\n\n| 400<\/td>\n | Bad Request — istek hatal\u0131<\/td>\n | G\u00f6nderilen parametreleri ve JSON format\u0131n\u0131 kontrol edin.<\/td>\n<\/tr>\n |
\n| 401<\/td>\n | Unauthorized — kimlik do\u011frulanamad\u0131<\/td>\n | API anahtar\u0131n\u0131z\u0131\/token’\u0131n\u0131z\u0131 kontrol edin, s\u00fcresi dolmu\u015f olabilir.<\/td>\n<\/tr>\n |
\n| 403<\/td>\n | Forbidden — yetki yok<\/td>\n | Anahtar\u0131n\u0131z\u0131n bu i\u015flem i\u00e7in yetkisi yok; plan\/izin ayarlar\u0131na bak\u0131n.<\/td>\n<\/tr>\n |
\n| 404<\/td>\n | Not Found — endpoint bulunamad\u0131<\/td>\n | URL’yi ve API dok\u00fcmantasyonundaki g\u00fcncel endpoint’i do\u011frulay\u0131n.<\/td>\n<\/tr>\n |
\n| 429<\/td>\n | Too Many Requests — kota a\u015f\u0131ld\u0131<\/td>\n | \u0130stek s\u0131kl\u0131\u011f\u0131n\u0131 azalt\u0131n veya daha y\u00fcksek limitli plana ge\u00e7in.<\/td>\n<\/tr>\n |
\n| 500<\/td>\n | Internal Server Error — sunucu hatas\u0131<\/td>\n | Sorun servis taraf\u0131ndad\u0131r; tekrar deneyin, s\u00fcr\u00fcyorsa sa\u011flay\u0131c\u0131ya bildirin.<\/td>\n<\/tr>\n |
\n| 503<\/td>\n | Service Unavailable — servis kapal\u0131<\/td>\n | Bak\u0131m veya a\u015f\u0131r\u0131 y\u00fck olabilir; k\u0131sa s\u00fcre sonra tekrar deneyin.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<\/span>Hangi Programlama Dillerinde API Yaz\u0131l\u0131r?<\/span><\/h2>\nAPI hemen her dille geli\u015ftirilebilir. Python (FastAPI, Django REST), h\u0131zl\u0131 geli\u015ftirme ve yapay zek\u00e2 entegrasyonlar\u0131nda; Java (Spring Boot), kurumsal ve y\u00fcksek trafikli sistemlerde; C# (ASP.NET Core Web API), Microsoft ekosisteminde; PHP (Laravel), web tabanl\u0131 projelerde ve Node.js (Express), ger\u00e7ek zamanl\u0131 uygulamalarda \u00f6ne \u00e7\u0131kar. Dil se\u00e7imi projenin ihtiyac\u0131na g\u00f6re yap\u0131l\u0131r; API’nin kalitesini dilden \u00e7ok tasar\u0131m ve dok\u00fcmantasyon belirler.<\/p>\n <\/span>API Testi Nedir?<\/span><\/h2>\nAPI testi, bir API’nin do\u011fru veri d\u00f6nd\u00fcrd\u00fc\u011f\u00fcn\u00fc, hatalara dayan\u0131kl\u0131 oldu\u011funu ve y\u00fck alt\u0131nda performans\u0131n\u0131 korudu\u011funu do\u011frulama s\u00fcrecidir. Postman ve benzeri ara\u00e7larla manuel; CI\/CD hatlar\u0131nda otomatik olarak yap\u0131l\u0131r. Yay\u0131na almadan \u00f6nce \u00f6zellikle kimlik do\u011frulama, hatal\u0131 girdi ve y\u00fcksek istek senaryolar\u0131 mutlaka test edilmelidir.<\/p>\n <\/span>API Hakk\u0131nda S\u0131k\u00e7a Sorulan Sorular<\/span><\/h2>\n<\/span>API ne demek, a\u00e7\u0131l\u0131m\u0131 nedir?<\/span><\/h3>\nAPI, “Application Programming Interface” ifadesinin k\u0131saltmas\u0131d\u0131r; T\u00fcrk\u00e7esi Uygulama Programlama Aray\u00fcz\u00fc’d\u00fcr. \u0130ki yaz\u0131l\u0131m\u0131n birbiriyle veri al\u0131\u015fveri\u015fi yapmas\u0131n\u0131 sa\u011flayan kurallar b\u00fct\u00fcn\u00fcd\u00fcr.<\/p>\n <\/span>REST API ile Web API aras\u0131ndaki fark nedir?<\/span><\/h3>\nWeb API, HTTP \u00fczerinden eri\u015filen t\u00fcm API’lerin genel ad\u0131d\u0131r; REST API ise bu ailenin en yayg\u0131n mimarisidir. Her REST API bir Web API’dir, ancak her Web API REST kurallar\u0131yla \u00e7al\u0131\u015fmak zorunda de\u011fildir.<\/p>\n <\/span>API anahtar\u0131 \u00fccretsiz mi, nereden al\u0131n\u0131r?<\/span><\/h3>\n\u00c7o\u011fu servis, geli\u015ftirici panelinden \u00fccretsiz API anahtar\u0131 verir ve belirli bir kullan\u0131m kotas\u0131 tan\u0131r. Kota a\u015f\u0131ld\u0131\u011f\u0131nda kulland\u0131k\u00e7a \u00f6de veya abonelik modeline ge\u00e7ilir.<\/p>\n <\/span>API secret nedir, API key’den fark\u0131 ne?<\/span><\/h3>\nAPI key kimli\u011finizi tan\u0131mlar, secret ise bu kimli\u011fi do\u011frular; kullan\u0131c\u0131 ad\u0131-\u015fifre ikilisi gibi d\u00fc\u015f\u00fcnebilirsiniz. Secret asla herkese a\u00e7\u0131k ortamda payla\u015f\u0131lmamal\u0131d\u0131r.<\/p>\n <\/span>API entegrasyonu nas\u0131l yap\u0131l\u0131r, ne kadar s\u00fcrer?<\/span><\/h3>\nServisin dok\u00fcmantasyonu incelenir, API anahtar\u0131 al\u0131n\u0131r, test ortam\u0131nda ba\u011flant\u0131 kurulur ve do\u011frulama sonras\u0131 canl\u0131ya ge\u00e7ilir. Haz\u0131r e-ticaret entegrasyonlar\u0131 saatler i\u00e7inde tamamlanabilirken \u00f6zel projeler birka\u00e7 hafta s\u00fcrebilir.<\/p>\n <\/span>API hatas\u0131 al\u0131yorum, ne yapmal\u0131y\u0131m?<\/span><\/h3>\n\u00d6nce d\u00f6nen HTTP koduna bak\u0131n: 401\/403 anahtar ve yetki sorunudur, 429 kota a\u015f\u0131m\u0131d\u0131r, 5xx ise servis taraf\u0131ndaki bir ar\u0131zad\u0131r. Kodu bilmek \u00e7\u00f6z\u00fcm\u00fcn yar\u0131s\u0131d\u0131r.<\/p>\n <\/span>API gateway ne i\u015fe yarar?<\/span><\/h3>\nT\u00fcm API isteklerini tek kap\u0131dan kar\u015f\u0131lar; y\u00f6nlendirme, kimlik do\u011frulama, h\u0131z s\u0131n\u0131rlama ve \u00f6nbelleklemeyi merkezi olarak y\u00f6netir. Mikroservis mimarilerinin vazge\u00e7ilmezidir.<\/p>\n <\/span>API’ler nerede \u00e7al\u0131\u015f\u0131r, hosting gerekir mi?<\/span><\/h3>\nEvet — her API bir sunucuda \u00e7al\u0131\u015f\u0131r. D\u00fc\u015f\u00fck trafikli projelerde payla\u015f\u0131ml\u0131 hosting yeterli olabilir; ancak s\u00fcrekli istek alan API’ler i\u00e7in kaynaklar\u0131 garantili bir VDS\/sanal sunucu, kararl\u0131 yan\u0131t s\u00fcresinin \u00f6n ko\u015fuludur.<\/p>\n |