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Nginx pronounced engine-x is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Igor Sysoev started development of Nginx in 2002, with the first public release in 2004. Nginx now hosts nearly.12.18% (22.2M)of active sites across all domains. Nginx is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption.

Nginx is one of a handful of servers written to address the C10K problem .Unlike traditional servers, Nginx doesn’t rely on threads to handle requests. Instead it uses a much more scalable event-driven (asynchronous) architecture. This architecture uses small, but more importantly, predictable amounts of memory under load.
Even if you don’t expect to handle thousands of simultaneous requests, you can still benefit from Nginx’s high-performance and small memory footprint. Nginx scales in all directions: from the smallest VPS all the way up to clusters of servers.

Nginx powers several high-visibility sites, such asNetflix, Hulu, Pinterest, CloudFlare, Airbnb,, GitHub, SoundCloud, Zynga, Eventbrite, Zappos, Media Temple, Heroku, RightScale, Engine Yard and MaxCDN .

We are currently using Nginx 0.6.29 with the upstream hash module which gives us the static hashing we need to proxy to Varnish. We are regularly serving about 8-9k requests/second and about 1.2Gbit/sec through a few Nginx instances and have plenty of room to grow!



Basic HTTP server features

1. Serving static and index files, auto-indexing; open file descriptor cache;
2. Accelerated reverse proxying with caching; load balancing and fault tolerance;
3. Accelerated support with caching of FastCGI, uwsgi, SCGI, and memcached servers; load balancing and fault tolerance;
4. Modular architecture. Filters include gzipping, byte ranges, chunked responses, XSLT, SSI, and image transformation filter. Multiple SSI inclusions within a single page can be processed in parallel if they are handled by proxied or FastCGI/uwsgi/SCGI servers;
5. SSL and TLS SNI support.

Other HTTP server features

1. Name-based and IP-based virtual servers.
2. Keep alive and pipelined connections support;
3.Flexible configuration;
4.Reconfiguration and upgrade of executable without interruption of the client servicing;
5.Access log formats buffered log writing, fast log rotation, and syslog logging;

Mail proxy server features

1.User redirection to IMAP or POP3 server using an external HTTP authentication server;
2.User authentication using an external HTTP authentication server and connection redirection to an internal SMTP server;
3.Authentication methods:
SSL support;
STARTTLS and STLS support.
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CEO, KV IT-Solutions Pvt. Ltd. | [email protected] | 9810028374|
Linux Professional and an Industrial Trainer | 20 + years Experience in IT Industry

” We are born free, No Gate and Windows can snatch our freedom “


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