sample-nginx.conf

worker_processes auto;

events {
    worker_connections 1024;
    multi_accept on;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    # Log configuration
    access_log  /var/log/nginx/access.log;
    error_log   /var/log/nginx/error.log warn;

    # Define log format with more details
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                     '$status $body_bytes_sent "$http_referer" '
                     '"$http_user_agent" "$http_x_forwarded_for" '
                     '$request_time $upstream_response_time';

    # Use detailed log format
    access_log  /var/log/nginx/access.log  main;

    # Optimized settings for reverse proxy
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    client_max_body_size 10m;
    server_tokens off;

    # Gzip compression for frontend assets
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/xml+rss image/svg+xml;
    
    # Proxy cache settings
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=api_cache:10m max_size=100m inactive=60m;
    proxy_cache_key "$scheme$request_method$host$request_uri";
    proxy_cache_valid 200 302 10m;
    proxy_cache_valid 404 1m;
    
    # Proxy headers settings
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;

    # Main server block
    server {
        listen 80;
        server_name localhost;
        
        # Root directory for frontend assets
        root /var/www;
        
        # Serve frontend static files
        location / {
            try_files $uri $uri/ /index.html;
            expires 1d;
            add_header Cache-Control "public, max-age=86400";
        }
        
        # API proxy configuration
        location /api/ {
            proxy_pass http://backend-api:8080/;
            proxy_cache api_cache;
            proxy_buffer_size 128k;
            proxy_buffers 4 256k;
            proxy_busy_buffers_size 256k;
            
            # Don't cache POST/PUT/DELETE requests
            proxy_cache_methods GET HEAD;
            
            # Add cache status header
            add_header X-Cache-Status $upstream_cache_status;
            
            # Enable detailed logging for API requests
            access_log /var/log/nginx/api-access.log main;
        }
        
        # Security headers
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "no-referrer-when-downgrade" always;
    }
}