Why Is Nginx the World’s Most Popular Web Server? A Deep Dive
This article explains why Nginx has overtaken Apache to become the leading web server, covering its performance‑focused design, high stability, master‑worker architecture, core configuration, location directives, access control, reverse‑proxy features, and real‑world deployment examples from major Chinese internet companies.
Why Nginx Became the Leading Web Server
Before Nginx, Apache dominated the web‑server market, but after Nginx’s release it quickly rose to the top due to its performance‑oriented design, high efficiency, strong stability, and mature code base.
Major Chinese internet firms such as Baidu, JD.com, Tencent, NetEase and Taobao have adopted Nginx for their large‑scale sites.
Nginx provides web services, load balancing (reverse proxy) and web caching.
Nginx Basics
Nginx is an open‑source, high‑performance HTTP server, reverse proxy, mail proxy, and TCP/UDP proxy.
It uses a multi‑process model consisting of a master process and multiple worker processes.
Master Process Functions
Read and validate configuration files.
Open, bind and close socket connections.
Manage worker processes according to the configuration.
Accept commands such as restart, upgrade, and shutdown.
Perform graceful upgrades without interrupting service.
Open log files and obtain file descriptors.
Rollback on upgrade failure.
Compile and handle Perl scripts.
Worker Process Functions
Accept and process client requests.
Dispatch requests to appropriate modules.
Perform I/O operations to generate responses.
Communicate with backend servers and receive processing results.
Cache data, access cache indexes, and retrieve cached content.
Send response data back to clients.
Receive directives from the master process (restart, upgrade, exit).
Core Configuration Details
Example of creating a mobile‑web site and using the location directive is shown.
Four‑Layer Access Control
Access control is implemented via the ngx_http_access_module, allowing IP‑based request restrictions.
File Existence Check
Configuration snippets for testing whether a file exists are provided.
Advanced Configuration and Reverse Proxy
Reverse proxy forwards external requests to internal web servers and returns the response to the client.
Production Deployment Structure
Typical production architecture diagrams illustrate how Nginx fits into a full stack.
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