendered":"Java ve Golang’da E\u015fzamanl\u0131l\u0131k ve Paralellik Kar\u015f\u0131la\u015ft\u0131rmas\u0131"},"content":{"rendered":"

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Java ve Golang’da E\u015fzamanl\u0131l\u0131k ve Paralellik Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/p>\n

Merhaba! Ben Fatih Soysal ve bug\u00fcn sizlerle Java ve Golang programlama dillerinde e\u015fzamanl\u0131l\u0131k ve paralellik kavramlar\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131raca\u011f\u0131z. Her iki dil de e\u015fzamanl\u0131 programlama i\u00e7in g\u00fc\u00e7l\u00fc \u00f6zellikler sunsa da, yakla\u015f\u0131mlar\u0131 ve performans \u00f6zellikleri bak\u0131m\u0131ndan farkl\u0131l\u0131klar g\u00f6sterir. Bu yaz\u0131da, bu farkl\u0131l\u0131klar\u0131 \u00f6rneklerle a\u00e7\u0131klayarak, hangi dilin hangi senaryoda daha uygun oldu\u011funu anlamaya \u00e7al\u0131\u015faca\u011f\u0131z. \u00d6ncelikle, e\u015fzamanl\u0131l\u0131k ve paralellik aras\u0131ndaki fark\u0131 k\u0131saca hat\u0131rlayal\u0131m.<\/p>\n

E\u015fzamanl\u0131l\u0131k ve Paralellik Aras\u0131ndaki Fark<\/h2>\n

E\u015fzamanl\u0131l\u0131k, birden fazla g\u00f6revin ayn\u0131 anda \u00e7al\u0131\u015f\u0131yormu\u015f gibi g\u00f6r\u00fcnmesini sa\u011flar. Bu, tek bir i\u015flemci \u00e7ekirde\u011finde zaman dilimlenmesiyle sa\u011flanabilir. Paralellik ise, birden fazla g\u00f6revin ger\u00e7ekten ayn\u0131 anda, farkl\u0131 i\u015flemci \u00e7ekirdeklerinde \u00e7al\u0131\u015ft\u0131\u011f\u0131 anlam\u0131na gelir. Dolay\u0131s\u0131yla, paralellik her zaman e\u015fzamanl\u0131l\u0131\u011f\u0131 ima eder, ancak e\u015fzamanl\u0131l\u0131k her zaman paralellik anlam\u0131na gelmez.<\/p>\n

Java’da E\u015fzamanl\u0131l\u0131k ve Paralellik<\/h2>\n

Java, e\u015fzamanl\u0131 programlama i\u00e7in Thread<\/code> s\u0131n\u0131f\u0131n\u0131 ve \u00e7e\u015fitli e\u015fzamanl\u0131l\u0131k ara\u00e7lar\u0131n\u0131 (synchronized<\/code> bloklar, locks<\/code>, concurrent collections<\/code> vb.) kullan\u0131r. Thread<\/code>‘ler, i\u015fletim sistemi taraf\u0131ndan y\u00f6netilen ayr\u0131 y\u00fcr\u00fctme birimleridir. Bu, Java’da e\u015fzamanl\u0131l\u0131\u011f\u0131n y\u00f6netiminin daha karma\u015f\u0131k olabilece\u011fi anlam\u0131na gelir. Ancak, Java’n\u0131n olgun ve geni\u015f bir k\u00fct\u00fcphanesi, bu karma\u015f\u0131kl\u0131\u011f\u0131 y\u00f6netmede yard\u0131mc\u0131 olur. Java’da paralellik, genellikle ExecutorService<\/code> gibi ara\u00e7lar kullan\u0131larak ger\u00e7ekle\u015ftirilir. \u00d6rnek olarak, bir dizi i\u015flemi paralel olarak \u00e7al\u0131\u015ft\u0131rmak i\u00e7in:<\/p>\n

\nExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());\n\/\/ ... g\u00f6revleri ekle ...\nexecutor.shutdown();\n<\/code><\/pre>\n
Bu kod blo\u011fu, sistemdeki mevcut i\u015flemci \u00e7ekirdeklerinin say\u0131s\u0131 kadar thread olu\u015fturur ve g\u00f6revleri bu thread’ler aras\u0131nda payla\u015ft\u0131r\u0131r.  Ancak, bu yakla\u015f\u0131m\u0131n da thread y\u00f6netimiyle ilgili karma\u015f\u0131kl\u0131klara yol a\u00e7abilece\u011fini unutmamak \u00f6nemlidir.  Ayr\u0131ca, a\u015f\u0131r\u0131 thread olu\u015fturman\u0131n performans\u0131 olumsuz etkileyebilece\u011fini de g\u00f6z \u00f6n\u00fcnde bulundurmal\u0131y\u0131z.<\/p>\n
Golang’da E\u015fzamanl\u0131l\u0131k ve Paralellik<\/h2>\n
Golang, e\u015fzamanl\u0131 programlama i\u00e7in goroutine<\/code>‘leri kullan\u0131r.  Goroutine’ler, hafif a\u011f\u0131rl\u0131kl\u0131 thread’lerdir ve i\u015fletim sistemi thread’lerinden daha az kaynak t\u00fcketirler.  Golang’\u0131n go<\/code> anahtar kelimesi, bir fonksiyonu ayr\u0131 bir goroutine olarak \u00e7al\u0131\u015ft\u0131rmay\u0131 sa\u011flar.  Bu, e\u015fzamanl\u0131 kod yazmay\u0131 Java’ya g\u00f6re \u00e7ok daha basit ve okunabilir hale getirir.  \u00d6rnek olarak, bir fonksiyonu goroutine olarak \u00e7al\u0131\u015ft\u0131rmak i\u00e7in:<\/p>\n
\ngo myFunction()\n<\/code><\/pre>\n
Golang’\u0131n goroutine’leri,  channel<\/code>‘lar arac\u0131l\u0131\u011f\u0131yla ileti\u015fim kurar.  Channel’lar, goroutine’ler aras\u0131nda veri al\u0131\u015fveri\u015fini g\u00fcvenli ve senkronize bir \u015fekilde yapmam\u0131z\u0131 sa\u011flar.  Golang’da paralellik, goroutine’lerin ve \u00e7ok \u00e7ekirdekli i\u015flemcilerin do\u011fal uyumu sayesinde otomatik olarak ger\u00e7ekle\u015fir.  Golang’\u0131n e\u015fzamanl\u0131l\u0131k modeli, Java’ya g\u00f6re daha basit ve daha verimlidir, \u00f6zellikle de \u00e7ok say\u0131da e\u015fzamanl\u0131 g\u00f6revin oldu\u011fu durumlarda.  Ancak, daha karma\u015f\u0131k senaryolarda,  channel y\u00f6netiminin dikkatlice yap\u0131lmas\u0131 gerekir.<\/p>\n
Performans Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h2>\n
Genel olarak,  \u00e7ok say\u0131da e\u015fzamanl\u0131 g\u00f6revin oldu\u011fu senaryolarda Golang, Java’ya g\u00f6re daha iyi performans sunar.  Bu, goroutine’lerin hafif a\u011f\u0131rl\u0131kl\u0131 yap\u0131s\u0131 ve Golang’\u0131n e\u015fzamanl\u0131l\u0131k modelinin verimlili\u011finden kaynaklan\u0131r.  Ancak,  Java’n\u0131n sa\u011flam ve olgun k\u00fct\u00fcphaneleri, baz\u0131 \u00f6zel senaryolarda performans a\u00e7\u0131s\u0131ndan avantaj sa\u011flayabilir.  Performans kar\u015f\u0131la\u015ft\u0131rmas\u0131, kullan\u0131lan algoritma, veri setleri ve donan\u0131m gibi fakt\u00f6rlere ba\u011fl\u0131 olarak de\u011fi\u015febilir.  Dolay\u0131s\u0131yla,  belirli bir uygulama i\u00e7in en uygun dilin se\u00e7imi, performans testleri yap\u0131ld\u0131ktan sonra karar verilmelidir.<\/p>\n
Sonu\u00e7<\/h2>\n
Hem Java hem de Golang, g\u00fc\u00e7l\u00fc e\u015fzamanl\u0131l\u0131k ve paralellik yetenekleri sunar.  Java, daha olgun ve geni\u015f bir k\u00fct\u00fcphane sunarken, Golang daha basit ve verimli bir e\u015fzamanl\u0131l\u0131k modeli sunar.  Hangi dilin daha uygun oldu\u011fu, projenin gereksinimlerine ve geli\u015ftiricinin deneyimine ba\u011fl\u0131d\u0131r.  Benim ki\u015fisel olarak tercih etti\u011fim dil,  e\u015fzamanl\u0131 programlaman\u0131n kolayl\u0131\u011f\u0131 ve performans avantajlar\u0131 nedeniyle Golang’d\u0131r.  Ancak her iki dilin de g\u00fc\u00e7l\u00fc ve zay\u0131f y\u00f6nlerini anlamak, do\u011fru teknoloji se\u00e7iminde kritik \u00f6neme sahiptir.<\/p>\n
Daha fazla bilgi i\u00e7in fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz.  Ayr\u0131ca,  konu ile ilgili daha fazla kaynak i\u00e7in a\u015fa\u011f\u0131daki ba\u011flant\u0131lara g\u00f6z atabilirsiniz:<\/p>\n