https://github.com/vimeo/libvmod-boltsort

A fast Varnish module for sorting query string parameters.
https://github.com/vimeo/libvmod-boltsort

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A fast Varnish module for sorting query string parameters.

• Host: GitHub
• URL: https://github.com/vimeo/libvmod-boltsort
• Owner: vimeo
• License: other
• Created: 2012-09-17T17:22:30.000Z (about 12 years ago)
• Default Branch: 3.0
• Last Pushed: 2015-09-10T01:19:56.000Z (about 9 years ago)
• Last Synced: 2024-05-20T04:11:00.633Z (4 months ago)
• Language: C
• Homepage:
• Size: 195 KB
• Stars: 58
• Watchers: 30
• Forks: 16
• Open Issues: 1
• Metadata Files:
  • Readme: README.rst
  • License: COPYING

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README

        
=============

vmod_boltsort

=============

-----------------------

Varnish boltsort Module

-----------------------

:Author: Naren Venkataraman

:Date: 2012-09-01

:Version: 1.0

:Manual section: 3

SYNOPSIS

========

At Vimeo we use Varnish Cache to cache our player traffic. It has

worked out great for us.

Varnish at this point has no built in module to sort querystrings.  

Say I have two of these:

* /video/48088296?title=0&byline=0&portrait=0&color=51a516

* /video/48088296?byline=0&color=51a516&portrait=0&title=0

Boltsort sorts the querystring and ensures that Varnish treats the

above one and the same.

DESCRIPTION

===========

The boltsort Varnish vmod sorts querystring.

* Insertion sort on tokenized querystring params makes it twice as fast as current qsort implementations

* Custom param compare instead of storing param lengths for each querystring param means lesser stack usage

FUNCTIONS

=========

sort

-----

Prototype

        ::

                sort(STRING S)

Return value

	STRING

Description

	Returns url with querystring sorted

Example

        ::

                set req.url = boltsort.sort(req.url);

INSTALLATION

============

Same as libvmod-example installation instructions

Usage::

 yum install python-docutils or apt-get install python-docutils

 ./autogen.sh

 ./configure VARNISHSRC=DIR [VMODDIR=DIR]

`VARNISHSRC` is the directory of the Varnish source tree for which to

compile your vmod. Both the `VARNISHSRC` and `VARNISHSRC/include`

will be added to the include search paths for your module.

Optionally you can also set the vmod install directory by adding

`VMODDIR=DIR` (defaults to the pkg-config discovered directory from your

Varnish installation).

Make targets:

* make - builds the vmod

* make install - installs your vmod in `VMODDIR`

* make check - runs the unit tests in ``src/tests/*.vtc``

In your VCL you could then use this vmod along the following lines::

        

        import boltsort;

        sub vcl_hash {

                # sort the querysting and use the sorted one for hashing

                set req.url = boltsort.sort(req.url);

        }

COPYRIGHT

=========

This document is licensed under the same license as the

libvmod-boltsort project. See LICENSE for details.

* Copyright (c) 2012 Vimeo