Nginx Basic Architecture Detailed

Nginx ("Engine X") is a high-performance HTTP and reverse proxy server as well as a IMAP/POP3/SMTP server. Nginx was developed by Igor Sysoev for the second rambler.ru site of Russian traffic, and the first public version 0.1.0 was released on October 4, 2004. It publishes the source code in the form of a BSD license, which is known for its stability, rich feature set, sample configuration files, and consumption of low system resources.

Nginx's basic architecture:

a master that generates one or more worker

Event-driven: Kqueue, Epoll,/dev/poll

Message notification: Select, poll, RT Signals

Support Sendfile:sendfile64

File Aio

Support Mmap

Event-driven: Epoll:

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/80/65/wKioL1dAKSDzZqIYAAB18WfN92w864.png "title=" nginx-Event-driven epoll.png "alt=" Wkiol1daksdzzqiyaab18wfn92w864.png "/>

Event-driven Epoll-mmap:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/80/68/wKiom1dAKGjTkCi8AABcc_JLJ54238.png "title=" nginx-Event-driven epoll-mmap.png "alt=" Wkiom1dakgjtkci8aabcc_jlj54238.png "/>

nginx-Event-driven epoll-sendfile:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/80/68/wKiom1dAKKShqcC_AABcK6MXiMM158.png "title=" nginx-Event-driven epoll-sendfile.png "alt=" Wkiom1dakkshqcc_aabck6mximm158.png "/>

Basic Features:

A Web server with static resources that can cache open file descriptors;

Reverse proxy server, cache, load balancing;

Support FastCGI

Modular, non-DSO mechanism, filter gzip,ssi and image resizing

Support SSL

Extended Features:

Make a virtual host based on name and IP

Support KeepAlive

Supports smooth configuration updates or program version upgrades

Custom access logs that support the use of log caching for improved performance

Support URL Rewrite

Support for Path aliases

Support IP and user-based authentication;

Support rate limit, concurrency limit, etc.;

Nginx Basic Architecture Detailed