Modern web uygulamalar\u0131n\u0131n ve y\u00fcksek trafi\u011fe sahip sitelerin ard\u0131ndaki temel g\u00fc\u00e7lerden biri olan Nginx (engine-x olarak telaffuz edilir), g\u00fcn\u00fcm\u00fcz\u00fcn dijital d\u00fcnyas\u0131nda vazge\u00e7ilmez bir ara\u00e7 haline gelmi\u015ftir. Bu rehberde, Nginx’in ne oldu\u011funu, neden bu kadar pop\u00fcler oldu\u011funu, nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve web altyap\u0131lar\u0131n\u0131zda nas\u0131l etkin bir \u015fekilde kullanabilece\u011finizi detayl\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n
Nginx, ilk olarak 2004 y\u0131l\u0131nda Igor Sysoev taraf\u0131ndan y\u00fcksek e\u015fzamanl\u0131 ba\u011flant\u0131lar\u0131 y\u00f6netmek ve y\u00fcksek performansl\u0131 statik i\u00e7erik sunmak amac\u0131yla geli\u015ftirilmi\u015f, a\u00e7\u0131k kaynakl\u0131 bir web sunucusu yaz\u0131l\u0131m\u0131d\u0131r. Ancak zamanla yetenekleri sadece bir web sunucusu olman\u0131n \u00f6tesine ge\u00e7erek, ters proxy (reverse proxy), y\u00fck dengeleyici (load balancer), HTTP \u00f6nbellekleyici (HTTP cache) ve API gateway gibi kritik roller \u00fcstlenmi\u015ftir. Kaynak verimlili\u011fi, y\u00fcksek performans ve \u00f6l\u00e7eklenebilirlik sunan olay tabanl\u0131 (event-driven) mimarisi sayesinde, d\u00fcnya genelindeki en yo\u011fun web sitelerinin ve uygulamalar\u0131n\u0131n b\u00fcy\u00fck bir k\u0131sm\u0131na g\u00fc\u00e7 vermektedir. Apache gibi di\u011fer geleneksel sunuculara k\u0131yasla daha az kaynak t\u00fcketimiyle daha fazla iste\u011fi ayn\u0131 anda i\u015fleyebilme yetene\u011fi, Nginx’i \u00f6zellikle mikroservis mimarileri ve bulut tabanl\u0131 da\u011f\u0131t\u0131mlar i\u00e7in ideal bir se\u00e7im haline getirmektedir.<\/p>\n
Nginx’in benzersiz performans\u0131 ve esnekli\u011fi, alt\u0131nda yatan mimariden gelmektedir. Geleneksel sunucular\u0131n her ba\u011flant\u0131 i\u00e7in yeni bir s\u00fcre\u00e7 veya i\u015f par\u00e7ac\u0131\u011f\u0131 olu\u015fturdu\u011fu “s\u00fcre\u00e7 tabanl\u0131” veya “i\u015f par\u00e7ac\u0131\u011f\u0131 tabanl\u0131” modellerin aksine, Nginx “olay tabanl\u0131” (event-driven) ve “asenkron” bir mimariye sahiptir.<\/p>\n
Nginx’in kalbinde yatan olay tabanl\u0131 mimari, t\u00fcm a\u011f i\u015flemlerini tek bir i\u015f par\u00e7ac\u0131\u011f\u0131nda (thread) veya s\u00fcre\u00e7te (process) y\u00f6netir. Bu, Nginx’in \u00e7ok say\u0131da e\u015fzamanl\u0131 ba\u011flant\u0131y\u0131, her ba\u011flant\u0131 i\u00e7in ayr\u0131 bir s\u00fcre\u00e7 ba\u015flatma ihtiyac\u0131 duymadan, son derece verimli bir \u015fekilde ele almas\u0131n\u0131 sa\u011flar. Her ba\u011flant\u0131 bir olay olarak kabul edilir ve Nginx bu olaylar\u0131 non-blocking (engellemeyen) I\/O y\u00f6ntemleri kullanarak i\u015fler. Yani, bir ba\u011flant\u0131n\u0131n veri beklemesi di\u011fer ba\u011flant\u0131lar\u0131n i\u015flenmesini engellemez. Bu yap\u0131, \u00e7ok daha az bellek ve CPU kayna\u011f\u0131 t\u00fcketirken, \u00e7ok daha y\u00fcksek i\u015flem hacmi (throughput) ve daha d\u00fc\u015f\u00fck gecikme s\u00fcresi (latency) sunar.<\/p>\n
Nginx, master-worker modeliyle \u00e7al\u0131\u015f\u0131r:<\/p>\n
Nginx’in \u00e7ok y\u00f6nl\u00fcl\u00fc\u011f\u00fc, onu \u00e7e\u015fitli rollerde kullan\u0131\u015fl\u0131 k\u0131lar:<\/p>\n
Nginx’i kullanmaya ba\u015flamak olduk\u00e7a basittir. \u00c7o\u011fu Linux da\u011f\u0131t\u0131m\u0131nda paket y\u00f6neticileri arac\u0131l\u0131\u011f\u0131yla kolayca kurulabilir.<\/p>\n
A\u015fa\u011f\u0131daki komutlar\u0131 kullanarak Nginx’i Ubuntu veya Debian tabanl\u0131 bir sisteme kurabilirsiniz:<\/p>\n
\nsudo apt update\nsudo apt install nginx\nsudo systemctl start nginx\nsudo systemctl enable nginx\n<\/code><\/pre>\nBu komutlar s\u0131ras\u0131yla paket listesini g\u00fcnceller, Nginx’i kurar, ba\u015flat\u0131r ve sistem ba\u015flang\u0131c\u0131nda otomatik olarak ba\u015flamas\u0131n\u0131 sa\u011flar. Kurulumdan sonra, taray\u0131c\u0131n\u0131zdan sunucunuzun IP adresine gitti\u011finizde “Welcome to nginx!” sayfas\u0131n\u0131 g\u00f6rmelisiniz.<\/p>\n
Konfig\u00fcrasyon Dosyalar\u0131<\/h3>\n
Nginx’in ana konfig\u00fcrasyon dosyas\u0131 genellikle \/etc\/nginx\/nginx.conf<\/code> konumunda bulunur. Siteye \u00f6zel konfig\u00fcrasyonlar ise \/etc\/nginx\/sites-available\/<\/code> dizininde olu\u015fturulur ve \/etc\/nginx\/sites-enabled\/<\/code> dizinine sembolik ba\u011flant\u0131lar (symlinks) olu\u015fturularak etkinle\u015ftirilir.<\/p>\nTemel nginx.conf<\/code> Yap\u0131s\u0131<\/h3>\nAna konfig\u00fcrasyon dosyas\u0131, Nginx’in genel davran\u0131\u015f\u0131n\u0131 belirler. \u0130\u015fte basitle\u015ftirilmi\u015f bir \u00f6rnek:<\/p>\n
\nuser www-data; # Nginx'in hangi kullan\u0131c\u0131 alt\u0131nda \u00e7al\u0131\u015faca\u011f\u0131n\u0131 belirtir\nworker_processes auto; # Worker s\u00fcre\u00e7lerinin say\u0131s\u0131n\u0131 CPU \u00e7ekirde\u011fi say\u0131s\u0131na g\u00f6re otomatik ayarlar\nerror_log \/var\/log\/nginx\/error.log warn; # Hata logu ve seviyesi\npid \/var\/run\/nginx.pid; # Nginx ana s\u00fcrecinin PID dosyas\u0131n\u0131n yolu\n\nevents {\n worker_connections 1024; # Her worker s\u00fcrecinin ayn\u0131 anda i\u015fleyebilece\u011fi maksimum ba\u011flant\u0131 say\u0131s\u0131\n}\n\nhttp {\n include \/etc\/nginx\/mime.types; # MIME tiplerini i\u00e7eren dosya\n default_type application\/octet-stream; # Bilinmeyen dosya tipleri i\u00e7in varsay\u0131lan\n\n log_format main '$remote_addr - $remote_user [$time_local] \"$request\" '\n '$status $body_bytes_sent \"$http_referer\" '\n '\"$http_user_agent\" \"$http_x_forwarded_for\"'; # Eri\u015fim logu format\u0131\n\n access_log \/var\/log\/nginx\/access.log main; # Eri\u015fim logu ve format\u0131\n\n sendfile on; # Dosya g\u00f6nderme performans\u0131n\u0131 art\u0131r\u0131r\n tcp_nopush on; # TCP paketleme optimizasyonu\n tcp_nodelay on; # TCP paketleme optimizasyonu\n keepalive_timeout 65; # Keep-alive ba\u011flant\u0131lar\u0131n\u0131n a\u00e7\u0131k kalma s\u00fcresi\n types_hash_max_size 2048; # MIME tipleri i\u00e7in hash tablosu boyutu\n\n include \/etc\/nginx\/conf.d\/*.conf; # Ek konfig\u00fcrasyon dosyalar\u0131n\u0131 dahil eder\n include \/etc\/nginx\/sites-enabled\/*; # Etkinle\u015ftirilmi\u015f site konfig\u00fcrasyonlar\u0131n\u0131 dahil eder\n}\n<\/code><\/pre>\nBasit Bir Sanal Host (Server Block) Konfig\u00fcrasyonu<\/h3>\n
Bir web sitesini Nginx ile bar\u0131nd\u0131rmak i\u00e7in bir “server block” (sanal host) olu\u015fturman\u0131z gerekir. Bu, sitenizin hangi domain ad\u0131 \u00fczerinden, hangi portta ve hangi dizinden yay\u0131n yapaca\u011f\u0131n\u0131 tan\u0131mlar.<\/p>\n
\u00d6ncelikle, \/etc\/nginx\/sites-available\/<\/code> dizininde yeni bir dosya olu\u015fturun, \u00f6rne\u011fin example.com<\/code>:<\/p>\n\n\/etc\/nginx\/sites-available\/example.com<\/h2>\nserver {\n listen 80; # HTTP isteklerini 80 portundan dinle\n listen [::]:80; # IPv6 i\u00e7in 80 portundan dinle\n server_name example.com www.example.com; # Bu server blo\u011funun hangi domain adlar\u0131 i\u00e7in ge\u00e7erli oldu\u011funu belirtir\n root \/var\/www\/example.com; # Web sitesi dosyalar\u0131n\u0131n k\u00f6k dizini\n index index.html index.htm index.nginx-debian.html; # Varsay\u0131lan a\u00e7\u0131l\u0131\u015f dosyalar\u0131\n\n location \/ {\n # E\u011fer istenen dosya veya dizin yoksa, 404 hatas\u0131 d\u00f6nd\u00fcr\n try_files $uri $uri\/ =404;\n }\n\n # Hata sayfalar\u0131n\u0131 \u00f6zelle\u015ftirme\n error_page 404 \/404.html;\n location = \/404.html {\n internal;\n }\n\n # SSL\/TLS i\u00e7in bir \u00f6rnek (yorum sat\u0131r\u0131 yap\u0131lm\u0131\u015ft\u0131r, pratik bilgilerde daha detayl\u0131)\n # listen 443 ssl;\n # listen [::]:443 ssl;\n # ssl_certificate \/etc\/letsencrypt\/live\/example.com\/fullchain.pem;\n # ssl_certificate_key \/etc\/letsencrypt\/live\/example.com\/privkey.pem;\n # return 301 https:\/\/$host$request_uri; # HTTP'den HTTPS'e y\u00f6nlendirme\n}\n<\/code><\/pre>\n
Bu konfig\u00fcrasyonu etkinle\u015ftirmek i\u00e7in, sites-enabled<\/code> dizinine bir sembolik ba\u011flant\u0131 olu\u015fturun:<\/p>\n\nsudo ln -s \/etc\/nginx\/sites-available\/example.com \/etc\/nginx\/sites-enabled\/\n<\/code><\/pre>\nDe\u011fi\u015fiklikleri uygulamadan \u00f6nce konfig\u00fcrasyonunuzu test edin:<\/p>\n
\nsudo nginx -t\n<\/code><\/pre>\nE\u011fer test ba\u015far\u0131l\u0131 olursa, Nginx’i yeniden y\u00fckleyin:<\/p>\n
\nsudo systemctl reload nginx\n<\/code><\/pre>\nArt\u0131k example.com<\/code> adresine yap\u0131lan istekler \/var\/www\/example.com<\/code> dizinindeki dosyalar taraf\u0131ndan sunulacakt\u0131r.<\/p>\nNginx ile Geli\u015fmi\u015f Kullan\u0131m Senaryolar\u0131 ve Pratik \u0130pu\u00e7lar\u0131<\/h2>\n
Nginx’in ger\u00e7ek g\u00fcc\u00fc, geli\u015fmi\u015f kullan\u0131m senaryolar\u0131nda ortaya \u00e7\u0131kar.<\/p>\n
Ters Proxy (Reverse Proxy)<\/h3>\n
Nginx’i bir uygulama sunucusunun (\u00f6rne\u011fin, Node.js, Python Flask, Java Spring Boot) \u00f6n\u00fcnde ters proxy olarak kullanmak, performans\u0131 art\u0131r\u0131r, g\u00fcvenli\u011fi sa\u011flar ve esneklik sunar.<\/p>\n
\nserver {\n listen 80;\n server_name api.example.com; # API domain ad\u0131n\u0131z\n\n location \/ {\n proxy_pass http:\/\/localhost:3000; # Uygulama sunucunuzun \u00e7al\u0131\u015ft\u0131\u011f\u0131 adres ve port\n proxy_set_header Host $host; # Orijinal Host ba\u015fl\u0131\u011f\u0131n\u0131 arka uca iletir\n proxy_set_header X-Real-IP $remote_addr; # \u0130stemcinin ger\u00e7ek IP adresini iletir\n proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # Proxy zincirindeki t\u00fcm IP'leri iletir\n proxy_set_header X-Forwarded-Proto $scheme; # HTTP mi HTTPS mi oldu\u011funu iletir\n }\n}\n<\/code><\/pre>\nBu konfig\u00fcrasyon, api.example.com<\/code> adresine gelen t\u00fcm istekleri localhost:3000<\/code> adresinde \u00e7al\u0131\u015fan uygulama sunucusuna y\u00f6nlendirir.<\/p>\nY\u00fck Dengeleme (Load Balancing)<\/h3>\n
Y\u00fcksek trafikli uygulamalar i\u00e7in y\u00fck dengeleme vazge\u00e7ilmezdir. Nginx, gelen istekleri birden fazla arka u\u00e7 sunucusu aras\u0131nda da\u011f\u0131tabilir.<\/p>\n
\nupstream backend_servers {\n # Y\u00fck dengeleme algoritmalar\u0131:\n # round-robin (varsay\u0131lan): S\u0131rayla da\u011f\u0131t\u0131r\n # least_conn: En az ba\u011flant\u0131ya sahip sunucuya g\u00f6nderir\n # ip_hash: \u0130stemcinin IP adresine g\u00f6re ayn\u0131 sunucuya g\u00f6nderir (oturum kal\u0131c\u0131l\u0131\u011f\u0131 i\u00e7in)\n # random: Rastgele sunucu se\u00e7er\n # hash $request_uri consistent; # URI'ye g\u00f6re dengeleme\n \n server backend1.example.com:8080;\n server backend2.example.com:8080;\n server backend3.example.com:8080 weight=3; # Bu sunucuya 3 kat daha fazla istek g\u00f6nderir\n # server backup.example.com:8080 backup; # Di\u011fer sunucular devre d\u0131\u015f\u0131 kal\u0131rsa kullan\u0131l\u0131r\n # server failover.example.com:8080 down; # Ge\u00e7ici olarak devre d\u0131\u015f\u0131 b\u0131rak\u0131r\n}\n\nserver {\n listen 80;\n server_name app.example.com;\n\n location \/ {\n proxy_pass http:\/\/backend_servers; # \u0130stekleri yukar\u0131daki \"upstream\" blo\u011funa y\u00f6nlendirir\n proxy_set_header Host $host;\n proxy_set_header X-Real-IP $remote_addr;\n proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n }\n}\n<\/code><\/pre>\nHTTP \u00d6nbellekleme (HTTP Caching)<\/h3>\n
S\u0131k eri\u015filen statik veya dinamik i\u00e7eri\u011fi \u00f6nbelle\u011fe alarak sunucu y\u00fck\u00fcn\u00fc azalt\u0131r ve yan\u0131t s\u00fcrelerini iyile\u015ftirir.<\/p>\n
\n\u00d6nbellek dizinini ve ayarlar\u0131n\u0131 tan\u0131mla<\/h2>\nproxy_cache_path \/var\/cache\/nginx levels=1:2 keys_zone=my_cache:10m inactive=60m max_size=1g;\n\u00d6nbellek anahtar\u0131n\u0131 tan\u0131mla (istekleri tekil olarak tan\u0131mlamak i\u00e7in)<\/h2>\nproxy_cache_key \"$scheme$request_method$host$request_uri\";\n\nserver {\n listen 80;\n server_name cache.example.com;\n\n location \/ {\n proxy_pass http:\/\/backend_server_origin; # Orijinal i\u00e7erik sunucusu\n proxy_cache my_cache; # Tan\u0131mlad\u0131\u011f\u0131m\u0131z \u00f6nbelle\u011fi kullan\n proxy_cache_valid 200 301 302 10m; # 200, 301, 302 durum kodlu yan\u0131tlar\u0131 10 dakika \u00f6nbelle\u011fe al\n proxy_cache_valid 404 1m; # 404 durum kodlu yan\u0131tlar\u0131 1 dakika \u00f6nbelle\u011fe al\n add_header X-Proxy-Cache $upstream_cache_status; # \u00d6nbellek durumunu HTTP ba\u015fl\u0131\u011f\u0131na ekle\n }\n}\n<\/code><\/pre>\n
proxy_cache_path<\/code> dizininin Nginx kullan\u0131c\u0131s\u0131 taraf\u0131ndan yaz\u0131labilir oldu\u011fundan emin olun.<\/p>\nSSL\/TLS \u015eifrelemesi (HTTPS)<\/h3>\n
Web sitenizi HTTPS ile g\u00fcvence alt\u0131na almak g\u00fcn\u00fcm\u00fczde bir standartt\u0131r. Let’s Encrypt ve Certbot ile bu s\u00fcre\u00e7 olduk\u00e7a kolayd\u0131r.<\/p>\n
\nserver {\n listen 80;\n listen [::]:80;\n server_name example.com www.example.com;\n\n # HTTP isteklerini HTTPS'e y\u00f6nlendir\n return 301 https:\/\/$host$request_uri;\n}\n\nserver {\n listen 443 ssl http2; # HTTPS ve HTTP\/2 i\u00e7in dinle\n listen [::]:443 ssl http2;\n server_name example.com www.example.com;\n\n # Certbot taraf\u0131ndan olu\u015fturulan SSL sertifikalar\u0131\n ssl_certificate \/etc\/letsencrypt\/live\/example.com\/fullchain.pem;\n ssl_certificate_key \/etc\/letsencrypt\/live\/example.com\/privkey.pem;\n\n ssl_protocols TLSv1.2 TLSv1.3; # Yaln\u0131zca g\u00fcvenli protokolleri kullan\n ssl_ciphers 'TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256'; # G\u00fcvenli \u015fifre paketleri\n ssl_prefer_server_ciphers on;\n ssl_session_cache shared:SSL:10m;\n ssl_session_timeout 10m;\n ssl_stapling on;\n ssl_stapling_verify on;\n resolver 8.8.8.8 8.8.4.4 valid=300s; # DNS \u00e7\u00f6z\u00fcmleyici\n resolver_timeout 5s;\n\n root \/var\/www\/example.com;\n index index.html;\n\n location \/ {\n try_files $uri $uri\/ =404;\n }\n}\n<\/code><\/pre>\nGZIP S\u0131k\u0131\u015ft\u0131rma<\/h3>\n
Web i\u00e7eri\u011fini s\u0131k\u0131\u015ft\u0131rarak bant geni\u015fli\u011fi kullan\u0131m\u0131n\u0131 azalt\u0131r ve y\u00fckleme s\u00fcrelerini h\u0131zland\u0131r\u0131r.<\/p>\n
\ngzip on; # GZIP s\u0131k\u0131\u015ft\u0131rmay\u0131 etkinle\u015ftir\ngzip_vary on; # Vary ba\u015fl\u0131\u011f\u0131n\u0131 ekleyerek proxy sunucular\u0131n\u0131n s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f ve s\u0131k\u0131\u015ft\u0131r\u0131lmam\u0131\u015f s\u00fcr\u00fcmleri \u00f6nbelle\u011fe almas\u0131n\u0131 sa\u011flar\ngzip_proxied any; # Proxy arkas\u0131ndaki istekler i\u00e7in de s\u0131k\u0131\u015ft\u0131rmay\u0131 etkinle\u015ftir\ngzip_comp_level 6; # S\u0131k\u0131\u015ft\u0131rma seviyesi (1-9, 6 iyi bir dengedir)\ngzip_types text\/plain text\/css application\/json application\/javascript text\/xml application\/xml application\/xml+rss text\/javascript image\/svg+xml; # S\u0131k\u0131\u015ft\u0131r\u0131lacak MIME tipleri\n<\/code><\/pre>\nG\u00fcvenlik \u0130pu\u00e7lar\u0131<\/h3>\n
* server_tokens off;<\/code>: Nginx s\u00fcr\u00fcm numaras\u0131n\u0131 HTTP yan\u0131t ba\u015fl\u0131klar\u0131ndan kald\u0131rarak bilgi s\u0131z\u0131nt\u0131s\u0131n\u0131 \u00f6nler.
\n* Rate Limiting:<\/strong> Belirli bir IP adresinden gelen istek say\u0131s\u0131n\u0131 s\u0131n\u0131rlayarak DDoS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 koruma sa\u011flar.<\/p>\nlimit_req_zone $binary_remote_addr zone=mylimit:10m rate=10r\/s; # 10MB bellek alan\u0131nda, saniyede 10 istek\n server {\n # ...\n location \/login\/ {\n limit_req zone=mylimit burst=5 nodelay; # Saniyede 10 iste\u011fe izin ver, 5 iste\u011fe kadar anl\u0131k fazlal\u0131\u011fa izin ver\n # ...\n }\n }<\/code><\/pre>\n* Basic Authentication:<\/strong> Belirli bir dizine eri\u015fimi kullan\u0131c\u0131 ad\u0131\/\u015fifre ile koruma alt\u0131na al\u0131r.<\/p>\nlocation \/admin\/ {\n auth_basic \"Restricted Area\";\n auth_basic_user_file \/etc\/nginx\/.htpasswd; # htpasswd ile olu\u015fturulmu\u015f kullan\u0131c\u0131 dosyas\u0131\n }<\/code><\/pre>\nSonu\u00e7 ve S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h2>\n
Nginx, modern web altyap\u0131lar\u0131n\u0131n vazge\u00e7ilmez bir bile\u015fenidir. Y\u00fcksek performans, kaynak verimlili\u011fi ve esnek konfig\u00fcrasyon yetenekleri sayesinde, statik i\u00e7erik sunumundan karma\u015f\u0131k mikroservis mimarilerine kadar geni\u015f bir yelpazede kullan\u0131lmaktad\u0131r. Web sitelerinizin h\u0131z\u0131n\u0131 art\u0131rmak, g\u00fcvenli\u011fini sa\u011flamak ve \u00f6l\u00e7eklenebilirli\u011fini y\u00fckseltmek i\u00e7in Nginx’i etkin bir \u015fekilde kullanmak, dijital varl\u0131\u011f\u0131n\u0131z\u0131n ba\u015far\u0131s\u0131 i\u00e7in kritik \u00f6neme sahiptir. S\u00fcrekli geli\u015ftirilen mod\u00fclleri ve aktif toplulu\u011fu ile Nginx, gelecekte de web teknolojilerinin \u00f6n saflar\u0131nda yer almaya devam edecektir.<\/p>\n
S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h3>\nNginx ve Apache aras\u0131ndaki temel fark nedir?<\/h3>\n
Temel fark mimarilerindedir. Apache genellikle s\u00fcre\u00e7 tabanl\u0131 veya i\u015f par\u00e7ac\u0131\u011f\u0131 tabanl\u0131d\u0131r (her ba\u011flant\u0131 i\u00e7in yeni bir s\u00fcre\u00e7\/i\u015f par\u00e7ac\u0131\u011f\u0131), bu da daha fazla kaynak t\u00fcketimine yol a\u00e7abilir. Nginx ise olay tabanl\u0131 (event-driven) ve asenkron bir mimariye sahiptir, bu sayede \u00e7ok daha az kaynakla binlerce e\u015fzamanl\u0131 ba\u011flant\u0131y\u0131 i\u015fleyebilir. Nginx statik i\u00e7erik ve ters proxy i\u00e7in genellikle daha h\u0131zl\u0131d\u0131r, Apache ise daha zengin mod\u00fcl ekosistemine ve esnekli\u011fe sahiptir (\u00f6zellikle eski PHP uygulamalar\u0131 i\u00e7in).<\/p>\n
Nginx neden bu kadar h\u0131zl\u0131?<\/h3>\n
Nginx’in h\u0131z\u0131, olay tabanl\u0131 ve non-blocking (engellemeyen) I\/O mimarisinden gelir. Her ba\u011flant\u0131 i\u00e7in ayr\u0131 bir s\u00fcre\u00e7 veya i\u015f par\u00e7ac\u0131\u011f\u0131 olu\u015fturmak yerine, tek bir worker s\u00fcreci binlerce ba\u011flant\u0131y\u0131 verimli bir \u015fekilde y\u00f6netebilir. Bu, daha az bellek t\u00fcketimi ve daha az CPU d\u00f6ng\u00fcs\u00fc anlam\u0131na gelir, bu da daha y\u00fcksek i\u015flem hacmi ve daha d\u00fc\u015f\u00fck gecikme s\u00fcresi sa\u011flar.<\/p>\n
Nginx sadece statik dosyalar i\u00e7in mi kullan\u0131l\u0131r?<\/h3>\n
Hay\u0131r, kesinlikle de\u011fil. Nginx statik dosyalar\u0131 \u00e7ok iyi sunsa da, en yayg\u0131n kullan\u0131mlar\u0131ndan biri ters proxy olarak dinamik web uygulamalar\u0131n\u0131n (Node.js, Python, PHP, Java) \u00f6n\u00fcnde \u00e7al\u0131\u015fmakt\u0131r. Ayr\u0131ca y\u00fck dengeleme, HTTP \u00f6nbellekleme, API gateway ve g\u00fcvenlik duvar\u0131 (WAF entegrasyonu) gibi bir\u00e7ok farkl\u0131 geli\u015fmi\u015f rol \u00fcstlenebilir.<\/p>\n
Nginx’te bir hata ay\u0131klama nas\u0131l yap\u0131l\u0131r?<\/h3>\n
En s\u0131k kullan\u0131lan y\u00f6ntemler \u015funlard\u0131r:<\/p>\n
\nsudo nginx -t<\/code>: Konfig\u00fcrasyon dosyalar\u0131n\u0131zda s\u00f6zdizimi hatalar\u0131n\u0131 kontrol eder.<\/li>\nsudo systemctl reload nginx<\/code> veya sudo systemctl restart nginx<\/code>: De\u011fi\u015fiklikleri uygulad\u0131ktan sonra Nginx’i yeniden y\u00fckler veya yeniden ba\u015flat\u0131r.<\/li>\n\/var\/log\/nginx\/error.log<\/code>: Hata log dosyas\u0131n\u0131 kontrol ederek sorunlar\u0131n nedenini bulabilirsiniz. Konfig\u00fcrasyon dosyas\u0131ndaki error_log<\/code> y\u00f6nergesinden log seviyesini (debug, info, notice, warn, error, crit) ayarlayabilirsiniz.<\/li>\n<\/ul>\nNginx’i konteynerize etmek mant\u0131kl\u0131 m\u0131?<\/h3>\n
Evet, Nginx’i Docker gibi konteyner teknolojileriyle kullanmak olduk\u00e7a yayg\u0131n ve mant\u0131kl\u0131d\u0131r. Konteynerler, Nginx’in uygulaman\u0131zla birlikte kolayca da\u011f\u0131t\u0131lmas\u0131n\u0131, izole edilmesini ve \u00f6l\u00e7eklenmesini sa\u011flar. Bu, mikroservis mimarileri ve bulut tabanl\u0131 da\u011f\u0131t\u0131mlar i\u00e7in ideal bir yakla\u015f\u0131md\u0131r.<\/p>\n
Nginx Plus nedir?<\/h3>\n
Nginx Plus, Nginx’in ticari (\u00fccretli) bir s\u00fcr\u00fcm\u00fcd\u00fcr. A\u00e7\u0131k kaynakl\u0131 Nginx’in t\u00fcm \u00f6zelliklerine ek olarak, geli\u015fmi\u015f y\u00fck dengeleme algoritmalar\u0131, oturum kal\u0131c\u0131l\u0131\u011f\u0131, aktif sa\u011fl\u0131k kontrolleri, daha kapsaml\u0131 izleme ve y\u00f6netim API’leri, geli\u015fmi\u015f \u00f6nbellek kontrol\u00fc ve kurumsal d\u00fczeyde destek gibi \u00f6zellikler sunar. Y\u00fcksek \u00f6l\u00e7ekli ve kritik i\u015f y\u00fckleri i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/p>\n
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