Redis-Search (Deprecated! 不在维护!)

High performance real-time prefix search, indexes store in Redis for Rails application. 中文介绍和使用说明

NOTE!

There have more better ways you can choice!

下面的两种方式将是更好的选择：

• Elasticsearch Prefix Query
• PostgreSQL Prefix Search

Master Status

Features

• Real-time search
• High performance
• Prefix match search
• Support match with alias
• Support ActiveRecord and Mongoid
• Sort results by one field
• Homophone search, pinyin search
• Search as pinyin first chars
• Conditions support

Requirements

• Redis 2.2+

Install

gem 'redis-search'

$ bundle install

Configure

• Create file in: config/initializers/redis-search.rb

require "redis"
require "redis-namespace"
require "redis-search"

# don't forget change namespace
redis = Redis.new(host: '127.0.0.1', port: '6379')
# We suggest you use a special db in Redis, when you need to clear all data, you can use `flushdb` command to cleanup.
redis.select(3)
# Give a special namespace as prefix for Redis key, when your have more than one project used redis-search, this config will make them work fine.
redis = Redis::Namespace.new("your_app_name:redis_search", redis: redis)
Redis::Search.configure do |config|
  config.redis = redis
  config.complete_max_length = 100
  config.pinyin_match = true
end

Usage

• Bind Redis::Search callback event, it will to rebuild search indices when data create or update.

class Post < ActiveRecord::Base
  include Redis::Search

  belongs_to :user
  belongs_to :category

  redis_search title_field: :title,
               score_field: :hits,
               condition_fields: [:user_id, :category_id],
               ext_fields: [:category_name]

  def category_name
    self.category.name
  end
end

class User < ActiveRecord::Base
  include Redis::Search

  serialize :alias_names, Array

  redis_search title_field: :name,
               alias_field: :alias_names,
               score_field: :followers_count,
               ext_fields: [:email, :tagline]
end

class SearchController < ApplicationController
  # GET /search_users?q=j
  def search_users
    Post.prefix_match(params[:q], conditions: { user_id: 12, category_id: 4 })
  end
end

Index data to Redis

Specify Model

Redis-Search index data to Redis from your model (pass name as CLASS environment variable).

$ rake redis_search:index:model CLASS='User'

Customize the batch size:

$ rake redis_search:index:model CLASS='User' BATCH=100

All Models

Redis-Search all index data to Redis from app/models (or use DIR environment variabl).

$ rake redis_search:index DIR=app/models

Customize the batch size:

$ rake redis_search:index DIR=app/models BATCH=100

Documentation

• See Rdoc.info redis-search
• Example App

Benchmark test

You can run the rake command (see Rakefile) to make test. There is my performance test result.

• https://gist.github.com/1150933

Demo

Projects used redis-search:

• redis-search-example - An example for show you how to use redis-search.
• IMAX.im
• Ruby China - Use for mention autocomplete.

License

• MIT