server {
    listen 80;
    # Listen for incoming connections on port 80
    
    server_name _;
    # Accept requests from any domain name
    
    root /usr/share/nginx/html;
    # Set the directory where our app files are located
    
    index index.html;
    # Serve index.html as the default page

    # Enable gzip
    gzip on;
    # Turn on compression for files
    
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    # Specify which file types to compress

    location / {
        try_files $uri $uri/ /index.html;
        # Try to find the requested file, if not found serve index.html
    }

    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        # Match files with these extensions
        
        expires 1y;
        # Set files to expire in 1 year
        
        add_header Cache-Control "public, immutable";
        # Tell browsers these files never change, cache them permanently
    }
}

# It compresses files to save bandwidth and caches assets.

# The try_files rule ensures Flutters client-side routing works correctly.

# Finds the right files and sends them to the browser

# Compresses files to make them download faster

# Tells browsers to cache files so they load instantly on repeat visits