{"id":36590,"date":"2025-12-20T09:00:41","date_gmt":"2025-12-20T06:00:41","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/gonun-net-http-paketi-ile-yuksek-performansli-http-sunuculari-olusturma\/"},"modified":"2025-12-20T09:00:41","modified_gmt":"2025-12-20T06:00:41","slug":"gonun-net-http-paketi-ile-yuksek-performansli-http-sunuculari-olusturma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/gonun-net-http-paketi-ile-yuksek-performansli-http-sunuculari-olusturma\/","title":{"rendered":"Go’nun net\/http Paketi ile Y\u00fcksek Performansl\u0131 HTTP Sunucular\u0131 Olu\u015fturma"},"content":{"rendered":"

Go’nun net\/http Paketi ile Y\u00fcksek Performansl\u0131 HTTP Sunucular\u0131 Olu\u015fturma<\/h2>\n

Go programlama dili, e\u015fzamanl\u0131l\u0131k ve performans odakl\u0131 tasar\u0131m\u0131 sayesinde modern web servisleri ve API’ler geli\u015ftirmek i\u00e7in pop\u00fcler bir tercih haline gelmi\u015ftir. Go’nun standart k\u00fct\u00fcphanesinde yer alan net\/http<\/code> paketi, d\u0131\u015far\u0131dan herhangi bir ba\u011f\u0131ml\u0131l\u0131\u011fa ihtiya\u00e7 duymadan g\u00fc\u00e7l\u00fc ve \u00f6l\u00e7eklenebilir HTTP sunucular\u0131 olu\u015fturmak i\u00e7in gereken t\u00fcm temel yap\u0131 ta\u015flar\u0131n\u0131 sunar. Bu makalede, net\/http<\/code> paketinin sundu\u011fu imkanlar\u0131 derinlemesine inceleyerek, y\u00fcksek performansl\u0131 ve dayan\u0131kl\u0131 HTTP sunucular\u0131 nas\u0131l in\u015fa edebilece\u011fimizi, optimizasyon tekniklerini ve en iyi uygulamalar\u0131 ele alaca\u011f\u0131z.<\/p>\n

1. Go ve net\/http Paketinin Temelleri<\/h2>\n

Go’nun net\/http<\/code> paketi, basit bir HTTP sunucusu olu\u015fturmaktan, karma\u015f\u0131k routing, middleware ve hata y\u00f6netimi stratejilerine kadar geni\u015f bir yelpazede \u00e7\u00f6z\u00fcm sunar. Go’nun e\u015fzamanl\u0131l\u0131k modeli sayesinde, net\/http<\/code> ile olu\u015fturulan sunucular, kutudan \u00e7\u0131kt\u0131\u011f\u0131 haliyle bile y\u00fcksek e\u015fzamanl\u0131 ba\u011flant\u0131lar\u0131 kolayca y\u00f6netebilir.<\/p>\n

Go’nun E\u015fzamanl\u0131l\u0131k Modeli<\/h3>\n

Go, hafif thread’ler olan “goroutine”ler ve bunlar aras\u0131nda g\u00fcvenli ileti\u015fim sa\u011flayan “channel”lar arac\u0131l\u0131\u011f\u0131yla e\u015fzamanl\u0131l\u0131\u011f\u0131 ele al\u0131r. Bir HTTP iste\u011fi geldi\u011finde, net\/http<\/code> paketi her istek i\u00e7in otomatik olarak yeni bir goroutine ba\u015flat\u0131r. Bu sayede, bir iste\u011fin i\u015flenmesi di\u011fer istekleri engellemez ve sunucu ayn\u0131 anda binlerce ba\u011flant\u0131y\u0131 verimli bir \u015fekilde y\u00f6netebilir. Bu model, I\/O yo\u011fun i\u015f y\u00fcklerinde \u00f6zellikle b\u00fcy\u00fck avantaj sa\u011flar.<\/p>\n

net\/http Paketine Genel Bak\u0131\u015f<\/h3>\n

net\/http<\/code> paketi, HTTP istemcileri ve sunucular\u0131 olu\u015fturmak i\u00e7in temel yap\u0131lar\u0131 i\u00e7erir. En temel bile\u015fenleri \u015funlard\u0131r:<\/p>\n

    \n
  • http.Handler<\/code>: Gelen HTTP isteklerini i\u015fleyen bir aray\u00fczd\u00fcr. ServeHTTP(w http.ResponseWriter, r *http.Request)<\/code> metodunu implemente eden her tip bir handler olabilir.<\/li>\n
  • http.ResponseWriter<\/code>: \u0130stemciye yan\u0131t yazmak i\u00e7in kullan\u0131lan bir aray\u00fczd\u00fcr.<\/li>\n
  • http.Request<\/code>: Gelen HTTP iste\u011finin t\u00fcm detaylar\u0131n\u0131 (metot, URL, ba\u015fl\u0131klar, body vb.) i\u00e7eren bir yap\u0131d\u0131r.<\/li>\n
  • http.ServeMux<\/code>: HTTP isteklerini URL yollar\u0131na g\u00f6re y\u00f6nlendiren (router) bir multiplexer’d\u0131r.<\/li>\n
  • http.Server<\/code>: HTTP sunucusunu yap\u0131land\u0131rmak ve ba\u015flatmak i\u00e7in kullan\u0131lan bir yap\u0131d\u0131r.<\/li>\n<\/ul>\n

    Basit Bir HTTP Sunucusu Olu\u015fturma<\/h3>\n

    Go ile basit bir HTTP sunucusu olu\u015fturmak olduk\u00e7a kolayd\u0131r. A\u015fa\u011f\u0131daki \u00f6rnek, “Merhaba D\u00fcnya!” mesaj\u0131n\u0131 d\u00f6nd\u00fcren bir sunucuyu g\u00f6stermektedir:<\/p>\n

    package main\n\nimport (\n    \"fmt\"\n    \"log\"\n    \"net\/http\"\n)\n\nfunc main() {\n    \/\/ Bir HTTP handler fonksiyonu tan\u0131mla\n    http.HandleFunc(\"\/\", func(w http.ResponseWriter, r *http.Request) {\n        fmt.Fprintf(w, \"Merhaba D\u00fcnya! Go sunucunuz \u00e7al\u0131\u015f\u0131yor.\")\n    })\n\n    \/\/ Sunucuyu 8080 portunda ba\u015flat\n    fmt.Println(\"Sunucu 8080 portunda dinliyor...\")\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\n}\n<\/pre>\n
    <\/code>
    \nBu kod, http.HandleFunc<\/code> ile k\u00f6k URL (\"\/\") i\u00e7in bir handler atar ve http.ListenAndServe<\/code> ile sunucuyu ba\u015flat\u0131r. nil<\/code> parametresi, varsay\u0131lan http.ServeMux<\/code>'\u0131n kullan\u0131laca\u011f\u0131 anlam\u0131na gelir.<\/p>\n
    2. Performans Optimizasyonu \u0130\u00e7in Temel Yakla\u015f\u0131mlar<\/h2>\n
    Y\u00fcksek performansl\u0131 bir HTTP sunucusu olu\u015fturmak, sadece kodu yazmakla kalmaz, ayn\u0131 zamanda kaynaklar\u0131 verimli kullanmay\u0131 ve darbo\u011fazlar\u0131 ortadan kald\u0131rmay\u0131 gerektirir.<\/p>\n
    Do\u011fru Handler Tasar\u0131m\u0131<\/h3>\n
    Handler fonksiyonlar\u0131n\u0131z\u0131n veya metotlar\u0131n\u0131z\u0131n olabildi\u011fince hafif ve h\u0131zl\u0131 olmas\u0131 kritik \u00f6neme sahiptir.<\/p>\n
      \n
    • I\/O \u0130\u015flemlerini Asenkronize Etme:<\/strong> Uzun s\u00fcren veritaban\u0131 sorgular\u0131, harici API \u00e7a\u011fr\u0131lar\u0131 gibi I\/O yo\u011fun i\u015flemleri ayr\u0131 goroutine'lerde \u00e7al\u0131\u015ft\u0131rarak ana handler'\u0131 bloklamaktan ka\u00e7\u0131n\u0131n. Yan\u0131t\u0131 beklemek yerine, iste\u011fi bir kuyru\u011fa at\u0131p hemen yan\u0131t d\u00f6nebilir veya ba\u015fka bir goroutine'in i\u015flemi bitirmesini bekleyebilirsiniz.<\/li>\n
    • CPU Yo\u011fun \u0130\u015flemleri Optimize Etme:<\/strong> \u015eifreleme, s\u0131k\u0131\u015ft\u0131rma gibi CPU yo\u011fun i\u015flemler i\u00e7in gerekirse \u00f6zel optimizasyonlar yap\u0131n veya bu i\u015flemleri ayr\u0131 servislerde (microservice) \u00e7al\u0131\u015ft\u0131r\u0131n.<\/li>\n
    • Bellek Ay\u0131rmay\u0131 Azaltma:<\/strong> Her istekte yeni bellek ay\u0131rmaktan (\u00f6rne\u011fin, b\u00fcy\u00fck string birle\u015ftirmeleri, slice kopyalamalar\u0131) ka\u00e7\u0131n\u0131n. M\u00fcmk\u00fcnse \u00f6nceden ayr\u0131lm\u0131\u015f buffer'lar\u0131 veya sync.Pool<\/code> gibi yap\u0131lar\u0131 kullan\u0131n.<\/li>\n<\/ul>\n
      Kaynak Y\u00f6netimi ve Ba\u011flant\u0131 Havuzlar\u0131<\/h3>\n
      Harici kaynaklara (veritabanlar\u0131, Redis, di\u011fer API'ler) yap\u0131lan ba\u011flant\u0131lar pahal\u0131 olabilir.<\/p>\n
        \n
      • Veritaban\u0131 Ba\u011flant\u0131 Havuzlar\u0131:<\/strong> database\/sql<\/code> paketi, veritaban\u0131 ba\u011flant\u0131 havuzlar\u0131n\u0131 otomatik olarak y\u00f6netir. db.SetMaxOpenConns<\/code> ve db.SetMaxIdleConns<\/code> gibi ayarlar\u0131 do\u011fru yap\u0131land\u0131rmak, veritaban\u0131 performans\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde etkiler.<\/li>\n
      • HTTP \u0130stemci Ba\u011flant\u0131 Havuzlar\u0131:<\/strong> Kendi HTTP isteklerinizi ba\u015fka servislere yap\u0131yorsan\u0131z, http.Client<\/code> \u00f6rne\u011fini her istekte yeniden olu\u015fturmak yerine tek bir http.Client<\/code> \u00f6rne\u011fini tekrar kullan\u0131n. Bu, temel al\u0131nan TCP ba\u011flant\u0131lar\u0131n\u0131n yeniden kullan\u0131lmas\u0131na olanak tan\u0131r.<\/li>\n<\/ul>\n
        package main\n\nimport (\n    \"net\/http\"\n    \"time\"\n)\n\nvar httpClient = &http.Client{\n    Timeout: 10 * time.Second,\n    Transport: &http.Transport{\n        MaxIdleConns:        100,\n        IdleConnTimeout:     90 * time.Second,\n        MaxIdleConnsPerHost: 10,\n    },\n}\n\nfunc callExternalAPI(url string) (*http.Response, error) {\n    return httpClient.Get(url)\n}\n<\/pre>\n
        <\/code><\/p>\n
        Middleware Kullan\u0131m\u0131 ve Zincirleme<\/h3>\n
        Middleware'ler, gelen istekleri ana handler'a ula\u015fmadan \u00f6nce veya handler'dan \u00e7\u0131kt\u0131ktan sonra i\u015flemek i\u00e7in kullan\u0131lan fonksiyonlard\u0131r. Kimlik do\u011frulama, loglama, s\u0131k\u0131\u015ft\u0131rma, g\u00fcvenlik ba\u015fl\u0131klar\u0131 ekleme gibi \u00e7apraz kesen konular\u0131 merkezi bir yerde y\u00f6netmeyi sa\u011flarlar.<\/p>\n
        package main\n\nimport (\n    \"log\"\n    \"net\/http\"\n    \"time\"\n)\n\n\/\/ LoggerMiddleware, gelen istekleri loglar\nfunc LoggerMiddleware(next http.Handler) http.Handler {\n    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {\n        start := time.Now()\n        next.ServeHTTP(w, r)\n        log.Printf(\"[%s] %s %s %s\", r.Method, r.RequestURI, time.Since(start), r.RemoteAddr)\n    })\n}\n\n\/\/ Ana handler\nfunc helloHandler(w http.ResponseWriter, r *http.Request) {\n    w.Write([]byte(\"Merhaba Go!\"))\n}\n\nfunc main() {\n    mux := http.NewServeMux()\n    mux.HandleFunc(\"\/hello\", helloHandler)\n\n    \/\/ Middleware'i zincirle\n    loggedMux := LoggerMiddleware(mux)\n\n    log.Fatal(http.ListenAndServe(\":8080\", loggedMux))\n}\n<\/pre>\n
        <\/code>
        \nBu \u00f6rnekte LoggerMiddleware<\/code>, her iste\u011fin i\u015flenme s\u00fcresini ve bilgilerini loglar. Middleware'ler, performans \u00fczerinde bir miktar ek y\u00fck olu\u015fturabilir, bu y\u00fczden sadece ger\u00e7ekten gerekli olanlar\u0131 kullanmak \u00f6nemlidir.<\/p>\n
        3. E\u015fzamanl\u0131l\u0131k ve \u00d6l\u00e7eklenebilirlik<\/h2>\n
        Go'nun e\u015fzamanl\u0131l\u0131k yetenekleri, net\/http<\/code> sunucular\u0131n\u0131n y\u00fcksek \u00f6l\u00e7eklenebilirlik potansiyeline sahip olmas\u0131n\u0131 sa\u011flar. Ancak bu potansiyeli tam olarak kullanmak i\u00e7in baz\u0131 yakla\u015f\u0131mlara dikkat etmek gerekir.<\/p>\n
        Goroutine ve Channel Kullan\u0131m\u0131<\/h3>\n
        net\/http<\/code> her istek i\u00e7in yeni bir goroutine ba\u015flat\u0131r. Kendi handler'lar\u0131n\u0131z i\u00e7inde de, uzun s\u00fcren veya bloklay\u0131c\u0131 i\u015flemleri ayr\u0131 goroutine'lere delege edebilirsiniz. Ancak goroutine'leri dikkatli kullanmak \u00f6nemlidir:<\/p>\n
          \n
        • A\u015f\u0131r\u0131 Goroutine Olu\u015fturmaktan Ka\u00e7\u0131n\u0131n:<\/strong> Her goroutine'in bir maliyeti vard\u0131r. Gerekmedik\u00e7e binlerce goroutine olu\u015fturmak yerine, i\u015f havuzlar\u0131 (worker pools) gibi yap\u0131lar kullanarak goroutine say\u0131s\u0131n\u0131 s\u0131n\u0131rlayabilirsiniz.<\/li>\n
        • Channel'larla G\u00fcvenli \u0130leti\u015fim:<\/strong> Goroutine'ler aras\u0131nda veri payla\u015f\u0131m\u0131 yaparken sync<\/code> paketindeki mutex'ler veya channel'lar kullan\u0131n. Channel'lar, Go'nun \"payla\u015f\u0131lan bellek yerine belle\u011fi payla\u015farak ileti\u015fim kurma\" felsefesini destekler ve veri yar\u0131\u015flar\u0131n\u0131 (data races) \u00f6nler.<\/li>\n<\/ul>\n
          Request Context Y\u00f6netimi<\/h3>\n
          Go 1.7 ile birlikte tan\u0131t\u0131lan context<\/code> paketi, istekler aras\u0131 de\u011ferleri, iptal sinyallerini ve zaman a\u015f\u0131mlar\u0131n\u0131 y\u00f6netmek i\u00e7in kritik bir ara\u00e7t\u0131r. http.Request<\/code> yap\u0131s\u0131 art\u0131k bir context.Context<\/code> i\u00e7erir.<\/p>\n
          package main\n\nimport (\n    \"context\"\n    \"fmt\"\n    \"log\"\n    \"net\/http\"\n    \"time\"\n)\n\nfunc longRunningTask(ctx context.Context) string {\n    select {\n    case <-time.After(3 * time.Second):\n        return \"\u0130\u015flem tamamland\u0131!\"\n    case <-ctx.Done():\n        log.Println(\"\u0130\u015flem iptal edildi:\", ctx.Err())\n        return \"\u0130\u015flem iptal edildi.\"\n    }\n}\n\nfunc handlerWithContext(w http.ResponseWriter, r *http.Request) {\n    \/\/ \u0130ste\u011fin context'ini al ve 5 saniyelik bir zaman a\u015f\u0131m\u0131 ekle\n    ctx, cancel := context.WithTimeout(r.Context(), 5*time.Second)\n    defer cancel() \/\/ \u0130\u015flem bitince context'i iptal et\n\n    result := make(chan string)\n    go func() {\n        result <- longRunningTask(ctx)\n    }()\n\n    select {\n    case res := <-result:\n        fmt.Fprintf(w, res)\n    case <-ctx.Done():\n        http.Error(w, \"\u0130stek zaman a\u015f\u0131m\u0131na u\u011frad\u0131 veya iptal edildi.\", http.StatusGatewayTimeout)\n    }\n}\n\nfunc main() {\n    http.HandleFunc(\"\/\", handlerWithContext)\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\n}\n<\/pre>\n
          <\/code>
          \nBu \u00f6rnek, uzun s\u00fcren bir i\u015flemi context.WithTimeout<\/code> ile kontrol eder. E\u011fer i\u015flem zaman a\u015f\u0131m\u0131na u\u011frarsa veya istemci ba\u011flant\u0131y\u0131 kapat\u0131rsa, ctx.Done()<\/code> kanal\u0131 tetiklenir ve i\u015flem iptal edilebilir.<\/p>\n
          Graceful Shutdown (Zarif Kapanma)<\/h3>\n
          \u00dcretim ortam\u0131nda sunucunuzu yeniden ba\u015flatman\u0131z veya g\u00fcncellemeniz gerekti\u011finde, mevcut ba\u011flant\u0131lar\u0131 aniden kesmek yerine, bitmekte olan isteklerin tamamlanmas\u0131na izin veren \"zarif kapanma\" mekanizmas\u0131 \u00f6nemlidir. http.Server<\/code> yap\u0131s\u0131, Shutdown<\/code> metodu ile bu \u00f6zelli\u011fi destekler.<\/p>\n
          package main\n\nimport (\n    \"context\"\n    \"log\"\n    \"net\/http\"\n    \"os\"\n    \"os\/signal\"\n    \"syscall\"\n    \"time\"\n)\n\nfunc main() {\n    mux := http.NewServeMux()\n    mux.HandleFunc(\"\/\", func(w http.ResponseWriter, r *http.Request) {\n        time.Sleep(5 * time.Second) \/\/ Uzun s\u00fcren bir istek sim\u00fclasyonu\n        w.Write([]byte(\"Merhaba, zarif\u00e7e kapan\u0131yorum!\"))\n    })\n\n    server := &http.Server{\n        Addr:    \":8080\",\n        Handler: mux,\n    }\n\n    \/\/ Sunucuyu ayr\u0131 bir goroutine'de ba\u015flat\n    go func() {\n        log.Println(\"Sunucu 8080 portunda dinliyor...\")\n        if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {\n            log.Fatalf(\"Sunucu ba\u015flat\u0131l\u0131rken hata olu\u015ftu: %v\", err)\n        }\n    }()\n\n    \/\/ \u0130\u015fletim sistemi sinyallerini dinle (SIGINT, SIGTERM)\n    quit := make(chan os.Signal, 1)\n    signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)\n    <-quit \/\/ Sinyal gelene kadar bekle\n\n    log.Println(\"Sunucu kapat\u0131l\u0131yor...\")\n\n    \/\/ 15 saniyelik bir zaman a\u015f\u0131m\u0131 ile sunucuyu zarif\u00e7e kapat\n    ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)\n    defer cancel()\n\n    if err := server.Shutdown(ctx); err != nil {\n        log.Fatalf(\"Sunucu zarif\u00e7e kapat\u0131lamad\u0131: %v\", err)\n    }\n\n    log.Println(\"Sunucu ba\u015far\u0131yla kapat\u0131ld\u0131.\")\n}\n<\/pre>\n
          <\/code>
          \nBu \u00f6rnek, SIGINT<\/code> (Ctrl+C) veya SIGTERM<\/code> sinyali al\u0131nd\u0131\u011f\u0131nda sunucunun mevcut istekleri bitirmesi i\u00e7in belirli bir s\u00fcre tan\u0131yarak kapanmas\u0131n\u0131 sa\u011flar.<\/p>\n
          4. Geli\u015fmi\u015f Routing ve Middleware \u00c7\u00f6z\u00fcmleri<\/h2>\n
          net\/http<\/code>'nin varsay\u0131lan http.ServeMux<\/code>'\u0131 temel URL y\u00f6nlendirmesi i\u00e7in yeterli olsa da, daha karma\u015f\u0131k senaryolar i\u00e7in \u00fc\u00e7\u00fcnc\u00fc parti k\u00fct\u00fcphaneler veya \u00f6zel middleware yap\u0131lar\u0131 gerekebilir.<\/p>\n
          \u00dc\u00e7\u00fcnc\u00fc Parti Router K\u00fct\u00fcphaneleri<\/h3>\n
          http.ServeMux<\/code>, sadece tam yol e\u015fle\u015fmeleri veya alt yol e\u015fle\u015fmeleri (prefix matching) yapar. De\u011fi\u015fkenli yollar (path parameters), HTTP metotlar\u0131na g\u00f6re y\u00f6nlendirme ve daha geli\u015fmi\u015f \u00f6zellikler i\u00e7in genellikle a\u015fa\u011f\u0131daki gibi pop\u00fcler \u00fc\u00e7\u00fcnc\u00fc parti router'lar kullan\u0131l\u0131r:<\/p>\n
            \n
          • github.com\/go-chi\/chi<\/code><\/strong>: Hafif, h\u0131zl\u0131 ve esnek bir router'd\u0131r. Middleware zincirlemeyi ve RESTful API'ler i\u00e7in uygun yap\u0131lar\u0131 kolayca destekler.<\/li>\n
          • github.com\/gorilla\/mux<\/code><\/strong>: Go ekosistemindeki en eski ve en olgun router'lardan biridir. \u00c7ok say\u0131da \u00f6zelli\u011fi ve geni\u015f bir toplulu\u011fu vard\u0131r.<\/li>\n<\/ul>\n
            Bu k\u00fct\u00fcphaneler, net\/http<\/code>'nin http.Handler<\/code> aray\u00fcz\u00fcn\u00fc implemente ettikleri i\u00e7in mevcut net\/http<\/code> ekosistemiyle sorunsuz bir \u015fekilde entegre olurlar.<\/p>\n
            Custom Middleware Olu\u015fturma<\/h3>\n
            net\/http<\/code>'nin middleware yap\u0131s\u0131, http.Handler<\/code> aray\u00fcz\u00fcn\u00fc kullanan bir fonksiyondan ibarettir. Kendi middleware'lerinizi olu\u015fturarak uygulaman\u0131z\u0131n \u00f6zel ihtiya\u00e7lar\u0131n\u0131 kar\u015f\u0131layabilirsiniz.<\/p>\n
            package main\n\nimport (\n    \"fmt\"\n    \"net\/http\"\n)\n\n\/\/ AuthMiddleware, basit bir kimlik do\u011frulama kontrol\u00fc yapar\nfunc AuthMiddleware(next http.Handler) http.Handler {\n    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {\n        \/\/ Basit bir API anahtar\u0131 kontrol\u00fc\n        apiKey := r.Header.Get(\"X-API-Key\")\n        if apiKey != \"my-secret-key\" {\n            http.Error(w, \"Yetkisiz eri\u015fim\", http.StatusUnauthorized)\n            return\n        }\n        \/\/ \u0130ste\u011fi bir sonraki handler'a ilet\n        next.ServeHTTP(w, r)\n    })\n}\n\nfunc protectedHandler(w http.ResponseWriter, r *http.Request) {\n    fmt.Fprintf(w, \"Bu korumal\u0131 bir kaynak!\")\n}\n\nfunc main() {\n    mux := http.NewServeMux()\n    \/\/ Korumal\u0131 endpoint'e AuthMiddleware'i uygula\n    mux.Handle(\"\/protected\", AuthMiddleware(http.HandlerFunc(protectedHandler)))\n\n    http.ListenAndServe(\":8080\", mux)\n}\n<\/pre>\n
            <\/code>
            \nBu \u00f6rnekte, \/protected<\/code> yoluna gelen istekler \u00f6nce AuthMiddleware<\/code> taraf\u0131ndan kontrol edilir. Ge\u00e7erli bir API anahtar\u0131 yoksa istek reddedilir, aksi takdirde protectedHandler<\/code> \u00e7al\u0131\u015ft\u0131r\u0131l\u0131r.<\/p>\n
            Performans Odakl\u0131 Middleware \u0130pu\u00e7lar\u0131<\/h3>\n
            Middleware'ler kullan\u0131\u015fl\u0131 olsa da, her birinin bir performans maliyeti vard\u0131r.<\/p>\n
              \n
            • Gereksiz Middleware'lerden Ka\u00e7\u0131n\u0131n:<\/strong> Sadece ger\u00e7ekten ihtiyac\u0131n\u0131z olan middleware'leri kullan\u0131n.<\/li>\n
            • S\u0131ralamaya Dikkat Edin:<\/strong> \u00d6rne\u011fin, loglama middleware'ini kimlik do\u011frulama middleware'inden sonra koymak, yetkisiz isteklerin bo\u015f yere loglanmas\u0131n\u0131 \u00f6nleyebilir.<\/li>\n
            • Hafif \u0130\u015flemler:<\/strong> Middleware'ler i\u00e7inde a\u011f\u0131r CPU veya I\/O i\u015flemleri yapmaktan ka\u00e7\u0131n\u0131n. E\u011fer bir i\u015flem a\u011f\u0131rsa, onu ana handler'a veya ayr\u0131 bir goroutine'e ta\u015f\u0131y\u0131n.<\/li>\n<\/ul>\n
              5. Hata Y\u00f6netimi ve G\u00fcvenlik<\/h2>\n
              Sa\u011flam bir HTTP sunucusu, hatalar\u0131 d\u00fczg\u00fcn bir \u015fekilde y\u00f6netmeli ve g\u00fcvenlik a\u00e7\u0131klar\u0131na kar\u015f\u0131 dayan\u0131kl\u0131 olmal\u0131d\u0131r.<\/p>\n
              D\u00fczg\u00fcn Hata \u0130\u015fleme<\/h3>\n
              Go'da hatalar, error<\/code> aray\u00fcz\u00fc arac\u0131l\u0131\u011f\u0131yla d\u00f6nd\u00fcr\u00fcl\u00fcr. HTTP sunucular\u0131nda, istemcilere anlaml\u0131 hata mesajlar\u0131 ve uygun HTTP durum kodlar\u0131 d\u00f6nd\u00fcrmek \u00f6nemlidir.<\/p>\n
              func errorHandler(w http.ResponseWriter, r *http.Request) {\n    \/\/ \u00d6rnek bir hata durumu\n    err := someOperationThatFails()\n    if err != nil {\n        log.Printf(\"Hata olu\u015ftu: %v\", err) \/\/ Sunucu taraf\u0131nda logla\n        http.Error(w, \"\u0130\u00e7 sunucu hatas\u0131 olu\u015ftu.\", http.StatusInternalServerError) \/\/ \u0130stemciye genel bir hata mesaj\u0131 d\u00f6n\n        return\n    }\n    w.Write([]byte(\"\u0130\u015flem ba\u015far\u0131l\u0131.\"))\n}\n\nfunc someOperationThatFails() error {\n    return fmt.Errorf(\"bir \u015feyler ters gitti\")\n}\n<\/pre>\n
              <\/code>
              \n\u0130stemcilere asla dahili hata detaylar\u0131n\u0131 (stack trace, veritaban\u0131 hata mesajlar\u0131 vb.) if\u015fa etmeyin. Genel, kullan\u0131c\u0131 dostu hata mesajlar\u0131 kullan\u0131n.<\/p>\n
              Loglama Stratejileri<\/h3>\n
              Sunucunuzun davran\u0131\u015f\u0131n\u0131 izlemek, hatalar\u0131 ay\u0131klamak ve g\u00fcvenlik olaylar\u0131n\u0131 tespit etmek i\u00e7in etkili loglama \u015fartt\u0131r.<\/p>\n
                \n
              • Yap\u0131land\u0131r\u0131lm\u0131\u015f Loglama:<\/strong> JSON gibi yap\u0131land\u0131r\u0131lm\u0131\u015f formatlarda loglama yapmak, loglar\u0131n\u0131z\u0131 merkezi bir sistemde (ELK Stack, Grafana Loki vb.) daha kolay analiz etmenizi sa\u011flar. zap<\/code> veya logrus<\/code> gibi \u00fc\u00e7\u00fcnc\u00fc parti loglama k\u00fct\u00fcphaneleri bu konuda yard\u0131mc\u0131 olabilir.<\/li>\n
              • Seviyeler:<\/strong> Loglar\u0131 DEBUG<\/code>, INFO<\/code>, WARN<\/code>, ERROR<\/code>, FATAL<\/code> gibi seviyelere ay\u0131r\u0131n.<\/li>\n
              • Kritik Bilgileri Loglama:<\/strong> \u0130stek metodu, URL, istemci IP'si, yan\u0131t s\u00fcresi, HTTP durumu gibi bilgileri loglay\u0131n.<\/li>\n
              • Hassas Verilerden Ka\u00e7\u0131nma:<\/strong> \u015eifreler, API anahtarlar\u0131, ki\u015fisel veriler gibi hassas bilgileri loglamaktan kesinlikle ka\u00e7\u0131n\u0131n.<\/li>\n<\/ul>\n
                G\u00fcvenlik Best Practices<\/h3>\n
                HTTP sunucular\u0131n\u0131 g\u00fcvenli hale getirmek i\u00e7in temel ad\u0131mlar:<\/p>\n
                  \n
                • HTTPS Kullan\u0131m\u0131:<\/strong> T\u00fcm trafi\u011fi SSL\/TLS \u00fczerinden \u015fifrelemek i\u00e7in HTTPS kullan\u0131n. http.ListenAndServeTLS<\/code> ile sertifika ve anahtar dosyalar\u0131n\u0131 belirterek HTTPS sunucusu ba\u015flatabilirsiniz.<\/li>\n
                • G\u00fcvenlik Ba\u015fl\u0131klar\u0131:<\/strong> Content-Security-Policy<\/code>, X-Content-Type-Options<\/code>, X-Frame-Options<\/code>, Strict-Transport-Security<\/code> gibi HTTP g\u00fcvenlik ba\u015fl\u0131klar\u0131n\u0131 ekleyin. Bir middleware ile bu ba\u015fl\u0131klar\u0131 merkezi olarak y\u00f6netebilirsiniz.<\/li>\n
                • Giri\u015f Do\u011frulama ve Sanitizasyon:<\/strong> Kullan\u0131c\u0131 giri\u015flerini her zaman do\u011frulay\u0131n ve potansiyel g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 (SQL enjeksiyonu, XSS) \u00f6nlemek i\u00e7in sanitizasyon uygulay\u0131n.<\/li>\n
                • Rate Limiting:<\/strong> DoS sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemek i\u00e7in IP adresi veya kullan\u0131c\u0131 baz\u0131nda istek oran\u0131n\u0131 s\u0131n\u0131rlay\u0131n.<\/li>\n
                • Hata Mesajlar\u0131n\u0131 Gizleme:<\/strong> Yukar\u0131da belirtildi\u011fi gibi, dahili hata detaylar\u0131n\u0131 istemcilere g\u00f6stermeyin.<\/li>\n<\/ul>\n
                  6. Performans \u0130zleme ve Test Etme<\/h2>\n
                  Bir sunucunun y\u00fcksek performansl\u0131 olup olmad\u0131\u011f\u0131n\u0131 anlaman\u0131n tek yolu, onu \u00f6l\u00e7mek ve test etmektir.<\/p>\n
                  Profilleme Ara\u00e7lar\u0131 (pprof)<\/h3>\n
                  Go, dahili bir profilleme arac\u0131 olan pprof<\/code>'u sunar. Bu ara\u00e7, CPU kullan\u0131m\u0131, bellek ay\u0131rmalar\u0131, goroutine say\u0131s\u0131 ve bloklama profilleri gibi metrikleri toplaman\u0131za olanak tan\u0131r.<\/p>\n
                  package main\n\nimport (\n    \"log\"\n    \"net\/http\"\n    _ \"net\/http\/pprof\" \/\/ pprof endpoint'lerini kaydeder\n)\n\nfunc main() {\n    http.HandleFunc(\"\/\", func(w http.ResponseWriter, r *http.Request) {\n        w.Write([]byte(\"Merhaba pprof!\"))\n    })\n\n    \/\/ pprof endpoint'leri otomatik olarak \/debug\/pprof alt\u0131nda yay\u0131nlan\u0131r.\n    \/\/ Bu sunucuyu ayr\u0131 bir portta \u00e7al\u0131\u015ft\u0131rmak daha g\u00fcvenli ve yayg\u0131n bir yakla\u015f\u0131md\u0131r.\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\n}\n<\/pre>\n
                  <\/code>
                  \nSunucu \u00e7al\u0131\u015f\u0131rken go tool pprof http:\/\/localhost:8080\/debug\/pprof\/heap<\/code> veya go tool pprof http:\/\/localhost:8080\/debug\/pprof\/cpu<\/code> gibi komutlarla profilleme verilerini \u00e7ekebilir ve analiz edebilirsiniz.<\/p>\n
                  Benchmark Testleri<\/h3>\n
                  Kodunuzun performans\u0131n\u0131 \u00f6l\u00e7mek i\u00e7in Go'nun yerle\u015fik benchmark ara\u00e7lar\u0131n\u0131 kullan\u0131n.<\/p>\n
                  package main\n\nimport (\n    \"net\/http\"\n    \"net\/http\/httptest\"\n    \"testing\"\n)\n\nfunc helloHandler(w http.ResponseWriter, r *http.Request) {\n    w.Write([]byte(\"Merhaba Benchmark!\"))\n}\n\nfunc BenchmarkHelloHandler(b *testing.B) {\n    req, _ := http.NewRequest(\"GET\", \"\/\", nil)\n    rr := httptest.NewRecorder()\n    handler := http.HandlerFunc(helloHandler)\n\n    for i := 0; i < b.N; i++ {\n        handler.ServeHTTP(rr, req)\n    }\n}\n<\/pre>\n
                  <\/code>
                  \nBu benchmark, helloHandler<\/code>'\u0131n ne kadar h\u0131zl\u0131 \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 \u00f6l\u00e7er. go test -bench=.<\/code> komutu ile \u00e7al\u0131\u015ft\u0131r\u0131labilir. Daha kapsaml\u0131 y\u00fck testleri i\u00e7in ApacheBench (ab)<\/code>, wrk<\/code> veya k6<\/code> gibi ara\u00e7lar\u0131 kullan\u0131n.<\/p>\n
                  Metrik Toplama ve \u0130zleme<\/h3>\n
                  Uygulaman\u0131z\u0131n \u00fcretim ortam\u0131ndaki sa\u011fl\u0131\u011f\u0131n\u0131 ve performans\u0131n\u0131 s\u00fcrekli izlemek i\u00e7in Prometheus, Grafana gibi ara\u00e7larla entegrasyon sa\u011flay\u0131n. Go'da github.com\/prometheus\/client_golang<\/code> paketi ile kolayca metrikler yay\u0131nlayabilirsiniz.<\/p>\n\n\n\n\n\n\n\n\n
                  Metrik Tipi<\/th>\nA\u00e7\u0131klama<\/th>\n\u00d6rnek<\/th>\n<\/tr>\n<\/thead>\n
                  \u0130stek Say\u0131s\u0131<\/td>\nToplam gelen istek say\u0131s\u0131<\/td>\nhttp_requests_total<\/code><\/td>\n<\/tr>\n
                  \u0130stek S\u00fcresi<\/td>\n\u0130steklerin i\u015flenme s\u00fcresi (histogram)<\/td>\nhttp_request_duration_seconds<\/code><\/td>\n<\/tr>\n
                  Hata Oran\u0131<\/td>\nBa\u015far\u0131s\u0131z olan isteklerin oran\u0131<\/td>\nhttp_errors_total<\/code><\/td>\n<\/tr>\n
                  Goroutine Say\u0131s\u0131<\/td>\nAktif goroutine say\u0131s\u0131<\/td>\ngo_goroutines<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                  Sonu\u00e7<\/h2>\n
                  Go'nun net\/http<\/code> paketi, y\u00fcksek performansl\u0131 ve \u00f6l\u00e7eklenebilir HTTP sunucular\u0131 olu\u015fturmak i\u00e7in g\u00fc\u00e7l\u00fc ve esnek bir temel sunar. Go'nun e\u015fzamanl\u0131l\u0131k modeli, net\/http<\/code>'nin basit ama etkili tasar\u0131m\u0131yla birle\u015fti\u011finde, modern web servislerinin zorlu taleplerini kar\u015f\u0131layabilecek uygulamalar geli\u015ftirmenizi sa\u011flar. Bu makalede ele al\u0131nan optimizasyon teknikleri, e\u015fzamanl\u0131l\u0131k y\u00f6netimi, graceful shutdown, geli\u015fmi\u015f routing, hata i\u015fleme, g\u00fcvenlik ve performans izleme yakla\u015f\u0131mlar\u0131n\u0131 uygulayarak, Go ile sadece \u00e7al\u0131\u015fan de\u011fil, ayn\u0131 zamanda verimli, dayan\u0131kl\u0131 ve bak\u0131m\u0131 kolay HTTP sunucular\u0131 in\u015fa edebilirsiniz. Unutmay\u0131n, performans optimizasyonu s\u00fcrekli bir s\u00fcre\u00e7tir ve uygulaman\u0131z\u0131n \u00f6zel ihtiya\u00e7lar\u0131na g\u00f6re \u015fekillenmelidir.<\/p>\n
                  S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h2>\n
                  Go'nun net\/http paketi \u00fcretimde kullan\u0131labilir mi?<\/h3>\n
                  Kesinlikle evet. net\/http<\/code> paketi, Google ve di\u011fer bir\u00e7ok b\u00fcy\u00fck \u015firket taraf\u0131ndan \u00fcretimde yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Performans\u0131, \u00f6l\u00e7eklenebilirli\u011fi ve Go'nun kararl\u0131 yap\u0131s\u0131 sayesinde g\u00fcvenle tercih edilebilir.<\/p>\n
                  Neden \u00fc\u00e7\u00fcnc\u00fc parti bir router kullanmal\u0131y\u0131m?<\/h3>\n
                  net\/http<\/code>'nin varsay\u0131lan http.ServeMux<\/code>'\u0131 basit y\u00f6nlendirmeler i\u00e7in yeterlidir. Ancak de\u011fi\u015fkenli yollar (\u00f6rne\u011fin \/users\/{id}<\/code>), HTTP metotlar\u0131na g\u00f6re y\u00f6nlendirme (GET<\/code>, POST<\/code>), middleware zincirleme gibi daha geli\u015fmi\u015f \u00f6zelliklere ihtiyac\u0131n\u0131z varsa, Chi veya Gorilla Mux gibi \u00fc\u00e7\u00fcnc\u00fc parti router'lar daha esnek ve kullan\u0131\u015fl\u0131 \u00e7\u00f6z\u00fcmler sunar.<\/p>\n
                  Graceful shutdown neden \u00f6nemlidir?<\/h3>\n
                  Graceful shutdown (zarif kapanma), sunucunuzu yeniden ba\u015flat\u0131rken veya g\u00fcncellerken, o an i\u015flenmekte olan isteklerin kesintiye u\u011framadan tamamlanmas\u0131n\u0131 sa\u011flar. Bu, kullan\u0131c\u0131 deneyimini iyile\u015ftirir ve veri kayb\u0131n\u0131 \u00f6nler. \u00dcretim ortam\u0131nda kesintisiz servis sa\u011flamak i\u00e7in kritik bir \u00f6zelliktir.<\/p>\n
                  net\/http ile gRPC aras\u0131ndaki fark nedir?<\/h3>\n
                  net\/http<\/code> genellikle RESTful API'ler ve taray\u0131c\u0131 tabanl\u0131 uygulamalar i\u00e7in kullan\u0131l\u0131rken, gRPC (Google Remote Procedure Call) daha \u00e7ok mikroservisler aras\u0131 y\u00fcksek performansl\u0131, ikili protokol tabanl\u0131 ileti\u015fim i\u00e7in tasarlanm\u0131\u015ft\u0131r. gRPC, Protobuf kullanarak daha verimli veri serile\u015ftirme ve daha g\u00fc\u00e7l\u00fc tip g\u00fcvenli\u011fi sunar. Se\u00e7im, projenizin ihtiya\u00e7lar\u0131na (taray\u0131c\u0131 uyumlulu\u011fu, performans gereksinimleri, dil ba\u011f\u0131ms\u0131zl\u0131\u011f\u0131 vb.) ba\u011fl\u0131d\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"Go’nun net\/http Paketi ile Y\u00fcksek Performansl\u0131 HTTP Sunucular\u0131 Olu\u015fturma\nGo programlama dili, e\u015fzamanl\u0131l\u0131k ve performans odakl\u0131 tasar\u0131m\u0131 sayesinde…","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-36590","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nGo'nun net\/http Paketi ile Y\u00fcksek Performansl\u0131 HTTP Sunucular\u0131 Olu\u015fturma - 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