{"id":15018,"date":"2025-03-13T03:45:13","date_gmt":"2025-03-13T00:45:13","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/"},"modified":"2025-03-13T03:45:13","modified_gmt":"2025-03-13T00:45:13","slug":"singleton-anti-desen-mi-yoksa-cozum-mu","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/","title":{"rendered":"Singleton: Anti-Desen mi, Yoksa \u00c7\u00f6z\u00fcm m\u00fc?"},"content":{"rendered":"

<\/p>\n

Singleton: Anti-Desen mi, Yoksa \u00c7\u00f6z\u00fcm m\u00fc?<\/p>\n

Singleton tasar\u0131m deseni, bir s\u0131n\u0131f\u0131n yaln\u0131zca bir \u00f6rne\u011finin olu\u015fturulmas\u0131n\u0131 sa\u011flayan ve bu \u00f6rne\u011fe global bir eri\u015fim noktas\u0131 sunan pop\u00fcler bir tasar\u0131m deseni olarak bilinir. Ancak, geni\u015f \u00e7apta kullan\u0131m\u0131yla beraber, baz\u0131 durumlarda ciddi sorunlara yol a\u00e7abilece\u011fi i\u00e7in “anti-desen” olarak nitelendirildi\u011fi de s\u0131k\u00e7a g\u00f6r\u00fcl\u00fcr. Bu makalede, Singleton deseninin hem avantajlar\u0131n\u0131 hem de dezavantajlar\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. Ayr\u0131ca, alternatif \u00e7\u00f6z\u00fcmler ve daha iyi uygulamalar hakk\u0131nda da bilgi verece\u011fiz.<\/p>\n

Singleton’\u0131n Avantajlar\u0131<\/h2>\n

Singleton’\u0131n en b\u00fcy\u00fck avantaj\u0131, tek bir kaynak noktas\u0131 olu\u015fturmas\u0131d\u0131r. Bu sayede, uygulaman\u0131zdaki t\u00fcm bile\u015fenler ayn\u0131 veriye eri\u015febilir ve bu veriyi kolayca payla\u015fabilirler. \u00d6rne\u011fin, bir veritaban\u0131 ba\u011flant\u0131s\u0131 y\u00f6netmek veya bir konfig\u00fcrasyon dosyas\u0131n\u0131 okumak i\u00e7in Singleton kullan\u0131\u015fl\u0131 olabilir. Bu durum, tek bir kaynak \u00fczerinden yap\u0131lan eri\u015fimi garantileyerek kaynak y\u00f6netimini basitle\u015ftirir.<\/p>\n

Singleton’\u0131n Dezavantajlar\u0131 ve Anti-Desen Olma Durumu<\/h2>\n

Singleton’\u0131n dezavantajlar\u0131, avantajlar\u0131na g\u00f6re daha a\u011f\u0131r basmaktad\u0131r. En b\u00fcy\u00fck sorun, test edilebilirli\u011fin zorla\u015fmas\u0131d\u0131r. Singleton’lar, global bir durum olu\u015ftururlar ve bu durum, birim testlerini karma\u015f\u0131kla\u015ft\u0131r\u0131r. \u00c7\u00fcnk\u00fc, her test \u00e7al\u0131\u015fmas\u0131, global durumu etkileyebilir ve di\u011fer test sonu\u00e7lar\u0131n\u0131 bozabilir. Ayr\u0131ca, Singleton’lar, ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu gibi daha iyi uygulamalar\u0131n kullan\u0131lmas\u0131n\u0131 zorla\u015ft\u0131r\u0131r. Bununla birlikte, sistem mimarisinde y\u00fcksek oranda birle\u015fmeye sebep olurlar.<\/p>\n

Dahas\u0131, Singleton’lar genellikle tek bir noktadan ba\u015far\u0131s\u0131zl\u0131\u011fa (single point of failure) yol a\u00e7arlar. E\u011fer Singleton s\u0131n\u0131f\u0131nda bir hata olu\u015fursa, t\u00fcm uygulama etkilenir. Y\u00fcksek oranda birle\u015fme nedeniyle, sistemin di\u011fer k\u0131s\u0131mlar\u0131na eri\u015fim ve modifikasyonlar\u0131 zorla\u015fmaktad\u0131r. Bu da bak\u0131m\u0131 ve \u00f6l\u00e7eklenebilirli\u011fi zorla\u015ft\u0131r\u0131r. Bu sebeplerden dolay\u0131, bir\u00e7ok geli\u015ftirici Singleton’\u0131 anti-desen olarak g\u00f6rmektedir. <\/p>\n

Alternatif \u00c7\u00f6z\u00fcmler<\/h2>\n

Singleton’a alternatif olarak, ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu (Dependency Injection) kullan\u0131lmas\u0131 \u00f6nerilir. Ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu, s\u0131n\u0131flar\u0131n ba\u011f\u0131ml\u0131l\u0131klar\u0131n\u0131 d\u0131\u015far\u0131dan almas\u0131n\u0131 sa\u011flar. Bu sayede, s\u0131n\u0131flar birbirlerine ba\u011fl\u0131 kalmaz ve test edilebilirlik artar. Ayr\u0131ca, ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu, s\u0131n\u0131flar\u0131n daha mod\u00fcler ve yeniden kullan\u0131labilir olmas\u0131n\u0131 sa\u011flar.<\/p>\n

Di\u011fer bir alternatif ise, factory metodlar\u0131d\u0131r. Factory metodlar\u0131, s\u0131n\u0131flar\u0131n olu\u015fturulmas\u0131n\u0131 soyutlar ve farkl\u0131 s\u0131n\u0131f \u00f6rneklerini \u00fcretmek i\u00e7in kullan\u0131labilir. Bu sayede, Singleton’\u0131n global durumu sorunundan ka\u00e7\u0131n\u0131labilir.<\/p>\n

Sonu\u00e7<\/h2>\n

Singleton, baz\u0131 durumlarda kullan\u0131\u015fl\u0131 olsa da, genellikle anti-desen olarak kabul edilir. Test edilebilirlik sorunlar\u0131, global durum ve bak\u0131m\u0131 zorluklar\u0131 nedeniyle, ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu veya factory metodlar\u0131 gibi alternatifleri tercih etmek daha uygundur. Uygulaman\u0131z\u0131n ihtiya\u00e7lar\u0131n\u0131 dikkatlice de\u011ferlendirin ve do\u011fru tasar\u0131m desenini se\u00e7in. Daha fazla bilgi i\u00e7in fatihsoysal.com<\/a> sitesini ziyaret edebilirsiniz. <\/p>\n

Ayr\u0131ca, konuyla ilgili daha detayl\u0131 bilgi i\u00e7in \u015fu kayna\u011fa g\u00f6z atabilirsiniz: Singleton – Anti-Pattern? (\u0130ngilizce)<\/a><\/p>\n

#Etiketler: Singleton, tasar\u0131m deseni, anti-desen, yaz\u0131l\u0131m geli\u015ftirme, yaz\u0131l\u0131m mimarisi, test edilebilirlik, ba\u011f\u0131ml\u0131l\u0131k enjeksiyonu, global durum, tek noktadan ba\u015far\u0131s\u0131zl\u0131k, factory metodlar\u0131, fatihsoysal.com<\/p>\n

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Bu makalede, Singleton deseninin hem avantajlar\u0131n\u0131 hem de dezavantajlar\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. Ayr\u0131ca, alternatif \u00e7\u00f6z\u00fcmler ve daha iyi uygulamalar hakk\u0131nda da bilgi verece\u011fiz.","og_url":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/","og_site_name":"Kodlar\u0131n Gizemli D\u00fcnyas\u0131","article_published_time":"2025-03-13T00:45:13+00:00","author":"Fatih Soysal","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Fatih Soysal","Tahmini okuma s\u00fcresi":"3 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/#article","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/"},"author":{"name":"Fatih Soysal","@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"headline":"Singleton: Anti-Desen mi, Yoksa \u00c7\u00f6z\u00fcm m\u00fc?","datePublished":"2025-03-13T00:45:13+00:00","mainEntityOfPage":{"@id":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/"},"wordCount":590,"commentCount":0,"publisher":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/#respond"]}],"copyrightYear":"2025","copyrightHolder":{"@id":"https:\/\/fatihsoysal.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/","url":"https:\/\/fatihsoysal.com\/blog\/singleton-anti-desen-mi-yoksa-cozum-mu\/","name":"Singleton: Anti-Desen mi, Yoksa \u00c7\u00f6z\u00fcm m\u00fc?","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/#website"},"datePublished":"2025-03-13T00:45:13+00:00","description":"Singleton tasar\u0131m deseni, bir s\u0131n\u0131f\u0131n yaln\u0131zca bir \u00f6rne\u011finin olu\u015fturulmas\u0131n\u0131 sa\u011flayan ve bu \u00f6rne\u011fe global bir eri\u015fim noktas\u0131 sunan pop\u00fcler bir tasar\u0131m deseni olarak bilinir. Ancak, geni\u015f \u00e7apta kullan\u0131m\u0131yla beraber, baz\u0131 durumlarda ciddi sorunlara yol a\u00e7abilece\u011fi i\u00e7in \"anti-desen\" olarak nitelendirildi\u011fi de s\u0131k\u00e7a g\u00f6r\u00fcl\u00fcr. Bu makalede, Singleton deseninin hem avantajlar\u0131n\u0131 hem de dezavantajlar\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. 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