nginx.conf

events {
    worker_connections 1024;  # Maximum number of simultaneous connections
}

# Define the HTTP block to configure the HTTP server
http {
    # Include MIME types
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    # Basic settings
    sendfile on;  # Enable sendfile for improved performance
    tcp_nopush on;  # Enable TCP_NOPUSH to send headers in one packet
    tcp_nodelay on;  # Enable TCP_NODELAY to send data immediately
    keepalive_timeout 65;  # Timeout for keep-alive connections
    types_hash_max_size 2048;  # Maximum size of types hash table

    # Define an upstream block to group backend servers
    # This upstream block is named 'frontend' and points to the frontend service
    upstream frontend {
        server kenyare-frontend:5173;  # Use the 'kenyare-frontend' service name and exposed port
    }

    # Define an upstream block to group backend servers
    # This upstream block is named 'backend' and points to the backend service
    upstream backend {
        server kenyare-backend:8000;  # Use the 'kenyare-backend' service name and exposed port
    }

    # Define a server block to handle incoming HTTP requests
    server {
        listen 80;  # Listen on port 80 for incoming HTTP requests
        
        # WebSocket support for Vite HMR
        location /ws {
            proxy_pass http://frontend;  # Forward WebSocket requests to the 'frontend' upstream
            proxy_http_version 1.1;  # Use HTTP/1.1 for WebSocket support
            proxy_set_header Upgrade $http_upgrade;  # Set the Upgrade header for WebSocket
            proxy_set_header Connection "upgrade";  # Set the Connection header for WebSocket
            proxy_set_header Host $host;  # Preserve the original Host header
        }

        # Define a location block to handle requests to the root URL
        location / {
            proxy_pass http://frontend;  # Forward requests to the 'frontend' upstream
            proxy_http_version 1.1;  # Use HTTP/1.1 for persistent connections
            proxy_set_header Host $host;  # Preserve the original Host header
            proxy_set_header X-Real-IP $remote_addr;  # Preserve the original client IP
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  # Preserve the original X-Forwarded-For header
            proxy_set_header X-Forwarded-Proto $scheme;  # Preserve the original scheme (http or https)
            proxy_read_timeout 600s;  # Timeout for reading a response from the proxied server
            proxy_connect_timeout 600s;  # Timeout for establishing a connection to the proxied server
        }

        # Define a location block to handle requests to the /api/ URL
        location /api/ {
            proxy_pass http://backend/;  # Forward requests to the 'backend' upstream
            proxy_http_version 1.1;  # Use HTTP/1.1 for persistent connections
            proxy_set_header Host $host;  # Preserve the original Host header
            proxy_set_header X-Real-IP $remote_addr;  # Preserve the original client IP
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  # Preserve the original X-Forwarded-For header
            proxy_set_header X-Forwarded-Proto $scheme;  # Preserve the original scheme (http or https)
        }
    }
}