Delayed Deltas for Thinking Sphinx (with Resque)
================================================
[![Build Status](https://secure.travis-ci.org/agibralter/ts-resque-delta.png?branch=master)](http://travis-ci.org/agibralter/ts-resque-delta)

**This code is HEAVILY borrowed from
[ts-delayed-delta](https://github.com/freelancing-god/ts-delayed-delta).**

Installation
------------
This gem depends on the following gems: _thinking-sphinx_, _resque_, and
_resque-lock-timeout_.

    gem install ts-resque-delta

Add _ts-resque-delta_ to your **Gemfile** file, with the rest of your gem
dependencies:

    gem 'ts-resque-delta', '~> 2.1'

If you're using Rails 3, the rake tasks will automatically be loaded by Rails.
If you're using Rails 2, add the following line to your **Rakefile**:

    require 'thinking_sphinx/deltas/resque_delta/tasks'

Add the delta property to each `define_index` block:

    define_index do
      # ...
      set_property :delta => ThinkingSphinx::Deltas::ResqueDelta
    end

If you've never used delta indexes before, you'll want to add the boolean
column named `:delta` to each model's table (note, you must set the `:default`
value to `true`):

    def self.up
      add_column :foos, :delta, :boolean, :default => true, :null => false
    end

Also, I highly recommend adding a MySQL index to the table of any model using
delta indexes. The Sphinx indexer uses `WHERE table.delta = 1` whenever the
delta indexer runs and `... = 0` whenever the normal indexer runs. Having the
MySQL index on the delta column will generally be a win:

    def self.up
      # ...
      add_index :foos, :delta
    end

Usage
-----
Once you've got it all set up, all you need to do is make sure that the Resque
worker is running. You can do this by specifying the `:ts_delta` queue when
running Resque:

    QUEUE=ts_delta,other_queues rake resque:work

Contributors (for ts-resque-delta)
-----------------------------------
* [Aaron Gibralter](https://github.com/agibralter)
* [Ryan Schlesinger](https://github.com/ryansch) (Locking/`smart_index`)
* [Pat Allan](https://github.com/freelancing-god) (FlyingSphinx support)
* [James Richard](https://github.com/ketzusaka)

Original Contributors (for ts-delayed-delta)
--------------------------------------------
* [Pat Allan](https://github.com/freelancing-god)
* [Ryan Schlesinger](https://github.com/ryansch) (Allowing installs as a plugin)
* [Maximilian Schulz](https://max.jungeelite.de) (Ensuring compatibility with Bundler)
* [Edgars Beigarts](https://github.com/ebeigarts) (Adding intelligent description for tasks)
* [Alexander Simonov](https://simonov.me/) (Explicit table definition)

Copyright
---------
Copyright (c) 2011 Aaron Gibralter, and released under an MIT Licence.