{"id":105,"date":"2026-08-21T16:36:57","date_gmt":"2026-08-21T13:36:57","guid":{"rendered":"https:\/\/onuryasar.online\/blog\/?p=105"},"modified":"2026-08-21T16:43:41","modified_gmt":"2026-08-21T13:43:41","slug":"production-ortamlarinda-root-cause-analysis-rca-yaklasimi","status":"publish","type":"post","link":"https:\/\/onuryasar.online\/blog\/production-ortamlarinda-root-cause-analysis-rca-yaklasimi\/","title":{"rendered":"Production Ortamlar\u0131nda Root Cause Analysis (RCA) Yakla\u015f\u0131m\u0131"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/onuryasar.online\/blog\/wp-content\/uploads\/2026\/08\/image-1024x683.png\" alt=\"\" class=\"wp-image-106\" srcset=\"https:\/\/onuryasar.online\/blog\/wp-content\/uploads\/2026\/08\/image-1024x683.png 1024w, https:\/\/onuryasar.online\/blog\/wp-content\/uploads\/2026\/08\/image-300x200.png 300w, https:\/\/onuryasar.online\/blog\/wp-content\/uploads\/2026\/08\/image-768x512.png 768w, https:\/\/onuryasar.online\/blog\/wp-content\/uploads\/2026\/08\/image.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Production ortam\u0131nda bir problem ya\u015fand\u0131\u011f\u0131nda ilk refleksimiz genellikle sistemi tekrar \u00e7al\u0131\u015f\u0131r ve stabil hale getirmek olur. API&#8217;ler 500 hatas\u0131 d\u00f6nd\u00fcr\u00fcyorsa API taraf\u0131n\u0131 inceleriz, gecikmeler artm\u0131\u015fsa ilgili servisleri ve altyap\u0131y\u0131 kontrol ederiz, veritaban\u0131 timeout veriyorsa veritaban\u0131na odaklan\u0131r\u0131z.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bunlar\u0131n hepsi gerekli ad\u0131mlar olsa da asl\u0131nda s\u00fcrecin sadece ba\u015flang\u0131c\u0131d\u0131r. \u00c7\u00fcnk\u00fc sistem tekrar sa\u011fl\u0131kl\u0131 \u00e7al\u0131\u015fmaya ba\u015flam\u0131\u015f olsa bile, problemi ortaya \u00e7\u0131karan as\u0131l neden h\u00e2l\u00e2 orada duruyor olabilir. E\u011fer yaln\u0131zca g\u00f6rd\u00fc\u011f\u00fcm\u00fcz semptomlar\u0131 d\u00fczeltirsek, benzer ko\u015fullar olu\u015ftu\u011funda ayn\u0131 sorun tekrar ya\u015fanabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130\u015fte tam bu noktada Root Cause Analysis (RCA) devreye giriyor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Benim i\u00e7in RCA, loglarda g\u00f6r\u00fclen ilk hatay\u0131 bulup ona k\u00f6k neden demekten ibaret de\u011fil. Olay\u0131n ortaya \u00e7\u0131kmas\u0131na sebep olan t\u00fcm zinciri anlamak, ger\u00e7ek nedeni tespit etmek ve ayn\u0131 problemin tekrar ya\u015fanma ihtimalini azaltacak aksiyonlar\u0131 almak anlam\u0131na geliyor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RCA Neden \u00d6nemlidir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Production ortam\u0131nda kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z ilk \u015fey \u00e7o\u011fu zaman k\u00f6k neden de\u011fil, bir semptomdur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">API&#8217;nin yava\u015flamas\u0131, hata oranlar\u0131n\u0131n artmas\u0131 veya veritaban\u0131 timeout&#8217;lar\u0131 bize d\u0131\u015far\u0131dan ne oldu\u011funu g\u00f6sterir. Ancak bunlar neden oldu\u011funu a\u00e7\u0131klamaz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu y\u00fczden RCA s\u00fcrecinde benim i\u00e7in en \u00f6nemli soru:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cNe bozuldu?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">de\u011fil,<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cNeden bozuldu?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">sorusudur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c7\u00fcnk\u00fc ar\u0131zalanan bir bile\u015fen \u00e7o\u011fu zaman sistemin ba\u015fka bir noktas\u0131ndaki problemin sonucudur. \u00d6rne\u011fin API gecikmesinin artmas\u0131; yava\u015f \u00e7al\u0131\u015fan bir sorgudan, t\u00fckenen connection pool&#8217;lardan, beklenmeyen trafik art\u0131\u015f\u0131ndan veya kapasite planlama eksikli\u011finden kaynaklan\u0131yor olabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu nedenle bir problemi incelerken \u015fu ak\u0131\u015f\u0131 takip etmeye \u00e7al\u0131\u015f\u0131r\u0131m:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ne oldu? \u2192 Neden oldu? \u2192 O neden olu\u015ftu? \u2192 Neden daha \u00f6nce fark edilmedi? \u2192 Tekrar ya\u015fanmamas\u0131 i\u00e7in ne yap\u0131labilir?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu yakla\u015f\u0131m RCA&#8217;y\u0131 yaln\u0131zca bir problem \u00e7\u00f6zme y\u00f6ntemi olmaktan \u00e7\u0131kar\u0131p sistem g\u00fcvenilirli\u011fini art\u0131ran bir s\u00fcrece d\u00f6n\u00fc\u015ft\u00fcr\u00fcyor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Problemi Tespit Etmek<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130lk ad\u0131m, sistemde ola\u011fan d\u0131\u015f\u0131 bir durum oldu\u011funu fark etmektir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Production ortamlar\u0131nda bu genellikle metrikler ve alarmlar sayesinde ger\u00e7ekle\u015fir. Hata oranlar\u0131n\u0131n y\u00fckselmesi, gecikmelerin artmas\u0131, CPU veya bellek kullan\u0131m\u0131ndaki anormal de\u011fi\u015fimler ilk sinyalleri verir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bir metri\u011fin y\u00fckseldi\u011fini g\u00f6rd\u00fc\u011f\u00fcmde do\u011frudan son de\u011fere odaklanmam. \u00d6ncelikle sistemin normal davran\u0131\u015f\u0131yla kar\u015f\u0131la\u015ft\u0131r\u0131r\u0131m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>De\u011fi\u015fim ne zaman ba\u015flad\u0131?<\/li>\n\n\n\n<li>Ani bir s\u0131\u00e7rama m\u0131 ya\u015fand\u0131 yoksa kademeli bir art\u0131\u015f m\u0131 oldu?<\/li>\n\n\n\n<li>Ayn\u0131 zaman diliminde ba\u015fka hangi metrikler de\u011fi\u015fti?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bu sorular olay\u0131n zaman \u00e7izelgesini olu\u015fturmam\u0131 ve ilk ipu\u00e7lar\u0131n\u0131 yakalamam\u0131 sa\u011flar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Etki Alan\u0131n\u0131 Belirlemek<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sorunun tespit edilmesinden sonra ikinci ad\u0131m kapsam\u0131n\u0131 anlamakt\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Genellikle \u015fu sorulara cevap arar\u0131m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sorun tek bir endpoint&#8217;i mi etkiliyor?<\/li>\n\n\n\n<li>Tek bir servis mi etkilenmi\u015f durumda?<\/li>\n\n\n\n<li>Belirli bir m\u00fc\u015fteri veya tenant grubunda m\u0131 ya\u015fan\u0131yor?<\/li>\n\n\n\n<li>B\u00f6lgesel bir problem mi?<\/li>\n\n\n\n<li>Yoksa t\u00fcm sistem mi etkileniyor?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Bu a\u015fama olduk\u00e7a \u00f6nemlidir. \u00c7\u00fcnk\u00fc yaln\u0131zca tek bir bile\u015fende ya\u015fanan problemi t\u00fcm sistemde aramak gereksiz karma\u015fa yaratabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Buna kar\u015f\u0131l\u0131k birden fazla serviste benzer belirtiler g\u00f6r\u00fcl\u00fcyorsa, ortak kullan\u0131lan bir ba\u011f\u0131ml\u0131l\u0131k veya altyap\u0131 katman\u0131 sorunun kayna\u011f\u0131 olabilir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Loglar\u0131, Metrikleri ve Trace&#8217;leri Birlikte De\u011ferlendirmek<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Incident y\u00f6netiminde ka\u00e7\u0131nmaya \u00e7al\u0131\u015ft\u0131\u011f\u0131m hatalardan biri yaln\u0131zca tek bir veri kayna\u011f\u0131na g\u00fcvenmektir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c7\u00fcnk\u00fc her ara\u00e7 farkl\u0131 bir soruya cevap verir:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Metrikler<\/strong>, sistemin nas\u0131l davrand\u0131\u011f\u0131n\u0131 g\u00f6sterir.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Latency<\/li>\n\n\n\n<li>Error Rate<\/li>\n\n\n\n<li>CPU Kullan\u0131m\u0131<\/li>\n\n\n\n<li>Bellek Kullan\u0131m\u0131<\/li>\n\n\n\n<li>Veritaban\u0131 Ba\u011flant\u0131lar\u0131<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Loglar<\/strong>, uygulama i\u00e7erisinde neler ya\u015fand\u0131\u011f\u0131n\u0131 anlamam\u0131z\u0131 sa\u011flar.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hatalar<\/li>\n\n\n\n<li>Timeout&#8217;lar<\/li>\n\n\n\n<li>Ba\u011flant\u0131 problemleri<\/li>\n\n\n\n<li>Uygulama olaylar\u0131<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Distributed Trace&#8217;ler<\/strong> ise bir iste\u011fin sistem i\u00e7erisindeki yolculu\u011funu g\u00f6sterir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6zellikle mikroservis mimarilerinde bir iste\u011fin hangi servislerde, cache katmanlar\u0131nda, kuyruklarda veya veritabanlar\u0131nda zaman harcad\u0131\u011f\u0131n\u0131 g\u00f6rmek olduk\u00e7a de\u011ferlidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Benim i\u00e7in as\u0131l de\u011fer bu verileri ayr\u0131 ayr\u0131 incelemekten de\u011fil, birbirleriyle ili\u015fkilendirmekten gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bir metrik gecikmenin artt\u0131\u011f\u0131n\u0131 g\u00f6sterebilir. Trace gecikmenin hangi bile\u015fenden kaynakland\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131karabilir. Log ise o noktada ya\u015fanan olay\u0131n detay\u0131n\u0131 verebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00dc\u00e7\u00fc birlikte kullan\u0131ld\u0131\u011f\u0131nda \u00e7ok daha net bir tablo ortaya \u00e7\u0131kar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Ger\u00e7ek K\u00f6k Nedeni Bulmak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RCA&#8217;n\u0131n en kritik a\u015famas\u0131 buras\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu noktada \u00f6zellikle \u015fu ayr\u0131m\u0131 yapmak gerekir:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Semptom \u2260 K\u00f6k Neden<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Semptom, problemin g\u00f6r\u00fcnen sonucudur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00f6k neden ise o sonucun ortaya \u00e7\u0131kmas\u0131na sebep olan temel etkendir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin y\u00fcksek API gecikmesi bir semptomdur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Distributed trace analizi sonucunda zaman\u0131n b\u00fcy\u00fck b\u00f6l\u00fcm\u00fcn\u00fcn PostgreSQL taraf\u0131nda harcand\u0131\u011f\u0131n\u0131 g\u00f6rebiliriz. Ancak &#8220;veritaban\u0131 yava\u015f&#8221; demek h\u00e2l\u00e2 yeterli de\u011fildir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ara\u015ft\u0131rmaya devam etmeliyiz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Belki sorgu b\u00fcy\u00fck bir veri seti \u00fczerinde Sequential Scan \u00e7al\u0131\u015ft\u0131r\u0131yordur. Bunun sebebi eksik bir indeks olabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu durumda teknik k\u00f6k neden art\u0131k daha net hale gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ancak burada da durmamak gerekir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bir sonraki soru \u015fudur:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Eksik indeks neden production&#8217;a kadar ula\u015fabildi?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Belki migration ger\u00e7ek veri boyutlar\u0131nda test edilmedi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Belki performans testleri eksikti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Belki kod veya migration inceleme s\u00fcre\u00e7leri bu t\u00fcr problemleri yakalayacak kadar kapsaml\u0131 de\u011fildi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Olay zinciri \u015fu \u015fekilde olabilir:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Semptom \u2192 Y\u00fcksek API gecikmesi<br>Anl\u0131k Sebep \u2192 Yava\u015f veritaban\u0131 sorgusu<br>Teknik K\u00f6k Neden \u2192 Eksik indeks<br>Sistemsel K\u00f6k Neden \u2192 Yetersiz performans testleri<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Bu ayr\u0131m olduk\u00e7a \u00f6nemlidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c7\u00fcnk\u00fc eksik indeksi eklemek mevcut problemi \u00e7\u00f6zer ancak benzer hatalar\u0131n production&#8217;a \u00e7\u0131kmas\u0131n\u0131 engellemez.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu nedenle RCA s\u0131ras\u0131nda ilk mant\u0131kl\u0131 a\u00e7\u0131klamada durmamaya \u00e7al\u0131\u015f\u0131r\u0131m. S\u00fcrekli \u015fu sorular\u0131 sorar\u0131m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>API neden yava\u015f?<\/li>\n\n\n\n<li>Hangi bile\u015fen sorumlu?<\/li>\n\n\n\n<li>O bile\u015fen neden yava\u015f?<\/li>\n\n\n\n<li>Bu durum neden olu\u015ftu?<\/li>\n\n\n\n<li>Production&#8217;a nas\u0131l ula\u015fabildi?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">As\u0131l de\u011fer bu sorular\u0131n sonunda ortaya \u00e7\u0131kar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u00d6nce Sistemi Stabil Hale Getirmek<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00f6k neden ara\u015ft\u0131r\u0131l\u0131rken sistemin \u00e7al\u0131\u015fmaya devam etmesi gerekir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu noktada mitigation devreye girer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Probleme g\u00f6re \u015fu y\u00f6ntemlerden biri uygulanabilir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rollback<\/li>\n\n\n\n<li>Trafik azaltma<\/li>\n\n\n\n<li>Yatay veya dikey \u00f6l\u00e7eklendirme<\/li>\n\n\n\n<li>Circuit Breaker<\/li>\n\n\n\n<li>Cache kullan\u0131m\u0131<\/li>\n\n\n\n<li>Rate Limiting<\/li>\n\n\n\n<li>Feature Flag<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Burada \u00f6nemli olan \u015fu ayr\u0131md\u0131r:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mitigation \u2260 Kal\u0131c\u0131 \u00c7\u00f6z\u00fcm<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mitigation&#8217;\u0131n amac\u0131 sistemi tekrar stabil hale getirmek ve kullan\u0131c\u0131 \u00fczerindeki etkiyi azaltmakt\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kal\u0131c\u0131 \u00e7\u00f6z\u00fcm ise problemi olu\u015fturan nedeni ortadan kald\u0131r\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin problemli bir deployment&#8217;\u0131 geri almak sistemi h\u0131zla toparlayabilir. Ancak deployment&#8217;\u0131n neden problemi tetikledi\u011fini a\u00e7\u0131klamaz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu y\u00fczden mitigation benim g\u00f6z\u00fcmde s\u00fcrecin sonu de\u011fil, ba\u015flang\u0131c\u0131d\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Kal\u0131c\u0131 \u00c7\u00f6z\u00fcm\u00fc Uygulamak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sistem stabil hale geldikten ve k\u00f6k neden netle\u015ftikten sonra s\u0131ra kal\u0131c\u0131 \u00e7\u00f6z\u00fcme gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Burada ama\u00e7 semptomu gizlemek de\u011fil, ger\u00e7ek nedeni ortadan kald\u0131rmakt\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin yava\u015f \u00e7al\u0131\u015fan bir sorgu nedeniyle timeout ya\u015fan\u0131yorsa timeout s\u00fcresini art\u0131rmak problemi ge\u00e7ici olarak gizleyebilir. Ancak performans sorununu \u00e7\u00f6zmez.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kal\u0131c\u0131 \u00e7\u00f6z\u00fcm;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Query optimizasyonu<\/li>\n\n\n\n<li>\u0130ndeks optimizasyonu<\/li>\n\n\n\n<li>Connection Pool ayarlar\u0131<\/li>\n\n\n\n<li>Kod de\u011fi\u015fiklikleri<\/li>\n\n\n\n<li>Mimari iyile\u015ftirmeler<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u015feklinde olabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6nemli olan \u00e7\u00f6z\u00fcm\u00fcn RCA s\u0131ras\u0131nda bulunan k\u00f6k neden ile do\u011frudan ba\u011flant\u0131l\u0131 olmas\u0131d\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. Tekrar Ya\u015fanmamas\u0131n\u0131 Sa\u011flamak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RCA&#8217;n\u0131n \u00e7o\u011fu zaman g\u00f6z ard\u0131 edilen k\u0131sm\u0131 buras\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Problemi \u00e7\u00f6zd\u00fckten sonra ticket&#8217;\u0131 kapat\u0131p devam etmek kolayd\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ancak iyi bir RCA \u015fu soruyu da sormal\u0131d\u0131r:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cBu problemin tekrar ya\u015fanmamas\u0131 i\u00e7in neyi de\u011fi\u015ftirebiliriz?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Bunun cevab\u0131 olaya g\u00f6re de\u011fi\u015febilir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monitoring geli\u015ftirmeleri<\/li>\n\n\n\n<li>Yeni alarmlar<\/li>\n\n\n\n<li>Otomatik testler<\/li>\n\n\n\n<li>Load testleri<\/li>\n\n\n\n<li>Kapasite planlama s\u00fcre\u00e7leri<\/li>\n\n\n\n<li>Code Review standartlar\u0131<\/li>\n\n\n\n<li>Deployment kontrolleri<\/li>\n\n\n\n<li>Mimari iyile\u015ftirmeler<\/li>\n\n\n\n<li>Runbook&#8217;lar<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin problem ger\u00e7ek veri boyutlar\u0131yla test yap\u0131lmad\u0131\u011f\u0131 i\u00e7in production&#8217;a \u00e7\u0131kt\u0131ysa yaln\u0131zca sorguyu d\u00fczeltmek yeterli de\u011fildir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu hatan\u0131n production&#8217;a ula\u015fmas\u0131na izin veren s\u00fcreci de iyile\u015ftirmek gerekir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As\u0131l fark burada ortaya \u00e7\u0131kar:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bir olay\u0131 d\u00fczeltmek ile o olay\u0131 \u00fcreten sistemi geli\u015ftirmek ayn\u0131 \u015fey de\u011fildir.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RCA S\u00fcrecinin \u00d6zeti<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Benim yakla\u015f\u0131m\u0131ma g\u00f6re RCA s\u00fcreci \u015fu \u015fekilde \u00f6zetlenebilir:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Detect \u2192 Scope \u2192 Correlate \u2192 Identify \u2192 Mitigate \u2192 Fix \u2192 Prevent<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ger\u00e7ek hayatta bu ad\u0131mlar her zaman do\u011frusal ilerlemez. Yeni bilgiler ortaya \u00e7\u0131kt\u0131k\u00e7a \u00f6nceki varsay\u0131mlar de\u011fi\u015febilir ve baz\u0131 a\u015famalara geri d\u00f6nmek gerekebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6nemli olan s\u00fcre\u00e7 boyunca neden-sonu\u00e7 ili\u015fkisini kaybetmemektir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sorular zamanla:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cNe oldu?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">sorusundan,<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cNeden oldu?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">sorusuna,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ve sonunda,<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u201cBu olay\u0131n ya\u015fanmas\u0131na sistem veya s\u00fcre\u00e7 nas\u0131l izin verdi?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">sorusuna evrilmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Genellikle en de\u011ferli m\u00fchendislik geli\u015ftirmeleri de bu son sorunun cevab\u0131nda bulunur.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Sonu\u00e7<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Root Cause Analysis benim i\u00e7in yaln\u0131zca production ortam\u0131ndaki bir problemi \u00e7\u00f6zmekten ibaret de\u011fil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As\u0131l ama\u00e7, problemin neden ortaya \u00e7\u0131kt\u0131\u011f\u0131n\u0131 anlamak, sistemi tekrar stabil hale getirmek, k\u00f6k nedeni ortadan kald\u0131rmak ve benzer hatalar\u0131n tekrar ya\u015fanma ihtimalini azaltmakt\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130yi bir RCA; metrikler ve alarmlarla ba\u015flar, etki alan\u0131n\u0131 belirler, loglar, metrikler ve distributed trace&#8217;leri birlikte de\u011ferlendirir ve semptom ile k\u00f6k nedeni birbirinden ay\u0131r\u0131r. Ard\u0131ndan kal\u0131c\u0131 \u00e7\u00f6z\u00fcm uygulan\u0131r ve tekrar ya\u015fanmamas\u0131 i\u00e7in s\u00fcre\u00e7ler geli\u015ftirilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c7\u00fcnk\u00fc production ortamlar\u0131nda sistemi tekrar aya\u011fa kald\u0131rmak i\u015fin yaln\u0131zca bir k\u0131sm\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As\u0131l hedef, sistemin neden ba\u015far\u0131s\u0131z oldu\u011funu anlamak ve bu deneyim sayesinde onu daha dayan\u0131kl\u0131 hale getirmektir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Kaynak yaz\u0131lar ve ilginizi \u00e7ekebilecek linkler<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Backend D\u00fcnyas\u0131nda Go ve yenilikleri<br><a href=\"https:\/\/onuryasar.online\/blog\/modern-backend-dunyasinda-go-go-1-22-1-23-ve-1-24-yenilikleri-ile-mikroservis-mimarisi\/\">https:\/\/onuryasar.online\/blog\/modern-backend-dunyasinda-go-go-1-22-1-23-ve-1-24-yenilikleri-ile-mikroservis-mimarisi\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0130lginizi \u00e7ekebilecek major cloudflare outage RCA raporu<br><a href=\"https:\/\/blog.cloudflare.com\/18-november-2025-outage\">https:\/\/blog.cloudflare.com\/18-november-2025-outage<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Production ortam\u0131nda bir problem ya\u015fand\u0131\u011f\u0131nda ilk refleksimiz genellikle sistemi tekrar \u00e7al\u0131\u015f\u0131r ve stabil hale getirmek olur. API&#8217;ler 500 hatas\u0131 d\u00f6nd\u00fcr\u00fcyorsa API taraf\u0131n\u0131 inceleriz, gecikmeler artm\u0131\u015fsa&#8230;<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/onuryasar.online\/blog\/production-ortamlarinda-root-cause-analysis-rca-yaklasimi\/\">Devam\u0131n\u0131 Oku<span class=\"screen-reader-text\">Production Ortamlar\u0131nda Root Cause Analysis (RCA) Yakla\u015f\u0131m\u0131<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":106,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[],"class_list":["post-105","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-devops","entry"],"_links":{"self":[{"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/posts\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":1,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/posts\/105\/revisions"}],"predecessor-version":[{"id":107,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/posts\/105\/revisions\/107"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/media\/106"}],"wp:attachment":[{"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/media?parent=105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/categories?post=105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onuryasar.online\/blog\/wp-json\/wp\/v2\/tags?post=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}