{"id":38199,"date":"2026-01-25T15:41:26","date_gmt":"2026-01-25T12:41:26","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=38199"},"modified":"2026-01-25T15:41:26","modified_gmt":"2026-01-25T12:41:26","slug":"goda-panikler-nelerdir-ve-neden-onemlidir","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/","title":{"rendered":"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?"},"content":{"rendered":"<p><body><\/p>\n<h2>Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?<\/h2>\n<p>Go programlama dilinde hata y\u00f6netimi genellikle <code>error<\/code> aray\u00fcz\u00fc arac\u0131l\u0131\u011f\u0131yla yap\u0131l\u0131r. Ancak, baz\u0131 istisnai durumlar vard\u0131r ki program\u0131n normal ak\u0131\u015f\u0131n\u0131 s\u00fcrd\u00fcrmesi m\u00fcmk\u00fcn de\u011fildir. \u0130\u015fte bu noktada &#8220;panik&#8221; (panic) devreye girer. Bir panik, program\u0131n \u00e7al\u0131\u015fma zaman\u0131nda beklenmedik ve kurtar\u0131lamaz bir hata ile kar\u015f\u0131la\u015ft\u0131\u011f\u0131n\u0131 g\u00f6sterir ve e\u011fer yakalanmazsa program\u0131n tamamen \u00e7\u00f6kmesine neden olur.<\/p>\n<p>Go&#8217;da panikler, genellikle programlama hatalar\u0131ndan veya beklenmedik \u00e7al\u0131\u015fma zaman\u0131 durumlar\u0131ndan kaynaklan\u0131r. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>Nil pointer&#8217;\u0131n referans\u0131n\u0131n \u00e7\u00f6z\u00fclmesi (nil pointer dereference).<\/li>\n<li>Dizi veya slice s\u0131n\u0131rlar\u0131n\u0131n d\u0131\u015f\u0131na eri\u015fim.<\/li>\n<li>Tip d\u00f6n\u00fc\u015f\u00fcm\u00fcn\u00fcn ba\u015far\u0131s\u0131z olmas\u0131 (<code>type assertion<\/code> hatas\u0131).<\/li>\n<li>Kas\u0131tl\u0131 olarak <code>panic()<\/code> fonksiyonunun \u00e7a\u011fr\u0131lmas\u0131.<\/li>\n<\/ul>\n<p>Panikler, <code>error<\/code> aray\u00fcz\u00fc ile y\u00f6netilen hatalardan farkl\u0131d\u0131r. <code>error<\/code>&#8216;lar beklenen, kontrol edilebilir durumlar i\u00e7in kullan\u0131l\u0131rken (\u00f6rne\u011fin, dosya bulunamad\u0131, a\u011f ba\u011flant\u0131s\u0131 kesildi), panikler genellikle program\u0131n mant\u0131\u011f\u0131nda ciddi bir sorun oldu\u011funu ve bu sorunun \u00e7\u00f6z\u00fclmesi gerekti\u011fini i\u015faret eder. Bir panik olu\u015ftu\u011funda, Go \u00e7al\u0131\u015fma zaman\u0131 mevcut goroutine&#8217;deki t\u00fcm fonksiyon \u00e7a\u011fr\u0131lar\u0131n\u0131n y\u0131\u011f\u0131n\u0131n\u0131 (stack) geri sarar ve e\u011fer hi\u00e7bir <code>recover<\/code> mekanizmas\u0131 taraf\u0131ndan yakalanmazsa, program sonlan\u0131r ve y\u0131\u011f\u0131n izini (stack trace) yazd\u0131r\u0131r.<\/p>\n<h3>Go&#8217;da <code>panic()<\/code> Kullan\u0131m\u0131<\/h3>\n<p>Kendi kodunuzda <code>panic()<\/code> fonksiyonunu \u00e7a\u011f\u0131rmak nadiren iyi bir pratiktir ve genellikle sadece program\u0131n devam edemeyece\u011fi, tamamen ge\u00e7ersiz bir duruma ula\u015ft\u0131\u011f\u0131n\u0131zda d\u00fc\u015f\u00fcn\u00fclmelidir. \u00d6rne\u011fin, bir k\u00fct\u00fcphane fonksiyonunun, ba\u015flat\u0131lmas\u0131 i\u00e7in kritik \u00f6nko\u015fullar\u0131n kar\u015f\u0131lanmad\u0131\u011f\u0131n\u0131 fark etti\u011finde panik atmas\u0131 mant\u0131kl\u0131 olabilir.<\/p>\n<pre><code class=\"language-go\">package main\n\nimport \"fmt\"\n\nfunc divide(a, b int) int {\n    if b == 0 {\n        \/\/ Bu durum program\u0131n mant\u0131ksal olarak devam edemeyece\u011fi bir hata olabilir.\n        \/\/ Ancak \u00e7o\u011fu durumda bir hata (error) d\u00f6nd\u00fcrmek daha iyidir.\n        panic(\"s\u0131f\u0131ra b\u00f6lme hatas\u0131!\") \n    }\n    return a \/ b\n}\n\nfunc main() {\n    fmt.Println(\"Program ba\u015fl\u0131yor...\")\n    result := divide(10, 0) \/\/ Burada panik olu\u015facak\n    fmt.Println(\"Sonu\u00e7:\", result) \/\/ Bu sat\u0131ra asla ula\u015f\u0131lamayacak\n    fmt.Println(\"Program bitti.\")\n}\n<\/code><\/pre>\n<p>Yukar\u0131daki \u00f6rnekte, <code>divide<\/code> fonksiyonu <code>b<\/code> s\u0131f\u0131r oldu\u011funda panik atar. <code>main<\/code> fonksiyonunda bu panik yakalanmad\u0131\u011f\u0131 i\u00e7in program \u00e7\u00f6kecek ve &#8220;Program bitti.&#8221; mesaj\u0131 ekrana yaz\u0131lmayacakt\u0131r.<\/p>\n<h2><code>defer<\/code> ve <code>recover<\/code> Mekanizmas\u0131<\/h2>\n<p>Go&#8217;da panikleri y\u00f6netmek i\u00e7in <code>defer<\/code> ve <code>recover<\/code> anahtar kelimeleri kullan\u0131l\u0131r. Bu ikili, bir panik durumunda bile program\u0131n kontrol\u00fc ele almas\u0131n\u0131 ve potansiyel olarak normal \u00e7al\u0131\u015fmas\u0131na devam etmesini sa\u011flar.<\/p>\n<h3><code>defer<\/code> Anahtar Kelimesi<\/h3>\n<p><code>defer<\/code> ifadesi, \u00e7a\u011fr\u0131ld\u0131\u011f\u0131 fonksiyonun bitiminde (normal d\u00f6n\u00fc\u015f, <code>return<\/code> ile veya panik nedeniyle) \u00e7al\u0131\u015ft\u0131r\u0131lacak bir fonksiyonu programlar. <code>defer<\/code> edilen fonksiyonlar, \u00e7a\u011fr\u0131lma s\u0131ras\u0131n\u0131n tersiyle (LIFO &#8211; Last In, First Out) y\u00fcr\u00fct\u00fcl\u00fcr. <code>defer<\/code> genellikle kaynak temizli\u011fi (dosya kapatma, kilit a\u00e7ma) veya panik kurtarma mekanizmalar\u0131n\u0131 kurmak i\u00e7in kullan\u0131l\u0131r.<\/p>\n<pre><code class=\"language-go\">package main\n\nimport \"fmt\"\n\nfunc main() {\n    fmt.Println(\"1. main fonksiyonu ba\u015fl\u0131yor\")\n    \n    defer fmt.Println(\"3. defer fonksiyonu \u00e7al\u0131\u015ft\u0131\") \/\/ Bu en son \u00e7al\u0131\u015facak\n    \n    fmt.Println(\"2. main fonksiyonu \u00e7al\u0131\u015f\u0131yor\")\n}\n<\/code><\/pre>\n<p>Yukar\u0131daki kodun \u00e7\u0131kt\u0131s\u0131 \u015fu \u015fekilde olacakt\u0131r:<\/p>\n<pre>\n1. main fonksiyonu ba\u015fl\u0131yor\n2. main fonksiyonu \u00e7al\u0131\u015f\u0131yor\n3. defer fonksiyonu \u00e7al\u0131\u015ft\u0131\n<\/pre>\n<h3><code>recover()<\/code> Fonksiyonu<\/h3>\n<p><code>recover()<\/code> fonksiyonu, yaln\u0131zca <code>defer<\/code> edilmi\u015f bir fonksiyonun i\u00e7inde \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda anlaml\u0131d\u0131r. Bir <code>defer<\/code> fonksiyonu i\u00e7inde <code>recover()<\/code> \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda ve o anda bir panik aktifse, <code>recover()<\/code> panik de\u011ferini d\u00f6nd\u00fcr\u00fcr ve panik durumunu durdurur. Bu, goroutine&#8217;in normal bir \u015fekilde \u00e7al\u0131\u015fmaya devam etmesini sa\u011flar. E\u011fer <code>recover()<\/code> aktif bir panik yokken \u00e7a\u011fr\u0131l\u0131rsa veya <code>defer<\/code> fonksiyonunun d\u0131\u015f\u0131nda \u00e7a\u011fr\u0131l\u0131rsa <code>nil<\/code> d\u00f6nd\u00fcr\u00fcr ve hi\u00e7bir etkisi olmaz.<\/p>\n<pre><code class=\"language-go\">package main\n\nimport (\n\t\"fmt\"\n\t\"runtime\/debug\" \/\/ Y\u0131\u011f\u0131n izini almak i\u00e7in\n)\n\nfunc safeDivide(a, b int) (result int, err error) {\n    \/\/ defer fonksiyonu panik durumunda \u00e7al\u0131\u015facak\n    defer func() {\n        if r := recover(); r != nil {\n            fmt.Println(\"Panik yakaland\u0131:\", r)\n            fmt.Println(\"Y\u0131\u011f\u0131n \u0130zi:\\n\", string(debug.Stack())) \/\/ Y\u0131\u011f\u0131n izini yazd\u0131r\n            err = fmt.Errorf(\"panik olu\u015ftu: %v\", r) \/\/ Paniki bir hataya d\u00f6n\u00fc\u015ft\u00fcr\n        }\n    }()\n\n    if b == 0 {\n        panic(\"s\u0131f\u0131ra b\u00f6lme hatas\u0131!\")\n    }\n    result = a \/ b\n    return result, nil\n}\n\nfunc main() {\n    fmt.Println(\"Program ba\u015fl\u0131yor...\")\n\n    \/\/ Panik yakalanacak ve hata olarak d\u00f6necek\n    res, err := safeDivide(10, 0)\n    if err != nil {\n        fmt.Println(\"safeDivide hatas\u0131:\", err)\n    } else {\n        fmt.Println(\"safeDivide sonucu:\", res)\n    }\n\n    \/\/ Normal \u00e7al\u0131\u015fma devam ediyor\n    res2, err2 := safeDivide(10, 2)\n    if err2 != nil {\n        fmt.Println(\"safeDivide hatas\u0131:\", err2)\n    } else {\n        fmt.Println(\"safeDivide sonucu:\", res2)\n    }\n\n    fmt.Println(\"Program bitti.\")\n}\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>safeDivide<\/code> fonksiyonu i\u00e7inde bir <code>defer<\/code> blo\u011fu tan\u0131mlanm\u0131\u015ft\u0131r. <code>b == 0<\/code> oldu\u011funda <code>panic<\/code> \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda, kontrol <code>defer<\/code> fonksiyonuna ge\u00e7er. Burada <code>recover()<\/code> paniki yakalar, panik de\u011ferini ve y\u0131\u011f\u0131n izini yazd\u0131r\u0131r, ard\u0131ndan panik durumunu bir <code>error<\/code>&#8216;a d\u00f6n\u00fc\u015ft\u00fcrerek fonksiyonun normal bir \u015fekilde d\u00f6nmesini sa\u011flar. B\u00f6ylece <code>main<\/code> fonksiyonu \u00e7\u00f6kmek yerine hatay\u0131 ele alabilir ve \u00e7al\u0131\u015fmas\u0131na devam edebilir.<\/p>\n<h2>Panik Y\u00f6netimi \u0130\u00e7in En \u0130yi Pratikler ve Ne Zaman <code>recover<\/code> Kullanmal\u0131?<\/h2>\n<p>Paniklerin y\u00f6netimi, Go programlamada dikkatli bir \u015fekilde ele al\u0131nmas\u0131 gereken bir konudur. <code>recover<\/code> mekanizmas\u0131 g\u00fc\u00e7l\u00fc olsa da, her durumda kullan\u0131lmas\u0131 do\u011fru de\u011fildir.<\/p>\n<h3>Ne Zaman <code>recover<\/code> Kullanmamal\u0131s\u0131n\u0131z?<\/h3>\n<ul>\n<li><b>Rutin Hata Y\u00f6netimi \u0130\u00e7in:<\/b> <code>error<\/code> aray\u00fcz\u00fc, beklenen hatalar i\u00e7in tasarlanm\u0131\u015ft\u0131r. Panikler, program\u0131n ciddi bir mant\u0131ksal tutars\u0131zl\u0131k ya\u015fad\u0131\u011f\u0131 durumlara saklanmal\u0131d\u0131r. <code>panic<\/code>&#8216;i <code>if err != nil<\/code> bloklar\u0131n\u0131n yerine kullanmak k\u00f6t\u00fc bir pratiktir.<\/li>\n<li><b>Hatalar\u0131 Gizlemek \u0130\u00e7in:<\/b> Bir panik genellikle bir bug&#8217;\u0131n i\u015faretidir. <code>recover<\/code> kullanarak panikleri sessizce yakalamak, temel sorunu gizleyebilir ve daha sonra te\u015fhis edilmesi zor hatalara yol a\u00e7abilir.<\/li>\n<li><b>K\u00fct\u00fcphane Fonksiyonlar\u0131nda:<\/b> Genel ama\u00e7l\u0131 k\u00fct\u00fcphaneler genellikle paniklerden kurtulmamal\u0131d\u0131r. Bir k\u00fct\u00fcphanede bir panik olu\u015fursa, bu genellikle k\u00fct\u00fcphaneyi kullanan uygulaman\u0131n bir sorunudur ve uygulaman\u0131n bu paniki ele almas\u0131na izin verilmelidir.<\/li>\n<\/ul>\n<h3>Ne Zaman <code>recover<\/code> Kullanmal\u0131s\u0131n\u0131z?<\/h3>\n<p><code>recover<\/code> kullanman\u0131n me\u015fru oldu\u011fu baz\u0131 senaryolar vard\u0131r:<\/p>\n<ol>\n<li>\n        <b>Sunucu Seviyesi Kurtarma:<\/b> Bir web sunucusu veya uzun s\u00fcreli \u00e7al\u0131\u015fan bir servis, tek bir iste\u011fin veya goroutine&#8217;in panik atmas\u0131 nedeniyle tamamen \u00e7\u00f6kmemelidir. Bu t\u00fcr durumlarda, her bir iste\u011fi i\u015fleyen goroutine&#8217;in \u00fcst seviyesinde bir <code>defer\/recover<\/code> blo\u011fu kurarak, panikleyen iste\u011fi izole edebilir ve sunucunun di\u011fer istekleri i\u015flemeye devam etmesini sa\u011flayabilirsiniz.<\/p>\n<pre><code class=\"language-go\">package main\n\nimport (\n\t\"fmt\"\n\t\"net\/http\"\n\t\"runtime\/debug\"\n)\n\nfunc handler(w http.ResponseWriter, r *http.Request) {\n    defer func() {\n        if rec := recover(); rec != nil {\n            fmt.Printf(\"HTTP iste\u011fi s\u0131ras\u0131nda panik yakaland\u0131: %v\\n\", rec)\n            fmt.Printf(\"Y\u0131\u011f\u0131n \u0130zi:\\n%s\\n\", debug.Stack())\n            http.Error(w, \"Sunucu Hatas\u0131\", http.StatusInternalServerError)\n        }\n    }()\n\n    \/\/ Buras\u0131 panik atabilecek bir kod blo\u011fu\n    if r.URL.Path == \"\/panic\" {\n        panic(\"Kas\u0131tl\u0131 panik!\")\n    }\n\n    fmt.Fprintf(w, \"Merhaba, d\u00fcnya! Yol: %s\\n\", r.URL.Path)\n}\n\nfunc main() {\n    http.HandleFunc(\"\/\", handler)\n    fmt.Println(\"Sunucu http:\/\/localhost:8080 adresinde \u00e7al\u0131\u015f\u0131yor...\")\n    http.ListenAndServe(\":8080\", nil)\n}\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>\/panic<\/code> yoluna yap\u0131lan bir istek bir panik tetikleyecektir. Ancak <code>handler<\/code> fonksiyonundaki <code>defer\/recover<\/code> blo\u011fu sayesinde sunucu \u00e7\u00f6kmeyecek, sadece ilgili iste\u011fe 500 Internal Server Error d\u00f6necek ve di\u011fer istekleri i\u015flemeye devam edecektir.<\/p>\n<\/li>\n<li>\n        <b>Goroutine \u0130zolasyonu:<\/b> Bir uygulamada birden fazla goroutine \u00e7al\u0131\u015f\u0131yorsa ve birinin panik atmas\u0131 di\u011ferlerini etkilememeli veya t\u00fcm uygulaman\u0131n \u00e7\u00f6kmesine neden olmamal\u0131d\u0131r. \u00d6zellikle &#8220;i\u015f\u00e7i havuzu&#8221; (worker pool) gibi yap\u0131larda bu \u00f6nemlidir.\n    <\/li>\n<li>\n        <b>G\u00fcvenilmeyen Kodun Y\u00fcr\u00fct\u00fclmesi:<\/b> Bir plugin sistemi veya kullan\u0131c\u0131 taraf\u0131ndan sa\u011flanan kodun y\u00fcr\u00fct\u00fcld\u00fc\u011f\u00fc durumlarda, bu kodun potansiyel hatalar\u0131n\u0131 izole etmek i\u00e7in <code>recover<\/code> kullan\u0131labilir.\n    <\/li>\n<li>\n        <b>Paniki Hata Olarak D\u00f6n\u00fc\u015ft\u00fcrme:<\/b> Baz\u0131 nadir durumlarda, bir panik durumunu yakalay\u0131p daha sonra \u00e7a\u011f\u0131ran fonksiyona <code>error<\/code> olarak d\u00f6nd\u00fcrmek isteyebilirsiniz. Bu, \u00f6zellikle eski veya \u00fc\u00e7\u00fcnc\u00fc taraf k\u00fct\u00fcphanelerle entegrasyon yaparken faydal\u0131 olabilir.\n    <\/li>\n<\/ol>\n<h2>Panik Sonras\u0131 Loglama ve Raporlama<\/h2>\n<p>Bir paniki <code>recover<\/code> ile yakalamak, program\u0131n \u00e7\u00f6kmesini engeller ancak sorunun nedenini ortadan kald\u0131rmaz. Bu nedenle, bir panik yakaland\u0131\u011f\u0131nda uygun loglama ve raporlama yapmak hayati \u00f6nem ta\u015f\u0131r. Bu, geli\u015ftiricilerin sorunu tespit etmesine ve gelecekte \u00f6nlemler almas\u0131na yard\u0131mc\u0131 olur.<\/p>\n<h3>Ne Loglanmal\u0131?<\/h3>\n<ul>\n<li><b>Panik De\u011feri:<\/b> <code>recover()<\/code> fonksiyonunun d\u00f6nd\u00fcrd\u00fc\u011f\u00fc de\u011fer (genellikle <code>string<\/code> veya <code>error<\/code>).<\/li>\n<li><b>Y\u0131\u011f\u0131n \u0130zi (Stack Trace):<\/b> Panikin tam olarak nerede ve hangi fonksiyon \u00e7a\u011fr\u0131lar\u0131 s\u0131ras\u0131nda meydana geldi\u011fini g\u00f6steren y\u0131\u011f\u0131n izi. <code>runtime\/debug<\/code> paketindeki <code>debug.PrintStack()<\/code> veya <code>debug.Stack()<\/code> fonksiyonlar\u0131 ile elde edilebilir. Bu, hata ay\u0131klama i\u00e7in en kritik bilgidir.<\/li>\n<li><b>Ba\u011flamsal Bilgiler:<\/b> E\u011fer m\u00fcmk\u00fcnse, panik an\u0131ndaki ilgili ba\u011flamsal bilgileri (\u00f6rne\u011fin, HTTP iste\u011fi parametreleri, kullan\u0131c\u0131 ID&#8217;si, i\u015flem ID&#8217;si) loglamak, sorunun k\u00f6k nedenini anlamaya yard\u0131mc\u0131 olur.<\/li>\n<\/ul>\n<h3>\u00d6rnek: Geli\u015ftirilmi\u015f Panik Kurtarma ve Loglama<\/h3>\n<pre><code class=\"language-go\">package main\n\nimport (\n\t\"fmt\"\n\t\"log\"\n\t\"runtime\/debug\"\n\t\"time\"\n)\n\n\/\/ simulateWork panik atabilecek bir i\u015fi sim\u00fcle eder\nfunc simulateWork(taskID int, shouldPanic bool) {\n    defer func() {\n        if r := recover(); r != nil {\n            log.Printf(\"Task %d panik yakaland\u0131: %v\\n\", taskID, r)\n            log.Printf(\"Task %d y\u0131\u011f\u0131n izi:\\n%s\\n\", taskID, debug.Stack())\n            \/\/ Burada Prometheus\/Grafana gibi bir izleme sistemine metrik g\u00f6nderebiliriz\n            \/\/ Veya bir hata izleme servisine (Sentry, Bugsnag) hata raporu g\u00f6nderebiliriz.\n        }\n    }()\n\n    log.Printf(\"Task %d ba\u015fl\u0131yor...\", taskID)\n    time.Sleep(100 * time.Millisecond) \/\/ Biraz i\u015f yap\u0131yormu\u015f gibi yapal\u0131m\n\n    if shouldPanic {\n        panic(fmt.Sprintf(\"Task %d'de kas\u0131tl\u0131 panik!\", taskID))\n    }\n\n    log.Printf(\"Task %d ba\u015far\u0131yla tamamland\u0131.\", taskID)\n}\n\nfunc main() {\n    log.Println(\"Uygulama ba\u015fl\u0131yor...\")\n\n    \/\/ Panik atacak bir i\u015f\n    go simulateWork(1, true)\n\n    \/\/ Panik atmayacak bir i\u015f\n    go simulateWork(2, false)\n\n    \/\/ Panik atacak ba\u015fka bir i\u015f\n    go simulateWork(3, true)\n\n    \/\/ Goroutinelerin bitmesini beklemek i\u00e7in biraz zaman tan\u0131yal\u0131m\n    time.Sleep(1 * time.Second)\n\n    log.Println(\"Uygulama bitti.\")\n}\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>simulateWork<\/code> fonksiyonu bir <code>defer\/recover<\/code> blo\u011fu i\u00e7erir. Bir panik olu\u015ftu\u011funda, <code>log.Printf<\/code> ile panik de\u011feri ve <code>debug.Stack()<\/code> ile y\u0131\u011f\u0131n izi standart log \u00e7\u0131kt\u0131s\u0131na yaz\u0131l\u0131r. Ger\u00e7ek bir uygulamada, bu loglar merkezi bir loglama sistemine g\u00f6nderilmeli ve hata izleme ara\u00e7lar\u0131yla entegre edilmelidir.<\/p>\n<h2>Sonu\u00e7 ve S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h2>\n<p>Go&#8217;da panikler, program\u0131n \u00e7al\u0131\u015fma zaman\u0131nda kar\u015f\u0131la\u015ft\u0131\u011f\u0131 ciddi, beklenmedik hatalar\u0131 ifade eder. <code>defer<\/code> ve <code>recover<\/code> mekanizmas\u0131, bu panikleri yakalama ve program\u0131n \u00e7\u00f6kmesini engelleme yetene\u011fi sunar. Ancak bu mekanizma dikkatli ve se\u00e7ici bir \u015fekilde kullan\u0131lmal\u0131d\u0131r. Panikler, rutin hata y\u00f6netimi i\u00e7in de\u011fil, genellikle sunucu seviyesi kurtarma veya g\u00fcvenilmeyen kodun izolasyonu gibi istisnai durumlar i\u00e7in ayr\u0131lmal\u0131d\u0131r. Bir panik yakaland\u0131\u011f\u0131nda, sorunu te\u015fhis etmek ve gelecekteki hatalar\u0131 \u00f6nlemek i\u00e7in kapsaml\u0131 loglama ve raporlama yapmak hayati \u00f6nem ta\u015f\u0131r.<\/p>\n<h3>S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h3>\n<p><b>S: <code>panic<\/code> mi kullanmal\u0131y\u0131m yoksa <code>error<\/code> mu?<\/b><br \/>\nC: \u00c7o\u011fu durumda <code>error<\/code> kullanmal\u0131s\u0131n\u0131z. <code>error<\/code>&#8216;lar, beklenen ve program\u0131n mant\u0131ksal ak\u0131\u015f\u0131nda ele al\u0131nabilen durumlar i\u00e7in tasarlanm\u0131\u015ft\u0131r (\u00f6rne\u011fin, ge\u00e7ersiz kullan\u0131c\u0131 giri\u015fi, dosya okuma hatas\u0131). <code>panic<\/code> ise program\u0131n devam edemeyece\u011fi, genellikle programlama hatalar\u0131ndan kaynaklanan istisnai durumlar i\u00e7in saklanmal\u0131d\u0131r.<\/p>\n<p><b>S: <code>recover()<\/code> her yerde \u00e7al\u0131\u015f\u0131r m\u0131?<\/b><br \/>\nC: Hay\u0131r, <code>recover()<\/code> yaln\u0131zca <code>defer<\/code> edilmi\u015f bir fonksiyonun i\u00e7inde \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda bir paniki durdurabilir ve de\u011ferini d\u00f6nd\u00fcrebilir. <code>defer<\/code> d\u0131\u015f\u0131nda \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda <code>nil<\/code> d\u00f6nd\u00fcr\u00fcr ve hi\u00e7bir etkisi olmaz.<\/p>\n<p><b>S: Bir panik yakalanmazsa ne olur?<\/b><br \/>\nC: E\u011fer bir goroutine&#8217;de olu\u015fan panik, ayn\u0131 goroutine i\u00e7indeki hi\u00e7bir <code>defer<\/code> fonksiyonu taraf\u0131ndan <code>recover()<\/code> ile yakalanmazsa, Go \u00e7al\u0131\u015fma zaman\u0131 program\u0131 sonland\u0131r\u0131r ve hata mesaj\u0131yla birlikte y\u0131\u011f\u0131n izini standart hata \u00e7\u0131kt\u0131s\u0131na yazd\u0131r\u0131r.<\/p>\n<p><b>S: <code>recover<\/code> edilen bir panik tekrar panik edilebilir mi?<\/b><br \/>\nC: Evet, bir <code>defer<\/code> fonksiyonu i\u00e7inde <code>recover<\/code> ile bir paniki yakalad\u0131ktan sonra, yakalanan de\u011feri veya ba\u015fka bir de\u011feri kullanarak <code>panic(r)<\/code> \u00e7a\u011fr\u0131s\u0131 yaparak paniki tekrar tetikleyebilirsiniz. Bu, paniki daha \u00fcst seviye bir \u00e7a\u011f\u0131ran\u0131n ele almas\u0131na izin vermek istedi\u011finizde faydal\u0131 olabilir.<\/p>\n<p><b>S: Panik kurtarma mekanizmas\u0131 performans maliyeti yarat\u0131r m\u0131?<\/b><br \/>\nC: <code>defer<\/code> ifadelerinin kendisi hafif bir performans maliyeti ta\u015f\u0131r. <code>recover<\/code> \u00e7a\u011fr\u0131s\u0131n\u0131n kendisi genellikle \u00e7ok pahal\u0131 de\u011fildir, ancak panik durumunda y\u0131\u011f\u0131n izini (stack trace) olu\u015fturmak ve formatlamak (\u00f6zellikle <code>debug.Stack()<\/code> gibi fonksiyonlar kullan\u0131ld\u0131\u011f\u0131nda) \u00f6nemli bir maliyet yaratabilir. Bu nedenle, paniklerin s\u0131k s\u0131k olu\u015ftu\u011fu bir uygulama mimarisi, performans\u0131 olumsuz etkileyebilir.<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?\nGo programlama dilinde hata y\u00f6netimi genellikle error aray\u00fcz\u00fc arac\u0131l\u0131\u011f\u0131yla yap\u0131l\u0131r. Ancak, baz","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-38199","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Go&#039;da Panikler Nelerdir ve Neden \u00d6nemlidir? - Kodlar\u0131n Gizemli D\u00fcnyas\u0131<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Go&#039;da Panikler Nelerdir ve Neden \u00d6nemlidir?\" \/>\n<meta property=\"og:description\" content=\"Go&#039;da Panikler Nelerdir ve Neden \u00d6nemlidir? Go programlama dilinde hata y\u00f6netimi genellikle error aray\u00fcz\u00fc arac\u0131l\u0131\u011f\u0131yla yap\u0131l\u0131r. Ancak, baz\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-25T12:41:26+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?\",\"datePublished\":\"2026-01-25T12:41:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\"},\"wordCount\":1546,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#respond\"]}],\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\",\"name\":\"Go'da Panikler Nelerdir ve Neden \u00d6nemlidir? - Kodlar\u0131n Gizemli D\u00fcnyas\u0131\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2026-01-25T12:41:26+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\/\/fatihsoysal.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/\",\"name\":\"Fatihsoysal.com\",\"description\":\"Blog - Yaz\u0131l\u0131m D\u00fcnyas\u0131 Tecr\u00fcbelerim\",\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/fatihsoysal.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"tr\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\",\"name\":\"Fatih Soysal\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png\",\"contentUrl\":\"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png\",\"width\":512,\"height\":512,\"caption\":\"Fatih Soysal\"},\"logo\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/\"},\"description\":\"Kullan\u0131m ve kodlama m\u00fckemmeliyetini odak alan uygulamalar olu\u015fturma deneyimine sahip, profesyonel olarak 15+ y\u0131l \u00fczeri deneyime sahip bir yaz\u0131l\u0131m m\u00fchendisi.\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/author\/fatihsoysal\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Go'da Panikler Nelerdir ve Neden \u00d6nemlidir? - Kodlar\u0131n Gizemli D\u00fcnyas\u0131","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/","og_locale":"tr_TR","og_type":"article","og_title":"Go'da Panikler Nelerdir ve Neden \u00d6nemlidir?","og_description":"Go'da Panikler Nelerdir ve Neden \u00d6nemlidir? Go programlama dilinde hata y\u00f6netimi genellikle error aray\u00fcz\u00fc arac\u0131l\u0131\u011f\u0131yla yap\u0131l\u0131r. Ancak, baz","og_url":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/","og_site_name":"Kodlar\u0131n Gizemli D\u00fcnyas\u0131","article_published_time":"2026-01-25T12:41:26+00:00","author":"Fatih Soysal","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Fatih Soysal","Tahmini okuma s\u00fcresi":"11 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#article","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/"},"author":{"name":"Fatih Soysal","@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"headline":"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?","datePublished":"2026-01-25T12:41:26+00:00","mainEntityOfPage":{"@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/"},"wordCount":1546,"commentCount":0,"publisher":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#respond"]}],"copyrightYear":"2026","copyrightHolder":{"@id":"https:\/\/fatihsoysal.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/","url":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/","name":"Go'da Panikler Nelerdir ve Neden \u00d6nemlidir? - Kodlar\u0131n Gizemli D\u00fcnyas\u0131","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/#website"},"datePublished":"2026-01-25T12:41:26+00:00","breadcrumb":{"@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/fatihsoysal.com\/blog\/goda-panikler-nelerdir-ve-neden-onemlidir\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Anasayfa","item":"https:\/\/fatihsoysal.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Go&#8217;da Panikler Nelerdir ve Neden \u00d6nemlidir?"}]},{"@type":"WebSite","@id":"https:\/\/fatihsoysal.com\/blog\/#website","url":"https:\/\/fatihsoysal.com\/blog\/","name":"Fatihsoysal.com","description":"Blog - Yaz\u0131l\u0131m D\u00fcnyas\u0131 Tecr\u00fcbelerim","publisher":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/fatihsoysal.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"tr"},{"@type":["Person","Organization"],"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1","name":"Fatih Soysal","image":{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png","contentUrl":"https:\/\/fatihsoysal.com\/blog\/wp-content\/uploads\/2024\/04\/cropped-replicate-prediction-3kgg1hgjn5rgp0cf0p5tr0jw7w-1.png","width":512,"height":512,"caption":"Fatih Soysal"},"logo":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/image\/"},"description":"Kullan\u0131m ve kodlama m\u00fckemmeliyetini odak alan uygulamalar olu\u015fturma deneyimine sahip, profesyonel olarak 15+ y\u0131l \u00fczeri deneyime sahip bir yaz\u0131l\u0131m m\u00fchendisi.","url":"https:\/\/fatihsoysal.com\/blog\/author\/fatihsoysal\/"}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/posts\/38199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/comments?post=38199"}],"version-history":[{"count":1,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/posts\/38199\/revisions"}],"predecessor-version":[{"id":38200,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/posts\/38199\/revisions\/38200"}],"wp:attachment":[{"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/media?parent=38199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/categories?post=38199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fatihsoysal.com\/blog\/wp-json\/wp\/v2\/tags?post=38199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}