Modern yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131nda, kar\u015f\u0131la\u015f\u0131lan problemlerin karma\u015f\u0131kl\u0131\u011f\u0131 her ge\u00e7en g\u00fcn artmaktad\u0131r. Basit bir “Nas\u0131l bir mimari kurard\u0131n\u0131z?” sorusu bile, tecr\u00fcbeli bir geli\u015ftiricinin y\u0131llard\u0131r edindi\u011fi al\u0131\u015fkanl\u0131klar\u0131 sorgulamas\u0131na yol a\u00e7abilir. Bu makale, tam da b\u00f6yle bir m\u00fclakat sorusunun tetikledi\u011fi mimari bir uyan\u0131\u015f\u0131 ve bu uyan\u0131\u015f\u0131n bizi Alan Odakl\u0131 Tasar\u0131m (Domain-Driven Design – DDD) felsefesine nas\u0131l y\u00f6nlendirdi\u011fini anlatmaktad\u0131r.<\/p>\n
Bir m\u00fclakat s\u0131ras\u0131nda, “\u00c7ok b\u00fcy\u00fck ve karma\u015f\u0131k bir e-ticaret sisteminin sipari\u015f y\u00f6netimi mod\u00fcl\u00fcn\u00fc nas\u0131l tasarlard\u0131n\u0131z?” sorusuyla kar\u015f\u0131la\u015ft\u0131m. \u0130lk ba\u015fta akl\u0131ma gelenler, veri taban\u0131 \u015femalar\u0131, API katmanlar\u0131 ve mikroservisler gibi teknik detaylard\u0131. Ancak m\u00fclakat\u0131 yapan ki\u015fi, “Peki, i\u015fin kendisi ne istiyor? Bu sistemin ‘sipari\u015f’ kavram\u0131 sizin i\u00e7in ne anlama geliyor?” diye derinlemesine sordu\u011funda, al\u0131\u015f\u0131lagelmi\u015f d\u00fc\u015f\u00fcnce yap\u0131m\u0131n s\u0131n\u0131rlar\u0131na ula\u015ft\u0131\u011f\u0131m\u0131 fark ettim.<\/p>\n
Geleneksel yaz\u0131l\u0131m geli\u015ftirme yakla\u015f\u0131mlar\u0131 genellikle veritaban\u0131 merkezli veya teknoloji odakl\u0131d\u0131r. \u00d6nce veritaban\u0131 \u015femas\u0131 tasarlan\u0131r, ard\u0131ndan bu \u015fema etraf\u0131nda CRUD (Create, Read, Update, Delete) operasyonlar\u0131 tan\u0131mlan\u0131r. Bu yakla\u015f\u0131m, basit uygulamalar i\u00e7in yeterli olabilirken, i\u015f s\u00fcre\u00e7lerinin karma\u015f\u0131kla\u015ft\u0131\u011f\u0131, farkl\u0131 payda\u015flar\u0131n farkl\u0131 beklentilere sahip oldu\u011fu b\u00fcy\u00fck sistemlerde yetersiz kal\u0131r. \u0130\u015f mant\u0131\u011f\u0131, farkl\u0131 katmanlara da\u011f\u0131l\u0131r, anla\u015f\u0131lmas\u0131 ve bak\u0131m\u0131 zorla\u015f\u0131r.<\/p>\n
M\u00fclakat sorusu, beni teknik detaylardan ziyade, “i\u015fin kendisi”ne odaklanmaya zorlad\u0131. Bir sipari\u015fin durumu nas\u0131l de\u011fi\u015fir? \u0130ptal edildi\u011finde veya iade edildi\u011finde hangi kurallar devreye girer? Bir sipari\u015fin “\u00f6dendi” durumu, \u00f6deme sistemleri, stok y\u00f6netimi ve m\u00fc\u015fteri hizmetleri i\u00e7in ne anlama gelir? Bu sorular, i\u015f alan\u0131n\u0131n derinlemesine anla\u015f\u0131lmas\u0131n\u0131n, sa\u011flam bir mimarinin temelini olu\u015fturdu\u011funu g\u00f6sterdi.<\/p>\n
Yaz\u0131l\u0131m, i\u015f d\u00fcnyas\u0131n\u0131n bir yans\u0131mas\u0131d\u0131r. E\u011fer yaz\u0131l\u0131m\u0131m\u0131z, temsil etti\u011fi i\u015f alan\u0131n\u0131 do\u011fru bir \u015fekilde modellemiyorsa, ka\u00e7\u0131n\u0131lmaz olarak hatalara, tutars\u0131zl\u0131klara ve s\u00fcrd\u00fcr\u00fclemez bir yap\u0131ya yol a\u00e7ar. Mimariyi yeniden d\u00fc\u015f\u00fcnmek, sadece teknik borcu azaltmakla kalmaz, ayn\u0131 zamanda i\u015f gereksinimlerine daha h\u0131zl\u0131 ve do\u011fru yan\u0131t verebilen, esnek ve anla\u015f\u0131l\u0131r sistemler in\u015fa etmemizi sa\u011flar.<\/p>\n
Alan Odakl\u0131 Tasar\u0131m (DDD), karma\u015f\u0131k i\u015f alanlar\u0131na sahip yaz\u0131l\u0131m sistemleri geli\u015ftirmek i\u00e7in bir yakla\u015f\u0131md\u0131r. Temel amac\u0131, yaz\u0131l\u0131m\u0131n, i\u015f alan\u0131n\u0131n modelini yans\u0131tmas\u0131n\u0131 sa\u011flamakt\u0131r. Bu, geli\u015ftiricilerin ve i\u015f uzmanlar\u0131n\u0131n ayn\u0131 dili konu\u015farak, i\u015fin temel mant\u0131\u011f\u0131n\u0131 yaz\u0131l\u0131ma aktarmas\u0131na olanak tan\u0131r.<\/p>\n
DDD’nin en temel prensiplerinden biri Ortak Dil’dir. Bu, i\u015f uzmanlar\u0131 ve geli\u015ftiriciler aras\u0131nda, i\u015f alan\u0131ndaki kavramlar\u0131 tan\u0131mlamak i\u00e7in kullan\u0131lan ortak bir terimler setidir. Bu dil, kodda, dok\u00fcmantasyonda ve t\u00fcm ileti\u015fimde tutarl\u0131 bir \u015fekilde kullan\u0131l\u0131r. \u00d6rne\u011fin, bir e-ticaret sisteminde “sepet”, “sipari\u015f”, “\u00fcr\u00fcn” gibi terimlerin herkes i\u00e7in ayn\u0131 anlama gelmesi sa\u011flan\u0131r.<\/p>\n
B\u00fcy\u00fck ve karma\u015f\u0131k i\u015f alanlar\u0131 genellikle farkl\u0131 alt alanlara ayr\u0131labilir. Her bir alt alan\u0131n kendi i\u00e7inde tutarl\u0131 bir modeli ve Ortak Dili olabilir. S\u0131n\u0131rl\u0131 Ba\u011flam, bu alt alanlar\u0131 tan\u0131mlar ve her birinin kendi modelini ve dilini izole eder. \u00d6rne\u011fin, bir e-ticaret sisteminde “Sipari\u015f Y\u00f6netimi”, “Stok Y\u00f6netimi” ve “M\u00fc\u015fteri \u0130li\u015fkileri” farkl\u0131 S\u0131n\u0131rl\u0131 Ba\u011flamlar olabilir. Bu, modellerin birbirine kar\u0131\u015fmas\u0131n\u0131 \u00f6nler ve her bir ba\u011flam\u0131n kendi i\u00e7inde tutarl\u0131 kalmas\u0131n\u0131 sa\u011flar.<\/p>\n
Etki Alan\u0131 Modeli, i\u015f alan\u0131n\u0131n temel kavramlar\u0131n\u0131, davran\u0131\u015flar\u0131n\u0131 ve ili\u015fkilerini temsil eden bir nesne modelidir. Bu model, i\u015f kurallar\u0131n\u0131 ve mant\u0131\u011f\u0131n\u0131 i\u00e7erir ve genellikle zengin bir nesne yap\u0131s\u0131na sahiptir. DDD’de, Etki Alan\u0131 Modeli, uygulaman\u0131n kalbidir ve i\u015fin kendisini en do\u011fru \u015fekilde yans\u0131tmaya \u00e7al\u0131\u015f\u0131r.<\/p>\n
DDD, genellikle Katmanl\u0131 Mimari ile birlikte kullan\u0131l\u0131r. Bu mimari, uygulaman\u0131n farkl\u0131 sorumluluklar\u0131n\u0131 ayr\u0131 katmanlara ay\u0131r\u0131r:<\/p>\n
Bu katmanlama, sorumluluklar\u0131n ayr\u0131lmas\u0131n\u0131 sa\u011flar ve Etki Alan\u0131 Katman\u0131’n\u0131n di\u011fer katmanlardan ba\u011f\u0131ms\u0131z kalmas\u0131na yard\u0131mc\u0131 olur.<\/p>\n
DDD, Etki Alan\u0131 Modelini olu\u015fturmak i\u00e7in \u00e7e\u015fitli yap\u0131 ta\u015flar\u0131 sunar. Bu yap\u0131 ta\u015flar\u0131, i\u015f mant\u0131\u011f\u0131n\u0131 kodda daha net ve ifade edici bir \u015fekilde temsil etmemizi sa\u011flar.<\/p>\n
Varl\u0131klar, benzersiz bir kimli\u011fe sahip olan ve ya\u015fam d\u00f6ng\u00fcs\u00fc boyunca bu kimli\u011fi koruyan nesnelerdir. Kimlikleri, niteliklerinden daha \u00f6nemlidir. \u00d6rne\u011fin, bir “M\u00fc\u015fteri” veya “Sipari\u015f” bir varl\u0131kt\u0131r.<\/p>\n
\npublic class Siparis\n{\n public Guid Id { get; private set; }\n public DateTime SiparisTarihi { get; private set; }\n public SiparisDurumu Durum { get; private set; }\n public List Kalemler { get; private set; }\n\n public Siparis(Guid id, DateTime siparisTarihi)\n {\n Id = id;\n SiparisTarihi = siparisTarihi;\n Durum = SiparisDurumu.Olusturuldu;\n Kalemler = new List();\n }\n\n public void SiparisDurumunuGuncelle(SiparisDurumu yeniDurum)\n {\n \/\/ \u0130\u015f kurallar\u0131 burada uygulan\u0131r\n if (Durum == SiparisDurumu.IptalEdildi)\n {\n throw new InvalidOperationException(\"\u0130ptal edilmi\u015f sipari\u015fin durumu de\u011fi\u015ftirilemez.\");\n }\n Durum = yeniDurum;\n }\n}\n<\/pre>\n<\/code><\/p>\n
De\u011fer Nesneleri (Value Objects)<\/h4>\n
De\u011fer Nesneleri, bir kimli\u011fi olmayan, sadece niteliklerinin de\u011feriyle tan\u0131mlanan nesnelerdir. Genellikle de\u011fi\u015fmez (immutable) olurlar. \u00d6rne\u011fin, bir \"Adres\", \"Para Birimi\" veya \"Miktar\" bir de\u011fer nesnesi olabilir.<\/p>\n
\npublic class Adres\n{\n public string Sokak { get; private set; }\n public string Sehir { get; private set; }\n public string PostaKodu { get; private set; }\n\n public Adres(string sokak, string sehir, string postaKodu)\n {\n Sokak = sokak;\n Sehir = sehir;\n PostaKodu = postaKodu;\n }\n\n \/\/ De\u011fer nesneleri i\u00e7in e\u015fitlik kar\u015f\u0131la\u015ft\u0131rmas\u0131 de\u011ferlere g\u00f6re yap\u0131l\u0131r.\n public override bool Equals(object obj)\n {\n if (obj is Adres other)\n {\n return Sokak == other.Sokak && Sehir == other.Sehir && PostaKodu == other.PostaKodu;\n }\n return false;\n }\n\n public override int GetHashCode()\n {\n return HashCode.Combine(Sokak, Sehir, PostaKodu);\n }\n}\n<\/pre>\n<\/code><\/p>\n
Agregalar (Aggregates)<\/h4>\n
Agregalar, bir veya daha fazla varl\u0131k ve de\u011fer nesnesini i\u00e7eren, tutarl\u0131l\u0131k s\u0131n\u0131rlar\u0131n\u0131 tan\u0131mlayan bir k\u00fcmedir. Her agregan\u0131n bir k\u00f6k varl\u0131\u011f\u0131 (Aggregate Root) bulunur ve d\u0131\u015far\u0131dan yaln\u0131zca bu k\u00f6k varl\u0131k arac\u0131l\u0131\u011f\u0131yla eri\u015filir. Bu, agregate i\u00e7indeki nesnelerin tutarl\u0131l\u0131\u011f\u0131n\u0131 korumay\u0131 sa\u011flar. \u00d6rne\u011fin, bir \"Sipari\u015f\" ve ona ba\u011fl\u0131 \"Sipari\u015f Kalemleri\" bir agregan\u0131n par\u00e7as\u0131 olabilir. \"Sipari\u015f\" burada Aggregate Root'tur.<\/p>\n
Etki Alan\u0131 Hizmetleri (Domain Services)<\/h4>\n
Etki Alan\u0131 Hizmetleri, belirli bir varl\u0131\u011fa veya de\u011fer nesnesine do\u011fal olarak uymayan, ancak i\u015f alan\u0131n\u0131n \u00f6nemli bir par\u00e7as\u0131 olan operasyonlar\u0131 veya i\u015f mant\u0131\u011f\u0131n\u0131 bar\u0131nd\u0131r\u0131r. \u00d6rne\u011fin, farkl\u0131 para birimleri aras\u0131nda d\u00f6n\u00fc\u015f\u00fcm yapan bir hizmet veya bir sipari\u015fin birden fazla kurala g\u00f6re onaylanmas\u0131 gibi.<\/p>\n
Depolar (Repositories)<\/h4>\n
Depolar, agregate k\u00f6klerinin depolanmas\u0131, al\u0131nmas\u0131 ve y\u00f6netilmesi i\u00e7in bir soyutlama sa\u011flar. Etki Alan\u0131 Katman\u0131'n\u0131n, veritaban\u0131 gibi altyap\u0131 detaylar\u0131ndan ba\u011f\u0131ms\u0131z kalmas\u0131na yard\u0131mc\u0131 olur. Bir depo, bir agregate'i bellekten veya kal\u0131c\u0131 depolamadan getirip kaydetmekten sorumludur.<\/p>\n
Etki Alan\u0131 Olaylar\u0131 (Domain Events)<\/h4>\n
Etki Alan\u0131 Olaylar\u0131, bir agregate i\u00e7inde veya i\u015f alan\u0131nda meydana gelen \u00f6nemli olaylar\u0131 temsil eder. Bu olaylar, sistemin di\u011fer b\u00f6l\u00fcmlerinin veya farkl\u0131 S\u0131n\u0131rl\u0131 Ba\u011flamlar\u0131n bu de\u011fi\u015fikliklere tepki vermesini sa\u011flar. \u00d6rne\u011fin, \"Sipari\u015f Olu\u015fturuldu\", \"\u00d6deme Ba\u015far\u0131l\u0131\", \"\u00dcr\u00fcn Sto\u011fu G\u00fcncellendi\" gibi olaylar.<\/p>\n
DDD Uygulama Stratejileri<\/h3>\n
DDD, sadece taktiksel yap\u0131 ta\u015flar\u0131 sunmakla kalmaz, ayn\u0131 zamanda karma\u015f\u0131k sistemleri y\u00f6netmek i\u00e7in stratejik yakla\u015f\u0131mlar da sa\u011flar.<\/p>\n
Stratejik Tasar\u0131m<\/h4>\n
Stratejik tasar\u0131m, b\u00fcy\u00fck bir i\u015f alan\u0131n\u0131 daha k\u00fc\u00e7\u00fck, y\u00f6netilebilir S\u0131n\u0131rl\u0131 Ba\u011flamlara ay\u0131rmay\u0131 ve bu ba\u011flamlar aras\u0131ndaki ili\u015fkileri tan\u0131mlamay\u0131 i\u00e7erir. Bu, i\u015f alan\u0131n\u0131n genel bir haritas\u0131n\u0131 \u00e7\u0131karmak ve her bir ba\u011flam\u0131n kapsam\u0131n\u0131 belirlemek anlam\u0131na gelir.<\/p>\n
Taktiksel Tasar\u0131m<\/h4>\n
Taktiksel tasar\u0131m, belirli bir S\u0131n\u0131rl\u0131 Ba\u011flam i\u00e7indeki Etki Alan\u0131 Modelini olu\u015fturmak i\u00e7in Varl\u0131klar, De\u011fer Nesneleri, Agregalar, Depolar ve Etki Alan\u0131 Hizmetleri gibi yap\u0131 ta\u015flar\u0131n\u0131 kullanmay\u0131 i\u00e7erir. Bu, kod seviyesinde i\u015f mant\u0131\u011f\u0131n\u0131 ifade etme s\u00fcrecidir.<\/p>\n
Ba\u011flam Haritalar\u0131 (Context Maps)<\/h4>\n
Ba\u011flam Haritalar\u0131, farkl\u0131 S\u0131n\u0131rl\u0131 Ba\u011flamlar aras\u0131ndaki ili\u015fkileri ve entegrasyon stratejilerini g\u00f6rselle\u015ftiren bir ara\u00e7t\u0131r. Bu haritalar, ekiplerin farkl\u0131 sistemlerin nas\u0131l etkile\u015fim kurdu\u011funu anlamas\u0131na yard\u0131mc\u0131 olur ve entegrasyon sorunlar\u0131n\u0131 \u00f6nceden tespit etmeyi sa\u011flar.<\/p>\n
\n\n\n\u0130li\u015fki Tipi<\/th>\n A\u00e7\u0131klama<\/th>\n<\/tr>\n<\/thead>\n \n\nOrtak \u00c7ekirdek (Shared Kernel)<\/td>\n \u0130ki ba\u011flam\u0131n ortak bir kod taban\u0131n\u0131 veya modeli payla\u015ft\u0131\u011f\u0131 durum.<\/td>\n<\/tr>\n \nM\u00fc\u015fteri\/Tedarik\u00e7i (Customer\/Supplier)<\/td>\n Bir ba\u011flam\u0131n (m\u00fc\u015fteri) di\u011fer bir ba\u011flam\u0131n (tedarik\u00e7i) sa\u011flad\u0131\u011f\u0131 hizmetlere ba\u011f\u0131ml\u0131 oldu\u011fu durum.<\/td>\n<\/tr>\n \nUyarlan\u0131c\u0131 (Conformist)<\/td>\n Bir ba\u011flam\u0131n, di\u011fer bir ba\u011flam\u0131n modelini oldu\u011fu gibi kabul etti\u011fi durum.<\/td>\n<\/tr>\n \nAyr\u0131 Yollar (Separate Ways)<\/td>\n \u0130ki ba\u011flam\u0131n tamamen ba\u011f\u0131ms\u0131z oldu\u011fu ve entegrasyon gerektirmedi\u011fi durum.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nDDD'nin Avantajlar\u0131 ve Zorluklar\u0131<\/h3>\n
Her mimari yakla\u015f\u0131m gibi, DDD'nin de kendine \u00f6zg\u00fc avantajlar\u0131 ve zorluklar\u0131 vard\u0131r.<\/p>\n
Avantajlar: Esneklik, Anla\u015f\u0131l\u0131rl\u0131k, Bak\u0131m Kolayl\u0131\u011f\u0131<\/h4>\n\n- Daha \u0130yi \u0130\u015f Anlay\u0131\u015f\u0131:<\/strong> \u0130\u015f uzmanlar\u0131 ve geli\u015ftiriciler aras\u0131nda ortak bir dil ve model olu\u015fturarak i\u015f alan\u0131n\u0131n daha derinlemesine anla\u015f\u0131lmas\u0131n\u0131 sa\u011flar.<\/li>\n
- Esneklik ve De\u011fi\u015fime Diren\u00e7:<\/strong> \u0130\u015f kurallar\u0131 ve mant\u0131\u011f\u0131 merkezi bir yerde topland\u0131\u011f\u0131 i\u00e7in, i\u015f gereksinimlerindeki de\u011fi\u015fikliklere daha kolay adapte olunabilir.<\/li>\n
- Daha Temiz ve S\u00fcrd\u00fcr\u00fclebilir Kod:<\/strong> \u0130\u015f mant\u0131\u011f\u0131n\u0131n altyap\u0131 detaylar\u0131ndan ayr\u0131lmas\u0131, daha okunabilir, test edilebilir ve bak\u0131m\u0131 kolay kod yazmay\u0131 te\u015fvik eder.<\/li>\n
- Daha Az Teknik Bor\u00e7:<\/strong> \u0130\u015f alan\u0131n\u0131 do\u011fru modelleyerek, ileride ortaya \u00e7\u0131kabilecek tutars\u0131zl\u0131klar\u0131 ve yeniden yazma ihtiya\u00e7lar\u0131n\u0131 azalt\u0131r.<\/li>\n<\/ul>\n
Zorluklar: \u00d6\u011frenme E\u011frisi, Ba\u015flang\u0131\u00e7 Maliyeti<\/h4>\n\n- Y\u00fcksek \u00d6\u011frenme E\u011frisi:<\/strong> DDD kavramlar\u0131 ba\u015flang\u0131\u00e7ta karma\u015f\u0131k gelebilir ve ekiplerin bu felsefeyi benimsemesi zaman alabilir.<\/li>\n
- Ba\u015flang\u0131\u00e7 Maliyeti:<\/strong> \u0130lk kurulum ve tasar\u0131m a\u015famalar\u0131, geleneksel yakla\u015f\u0131mlara g\u00f6re daha fazla zaman ve efor gerektirebilir.<\/li>\n
- A\u015f\u0131r\u0131 M\u00fchendislik Riski:<\/strong> Basit projelerde DDD'nin t\u00fcm prensiplerini uygulamaya \u00e7al\u0131\u015fmak, gereksiz karma\u015f\u0131kl\u0131\u011fa yol a\u00e7abilir.<\/li>\n<\/ul>\n
Ne Zaman Kullan\u0131lmal\u0131?<\/h4>\n
DDD, \u00f6zellikle a\u015fa\u011f\u0131daki durumlarda de\u011ferini g\u00f6sterir:<\/p>\n
\n- \u0130\u015f alan\u0131n\u0131n karma\u015f\u0131k oldu\u011fu ve s\u00fcrekli de\u011fi\u015fen gereksinimlere sahip oldu\u011fu projeler.<\/li>\n
- \u0130\u015f uzmanlar\u0131 ve geli\u015ftiriciler aras\u0131nda yak\u0131n i\u015fbirli\u011finin kritik oldu\u011fu durumlar.<\/li>\n
- Uzun vadeli bak\u0131m ve s\u00fcrd\u00fcr\u00fclebilirlik gerektiren b\u00fcy\u00fck \u00f6l\u00e7ekli sistemler.<\/li>\n<\/ul>\n
Ger\u00e7ek D\u00fcnya Senaryolar\u0131nda DDD<\/h3>\n
DDD, \u00e7e\u015fitli sekt\u00f6rlerde ve uygulama t\u00fcrlerinde ba\u015far\u0131l\u0131 bir \u015fekilde uygulanabilir.<\/p>\n
E-ticaret Uygulamas\u0131 \u00d6rne\u011fi<\/h4>\n
Bir e-ticaret uygulamas\u0131nda, \"Sipari\u015f\", \"\u00dcr\u00fcn\", \"M\u00fc\u015fteri\", \"\u00d6deme\" gibi kavramlar farkl\u0131 S\u0131n\u0131rl\u0131 Ba\u011flamlar olarak modellenebilir. Her bir ba\u011flam\u0131n kendi i\u00e7inde tutarl\u0131 bir modeli ve i\u015f kurallar\u0131 bulunur. \u00d6rne\u011fin, \"Sipari\u015f Y\u00f6netimi\" ba\u011flam\u0131, sipari\u015fin durum ge\u00e7i\u015flerini, indirim kurallar\u0131n\u0131 ve iade s\u00fcre\u00e7lerini y\u00f6netirken, \"Stok Y\u00f6netimi\" ba\u011flam\u0131 \u00fcr\u00fcnlerin stok seviyelerini ve rezerve i\u015flemlerini ele al\u0131r. Bu ba\u011flamlar, Etki Alan\u0131 Olaylar\u0131 arac\u0131l\u0131\u011f\u0131yla birbirleriyle etkile\u015fime girer.<\/p>\n
Finansal Sistem \u00d6rne\u011fi<\/h4>\n
Finansal sistemler, genellikle y\u00fcksek d\u00fczeyde karma\u015f\u0131k i\u015f kurallar\u0131 ve s\u0131k\u0131 tutarl\u0131l\u0131k gereksinimleri i\u00e7erir. \"Hesap\", \"\u0130\u015flem\", \"Bakiye\", \"D\u00f6viz Kuru\" gibi kavramlar, DDD prensipleriyle modellenerek sistemin g\u00fcvenilirli\u011fi ve do\u011frulu\u011fu art\u0131r\u0131labilir. \u00d6rne\u011fin, bir \"Hesap\" agregate'i, hesab\u0131n bakiyesini ve i\u015flem ge\u00e7mi\u015fini tutarl\u0131l\u0131k i\u00e7inde y\u00f6netebilir.<\/p>\n
Mikroservisler ve DDD<\/h4>\n
DDD ve mikroservis mimarisi birbirini m\u00fckemmel \u015fekilde tamamlar. Her bir S\u0131n\u0131rl\u0131 Ba\u011flam, do\u011fal olarak bir mikroservis s\u0131n\u0131r\u0131 olarak d\u00fc\u015f\u00fcn\u00fclebilir. Bu, her mikroservisin kendi Etki Alan\u0131 Modelini ve Ortak Dilini geli\u015ftirmesine olanak tan\u0131r, b\u00f6ylece ba\u011f\u0131ms\u0131z olarak geli\u015ftirilebilir, da\u011f\u0131t\u0131labilir ve \u00f6l\u00e7eklenebilir hale gelir.<\/p>\n
Sonu\u00e7<\/h3>\n
O m\u00fclakat sorusu, benim i\u00e7in sadece bir i\u015f g\u00f6r\u00fc\u015fmesi de\u011fil, ayn\u0131 zamanda yaz\u0131l\u0131m mimarisine bak\u0131\u015f a\u00e7\u0131m\u0131 k\u00f6kten de\u011fi\u015ftiren bir d\u00f6n\u00fcm noktas\u0131 oldu. Alan Odakl\u0131 Tasar\u0131m, teknik detaylara bo\u011fulmadan \u00f6nce i\u015fin kendisini anlaman\u0131n ve bu anlay\u0131\u015f\u0131 kodumuza yans\u0131tman\u0131n ne kadar kritik oldu\u011funu g\u00f6sterdi. DDD, karma\u015f\u0131k i\u015f alanlar\u0131n\u0131 y\u00f6netmek i\u00e7in sadece bir dizi teknik kal\u0131p de\u011fil, ayn\u0131 zamanda bir d\u00fc\u015f\u00fcnce bi\u00e7imi ve i\u015f uzmanlar\u0131yla daha derin bir i\u015fbirli\u011fi k\u00fclt\u00fcr\u00fc sunar. Bu felsefeyi benimsemek, daha esnek, s\u00fcrd\u00fcr\u00fclebilir ve i\u015f de\u011ferine odakl\u0131 yaz\u0131l\u0131mlar geli\u015ftirmemizi sa\u011flar.<\/p>\n
SSS (S\u0131k Sorulan Sorular)<\/h3>\n
S: DDD her proje i\u00e7in uygun mudur?<\/strong><\/p>\nC: Hay\u0131r, DDD \u00f6zellikle karma\u015f\u0131k i\u015f alanlar\u0131na sahip, uzun \u00f6m\u00fcrl\u00fc ve de\u011fi\u015fime a\u00e7\u0131k sistemler i\u00e7in en uygunudur. Basit CRUD uygulamalar\u0131 veya \u00e7ok k\u00fc\u00e7\u00fck projeler i\u00e7in a\u015f\u0131r\u0131 m\u00fchendislik olabilir.<\/p>\n
S: Ortak Dil'i nas\u0131l olu\u015ftururuz?<\/strong><\/p>\nC: Ortak Dil, i\u015f uzmanlar\u0131 ve geli\u015ftiricilerin s\u00fcrekli ileti\u015fim ve i\u015fbirli\u011fi i\u00e7inde olmas\u0131yla zamanla geli\u015fir. \u0130\u015f toplant\u0131lar\u0131nda, tasar\u0131m tart\u0131\u015fmalar\u0131nda ve kod incelemelerinde kullan\u0131lan terimlerin tutarl\u0131 olmas\u0131na \u00f6zen g\u00f6sterilmelidir.<\/p>\n
S: Agregalar neden bu kadar \u00f6nemli?<\/strong><\/p>\nC: Agregalar, veri tutarl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flamak i\u00e7in kritik \u00f6neme sahiptir. Bir agregate'in k\u00f6k varl\u0131\u011f\u0131 arac\u0131l\u0131\u011f\u0131yla eri\u015filmesi, agregate i\u00e7indeki t\u00fcm nesnelerin tek bir i\u015flem birimi i\u00e7inde tutarl\u0131 kalmas\u0131n\u0131 garanti eder.<\/p>\n
S: DDD, mikroservis mimarisiyle nas\u0131l ili\u015fkilidir?<\/strong><\/p>\nC: DDD'deki S\u0131n\u0131rl\u0131 Ba\u011flamlar, mikroservislerin do\u011fal s\u0131n\u0131rlar\u0131n\u0131 belirlemek i\u00e7in harika bir yoldur. Her bir S\u0131n\u0131rl\u0131 Ba\u011flam, kendi Etki Alan\u0131 Modeline sahip ba\u011f\u0131ms\u0131z bir mikroservis olarak geli\u015ftirilebilir, bu da mikroservislerin avantajlar\u0131ndan (ba\u011f\u0131ms\u0131z da\u011f\u0131t\u0131m, \u00f6l\u00e7eklenebilirlik) tam olarak yararlanmay\u0131 sa\u011flar.<\/p>\n","protected":false},"excerpt":{"rendered":"S: DDD her proje i\u00e7in uygun mudur?","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-36656","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\n
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