The key differences between Nginx & Apache web servers
How they actually handle traffic is the biggest difference. Apache uses a process/thread-based model — basically, it spins up a new thread (or process) for every connection that comes in. That's worked great for decades, but it starts to strain when you've got a ton of simultaneous connections, since each one is eating its own chunk of memory. Nginx does things differently with an event-driven, asynchronous model — it handles thousands of connections using a small number of worker processes instead of one-per-connection. This is why Nginx tends to win the "handles high traffic better" reputation, especially for static content and situations with tons of concurrent users.
Configuration style feels pretty different too. Apache uses .htaccess files, which let you make config changes on a per-directory basis without restarting the server — genuinely handy for shared hosting environments or when you've got less technical people managing parts of a site. Nginx doesn't support .htaccess at all; everything lives in centralized config files, which some people find cleaner and more predictable, but it does mean any change requires a config reload.
Apache has been around longer and it shows in flexibility. It's got a massive library of modules and about as much community support/documentation as you could ask for, since it's been the default choice since the 90s. If you need something obscure and specific, chances are someone's already built an Apache module for it. Nginx's module system is more limited by comparison, though it's caught up a lot over the years and covers the vast majority of common use cases just fine.
In practice, a lot of setups actually just use both. It's pretty common to see Nginx sitting in front as a reverse proxy (handling incoming traffic, load balancing, serving static files fast) while Apache handles the backend application logic behind it. You get Nginx's speed on the frontend and Apache's flexibility where it's actually needed, instead of picking a side and losing the benefits of the other.
Bottom line for beginners: if you're running something simple and want speed with minimal fuss, Nginx is usually the easier modern default. If you need heavy customization, per-directory config control, or you're working with legacy stuff that assumes Apache/.htaccess exists, Apache's still a totally solid choice. Neither one is "wrong," they just fit different situations.
Curious what everyone here's running and why — always interesting to see how people land on one over the other in practice.
