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https://github.com/google/ngx_brotli
NGINX module for Brotli compression
https://github.com/google/ngx_brotli
Last synced: about 2 months ago
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NGINX module for Brotli compression
- Host: GitHub
- URL: https://github.com/google/ngx_brotli
- Owner: google
- License: bsd-2-clause
- Created: 2015-10-09T22:16:03.000Z (almost 9 years ago)
- Default Branch: master
- Last Pushed: 2024-05-28T06:27:30.000Z (4 months ago)
- Last Synced: 2024-06-22T04:54:06.225Z (3 months ago)
- Language: C
- Homepage:
- Size: 82 KB
- Stars: 2,046
- Watchers: 74
- Forks: 211
- Open Issues: 38
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
README
# ngx_brotli
Brotli is a generic-purpose lossless compression algorithm that compresses data
using a combination of a modern variant of the LZ77 algorithm, Huffman coding
and 2nd order context modeling, with a compression ratio comparable to the best
currently available general-purpose compression methods. It is similar in speed
with deflate but offers more dense compression.
ngx_brotli is a set of two nginx modules:
- ngx_brotli filter module - used to compress responses on-the-fly,
- ngx_brotli static module - used to serve pre-compressed files.
## Table of Contents
- [Status](#status)
- [Installation](#installation)
- [Configuration directives](#configuration-directives)
- [`brotli_static`](#brotli_static)
- [`brotli`](#brotli)
- [`brotli_types`](#brotli_types)
- [`brotli_buffers`](#brotli_buffers)
- [`brotli_comp_level`](#brotli_comp_level)
- [`brotli_window`](#brotli_window)
- [`brotli_min_length`](#brotli_min_length)
- [Variables](#variables)
- [`$brotli_ratio`](#brotli_ratio)
- [Sample configuration](#sample-configuration)
- [Contributing](#contributing)
- [License](#license)
## Status
Both Brotli library and nginx module are under active development.
## Installation
### Statically compiled
Checkout the latest `ngx_brotli` and build the dependencies:
```
git clone --recurse-submodules -j8 https://github.com/google/ngx_brotli
cd ngx_brotli/deps/brotli
mkdir out && cd out
cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DCMAKE_C_FLAGS="-Ofast -m64 -march=native -mtune=native -flto -funroll-loops -ffunction-sections -fdata-sections -Wl,--gc-sections" -DCMAKE_CXX_FLAGS="-Ofast -m64 -march=native -mtune=native -flto -funroll-loops -ffunction-sections -fdata-sections -Wl,--gc-sections" -DCMAKE_INSTALL_PREFIX=./installed ..
cmake --build . --config Release --target brotlienc
cd ../../../..
```
$ cd nginx-1.x.x
$ export CFLAGS="-m64 -march=native -mtune=native -Ofast -flto -funroll-loops -ffunction-sections -fdata-sections -Wl,--gc-sections"
$ export LDFLAGS="-m64 -Wl,-s -Wl,-Bsymbolic -Wl,--gc-sections"
$ ./configure --add-module=/path/to/ngx_brotli
$ make && make install
This will compile the module directly into Nginx.
### Dynamically loaded
$ cd nginx-1.x.x
$ ./configure --with-compat --add-dynamic-module=/path/to/ngx_brotli
$ make modules
You will need to use **exactly** the same `./configure` arguments as your Nginx configuration and append `--with-compat --add-dynamic-module=/path/to/ngx_brotli` to the end, otherwise you will get a "module is not binary compatible" error on startup. You can run `nginx -V` to get the configuration arguments for your Nginx installation.
`make modules` will result in `ngx_http_brotli_filter_module.so` and `ngx_http_brotli_static_module.so` in the `objs` directory. Copy these to `/usr/lib/nginx/modules/` then add the `load_module` directives to `nginx.conf` (above the http block):
```nginx
load_module modules/ngx_http_brotli_filter_module.so;
load_module modules/ngx_http_brotli_static_module.so;
```
## Configuration directives
### `brotli_static`
- **syntax**: `brotli_static on|off|always`
- **default**: `off`
- **context**: `http`, `server`, `location`
Enables or disables checking of the existence of pre-compressed files with`.br`
extension. With the `always` value, pre-compressed file is used in all cases,
without checking if the client supports it.
### `brotli`
- **syntax**: `brotli on|off`
- **default**: `off`
- **context**: `http`, `server`, `location`, `if`
Enables or disables on-the-fly compression of responses.
### `brotli_types`
- **syntax**: `brotli_types [..]`
- **default**: `text/html`
- **context**: `http`, `server`, `location`
Enables on-the-fly compression of responses for the specified MIME types
in addition to `text/html`. The special value `*` matches any MIME type.
Responses with the `text/html` MIME type are always compressed.
### `brotli_buffers`
- **syntax**: `brotli_buffers `
- **default**: `32 4k|16 8k`
- **context**: `http`, `server`, `location`
**Deprecated**, ignored.
### `brotli_comp_level`
- **syntax**: `brotli_comp_level `
- **default**: `6`
- **context**: `http`, `server`, `location`
Sets on-the-fly compression Brotli quality (compression) `level`.
Acceptable values are in the range from `0` to `11`.
### `brotli_window`
- **syntax**: `brotli_window `
- **default**: `512k`
- **context**: `http`, `server`, `location`
Sets Brotli window `size`. Acceptable values are `1k`, `2k`, `4k`, `8k`, `16k`,
`32k`, `64k`, `128k`, `256k`, `512k`, `1m`, `2m`, `4m`, `8m` and `16m`.
### `brotli_min_length`
- **syntax**: `brotli_min_length `
- **default**: `20`
- **context**: `http`, `server`, `location`
Sets the minimum `length` of a response that will be compressed.
The length is determined only from the `Content-Length` response header field.
## Variables
### `$brotli_ratio`
Achieved compression ratio, computed as the ratio between the original
and compressed response sizes.
## Sample configuration
```
brotli on;
brotli_comp_level 6;
brotli_static on;
brotli_types application/atom+xml application/javascript application/json application/vnd.api+json application/rss+xml
application/vnd.ms-fontobject application/x-font-opentype application/x-font-truetype
application/x-font-ttf application/x-javascript application/xhtml+xml application/xml
font/eot font/opentype font/otf font/truetype image/svg+xml image/vnd.microsoft.icon
image/x-icon image/x-win-bitmap text/css text/javascript text/plain text/xml;
```
## Contributing
See [Contributing](CONTRIBUTING.md).
## License
Copyright (C) 2002-2015 Igor Sysoev
Copyright (C) 2011-2015 Nginx, Inc.
Copyright (C) 2015 Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.