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Operating Systems and Servers

Nginx 1.6.1

Nginx 1.6.1

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   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.

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Document Standards

Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

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   The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.


Vary Header Accept-Encoding

Vary Header Accept-Encoding

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   The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.

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No Cache Content

No Cache Content

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   Forces caches to submit the request to the origin server for validation before releasing a cached copy.


Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

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   Indicates that once a resource has become stale (e.g. max-age has expired), a cache must not use the response to satisfy subsequent requests for this resource without successful validation on the origin server.

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Document Encoding

Gzip Content-Encoding

Gzip Content-Encoding

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   The Content-Encoding entity header is used to compress the media-type. When present, its value indicates which encodings were applied to the entity-body. It lets the client know how to decode in order to obtain the media-type referenced by the Content-Type header.


Chunked transfer encoding

Chunked transfer encoding

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   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"




Operating Systems and Servers

Nginx 1.6.1

Nginx 1.6.1

2021-08-26 / 2021-08-26

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Document Standards

Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

2021-08-26 / 2021-08-26

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Vary Header Accept-Encoding

Vary Header Accept-Encoding

2021-08-26 / 2021-08-26

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No Cache Content

No Cache Content

2021-08-26 / 2021-08-26

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Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

2021-08-26 / 2021-08-26

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Document Encoding

Gzip Content-Encoding

Gzip Content-Encoding

2021-08-26 / 2021-08-26

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Chunked transfer encoding

Chunked transfer encoding

2021-08-26 / 2021-08-26

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Profile Details

Last technolgie detected on 2021-08-26 We know of 7 technologies on friend.im and 7 technologies detected on friend.im since 2021-08-26.




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