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2013-10-12 | [11,717]

nginx 1.43 Stable


nginxnginx [engine x] is a HTTP and reverse proxy server, as well as a mail proxy server written by Igor Sysoev. It has been running for more than five years on many heavily loaded Russian sites including Rambler ( According to Netcraft nginx served or proxied 4.70% busiest sites in April 2010. Here are some of success stories: FastMail.FM,
The sources are licensed under 2-clause BSD-like license.

Changes with nginx 1.4.3 08 Oct 2013
*) Bugfix: a segmentation fault might occur in a worker process if the
ngx_http_spdy_module was used with the “client_body_in_file_only”
*) Bugfix: a segmentation fault might occur on start or during
reconfiguration if the “try_files” directive was used with an empty
*) Bugfix: the $request_time variable did not work in nginx/Windows.
*) Bugfix: in the ngx_http_auth_basic_module when using “$apr1$”
password encryption method.
Thanks to Markus Linnala.
*) Bugfix: in the ngx_http_autoindex_module.
*) Bugfix: in the mail proxy server.

Basic HTTP features
* Serving static and index files, and autoindexing; open file descriptor cache;
* Accelerated reverse proxying with caching; simple load balancing and fault tolerance;
* Accelerated support with caching of remote FastCGI servers; simple load balancing and fault tolerance;
* Modular architecture. Filters include gzipping, byte ranges, chunked responses, XSLT, SSI, and image resizing filter. Multiple SSI inclusions within a single page can be processed in parallel if they are handled by FastCGI or proxied servers.
* SSL and TLS SNI support.

Other HTTP features
* Name-based and IP-based virtual servers;
* Keep-alive and pipelined connections support;
* Flexible configuration;
* Reconfiguration and online upgrade without interruption of the client processing;
* Access log formats, bufferred log writing, and quick log rotation;
* 3xx-5xx error codes redirection;
* The rewrite module;
* Access control based on client IP address and HTTP Basic authentication;
* The PUT, DELETE, MKCOL, COPY and MOVE methods;
* FLV streaming;
* Speed limitation;
* Limitation of simultaneous connections or requests from one address.
* Embedded perl.

Mail proxy server features
* User redirection to IMAP/POP3 backend using an external HTTP authentication server;
* User authentication using an external HTTP authentication server and connection redirection to internal SMTP backend;
* Authentication methods:
* SSL support;
* STARTTLS and STLS support.

Architecture and scalability
* One master process and several workers processes. The workers run as unprivileged user;
* The notification methods: kqueue (FreeBSD 4.1+), epoll (Linux 2.6+), rt signals (Linux 2.2.19+), /dev/poll (Solaris 7 11/99+), event ports (Solaris 10), select, and poll;
* The support of the various kqueue features including EV_CLEAR, EV_DISABLE (to disable event temporalily), NOTE_LOWAT, EV_EOF, number of available data, error codes;
* sendfile (FreeBSD 3.1+, Linux 2.2+, Mac OS X 10.5), sendfile64 (Linux 2.4.21+), and sendfilev (Solaris 8 7/01+) support;
* File AIO (FreeBSD 4.3+, Linux 2.6.22+);
* Accept-filters (FreeBSD 4.1+) and TCP_DEFER_ACCEPT (Linux 2.4+) support;
* 10,000 inactive HTTP keep-alive connections take about 2.5M memory;
* Data copy operations are kept to a minimum.

Tested OS and platforms
* FreeBSD 3 — 8 / i386; FreeBSD 5 — 8 / amd64;
* Linux 2.2 — 2.6 / i386; Linux 2.6 / amd64;
* Solaris 9 / i386, sun4u; Solaris 10 / i386, amd64, sun4v;
* MacOS X / ppc, i386;
* Windows XP, Windows Server 2003.


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