Nginx vs Apache: Which Web Server Should You Use?

Nginx and Apache have powered the majority of the web for over a decade. They can both serve static files, proxy to application servers and terminate TLS — but they're built on fundamentally different architectures, and that difference shapes where each one shines.

The core difference: architecture

Apache traditionally uses a process/thread-per-connection model (via its MPMs). Each connection gets a worker; this is simple and flexible but uses more memory as concurrency grows.

Nginx uses an event-driven, asynchronous model. A small number of worker processes handle thousands of connections each using an event loop. This makes Nginx extremely efficient at serving static content and handling many idle or slow connections (the "C10k" problem).

Performance

• Static files & high concurrency: Nginx usually wins, with lower memory per connection.
• Dynamic content: both delegate to an app server (PHP-FPM, etc.), so the gap narrows.
• Slow clients / many keep-alive connections: Nginx's event model handles them gracefully.

Configuration style

Apache uses directives that can live in the main config or in per-directory .htaccess files — convenient on shared hosting where you can't touch the main config. Nginx has no per-directory config; everything lives in central files, which is faster (no per-request file lookups) but requires access to the server config.

A minimal Nginx site

server {
    listen 80;
    server_name example.com;
    root /var/www/example/public;
    index index.html index.php;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/run/php/php8.2-fpm.sock;
    }
}

The equivalent Apache VirtualHost

<VirtualHost *:80>
    ServerName example.com
    DocumentRoot /var/www/example/public

    <Directory /var/www/example/public>
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>

The most common real-world setup

Many teams use both: Nginx in front as a reverse proxy and static-file server, passing dynamic requests to Apache or an app server behind it. Nginx handles TLS, caching and slow clients efficiently; the backend focuses on generating responses.

server {
    listen 443 ssl;
    server_name example.com;

    location / {
        proxy_pass http://127.0.0.1:8080;   # Apache or app server
        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;
    }
}

Which should you choose?

• Choose Nginx for high-traffic static sites, as a reverse proxy/load balancer, or when memory efficiency matters.
• Choose Apache when you need .htaccess flexibility (shared hosting), rely on its huge module ecosystem, or run legacy apps that expect it.
• Use both when you want Nginx's front-end efficiency with Apache's per-directory flexibility.