Does NGINX use threads?

Does NGINX use threads?

Nginx uses only asynchronous I/O, which makes blocking a non-issue. The only reason nginx uses multiple processes, is to make full use of multi-core, multi-CPU and hyper-threading systems. Even with SMP support, the kernel cannot schedule a single thread of execution over multiple CPUs.

Is NGINX non blocking?

1 Answer. Nginx uses non-blocking architecture – nginx architecture. Most of the industry standard reverse-proxy servers are non-blocking, including Apache HTTPD server.

How do I make Nginx more secure?

nginx Security: How To Harden Your Server Configuration

1. Disable Any Unwanted nginx Modules.
2. Disable nginx server_tokens.
3. Control Resources and Limits.
4. Disable Any Unwanted HTTP methods.
5. Install ModSecurity for Your nginx Web Server.
6. Set Up and Configure nginx Access and Error Logs.
7. Monitor nginx Access and Error Logs.

How does the thread pool work in Nginx?

This means that instead of creating another dedicated process or thread for each request (like servers with a traditional architecture), it handles multiple connections and requests in one worker process. To achieve this, NGINX works with sockets in a non‑blocking mode and uses efficient methods such as epoll and kqueue.

Why do we need to harden nginx web server?

The default Nginx configuration is not perfect and can have many vulnerabilities that’s why we harden them to make it secure. Most of the time, you need just GET, HEAD & POST HTTP request in your web application.

How does the asynchronous approach work in Nginx?

It’s well known that NGINX uses an asynchronous, event‑driven approach to handling connections. This means that instead of creating another dedicated process or thread for each request (like servers with a traditional architecture), it handles multiple connections and requests in one worker process.

Is it possible to avoid blocking in Nginx?

Blocking operations can ruin NGINX performance and must be avoided at all costs. Even in the current official NGINX code it’s not possible to avoid blocking operations in every case, and to solve this problem the new “thread pools” mechanism was implemented in NGINX version 1.7.11 and NGINX Plus Release 7.