# /etc/nginx/nginx.conf

user nginx;

worker_processes auto;

error_log /var/log/nginx/error.log warn;

pid /var/run/nginx.pid;

events {

worker_connections 2048;

use epoll;

multi_accept on;

}

http {

include /etc/nginx/mime.types;

default_type application/octet-stream;

# Logging

log_format main '$remote_addr - $remote_user [$time_local] '

'"$request" $status $body_bytes_sent '

'"$http_referer" "$http_user_agent"';

access_log /var/log/nginx/access.log main;

# Performance

sendfile on;

tcp_nopush on;

tcp_nodelay on;

keepalive_timeout 65;

types_hash_max_size 2048;

# Gzip compression

gzip on;

gzip_vary on;

gzip_min_length 1024;

gzip_types text/plain text/css application/json

application/javascript text/xml application/xml;

include /etc/nginx/conf.d/*.conf;

}

# /etc/nginx/conf.d/example.com.conf

server {

listen 80;

listen [::]:80;

server_name example.com www.example.com;

# Redirect to HTTPS

return 301 https://$server_name$request_uri;

}

server {

listen 443 ssl http2;

listen [::]:443 ssl http2;

server_name example.com www.example.com;

# SSL configuration

ssl_certificate /etc/ssl/certs/example.com.crt;

ssl_certificate_key /etc/ssl/private/example.com.key;

ssl_protocols TLSv1.2 TLSv1.3;

ssl_ciphers HIGH:!aNULL:!MD5;

ssl_prefer_server_ciphers on;

# Security headers

add_header Strict-Transport-Security "max-age=31536000" always;

add_header X-Frame-Options "SAMEORIGIN" always;

add_header X-Content-Type-Options "nosniff" always;

add_header X-XSS-Protection "1; mode=block" always;

root /var/www/example.com;

index index.html;

location / {

try_files $uri $uri/ =404;

}

# Static assets caching

location ~* \.(jpg|jpeg|png|gif|ico|css|js|woff2?)$ {

expires 30d;

add_header Cache-Control "public, immutable";

}

}

# Proxy cache configuration

proxy_cache_path /var/cache/nginx levels=1:2

keys_zone=api_cache:10m max_size=1g

inactive=60m use_temp_path=off;

server {

location /api {

# Enable caching

proxy_cache api_cache;

proxy_cache_key "$scheme$request_method$host$request_uri";

# Cache successful responses for 10 minutes

proxy_cache_valid 200 10m;

proxy_cache_valid 404 1m;

# Cache bypass conditions

proxy_cache_bypass $http_cache_control;

proxy_no_cache $http_cache_control;

# Add cache status header

add_header X-Cache-Status $upstream_cache_status;

# Use stale cache during updates

proxy_cache_use_stale error timeout updating

http_500 http_502 http_503;

proxy_cache_background_update on;

proxy_cache_lock on;

proxy_pass http://backend;

}

# Purge cache endpoint

location ~ /purge(/.*) {

allow 127.0.0.1;

deny all;

proxy_cache_purge api_cache "$scheme$request_method$host$1";

}

}