Redis with Ruby

Transcript

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2. REDIS
   Redis is an open source, advanced key-
   value store. It is often referred to as a data
   structure server since keys can contain
   strings, hashes,lists, sets and sorted sets.
   gem ‘redis’
   

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3. USE
   Cache
   Session (cookies)
   gem ‘redis-rails’
   App::Application.config.session_store
   :redis_store,
   :servers => "redis://127.0.0.1:6379/1"
   

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4. Commands
   $redis =
   new Redis(:host => ‘127.0.0.7’, :port => 6379, :db => 0)
   $redis.set(‘my_key’, ‘awesome’)
   $redis.get(‘my_key’) => ‘awesome’
   $redis.del(‘my_key’)
   

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5. ENVIRONMENT
   Resque (+ Scheduler)
   Ohm
   EventMachine
   PubSub
   

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6. Resque (+Scheduler)
   Fast ²
   Queue
   YAML - Cron
   gem ‘resque’
   gem ‘resque-scheduler’,
   git: 'git://github.com/bvandenbos/resque-scheduler'
   

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7. Ohm
   ORM
   Flexible
   Extensible
   gem ‘ohm’
   gem ‘ohm-contrib’
   

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8. Ohm (model)
   class User < Ohm::Model
   attribute :name
   attribute :nickname
   include Ohm::Validations
   extend ActiveModel::Naming
   include ActiveModel::AttributeMethods
   index :name
   collection :messages, Message
   end
   

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9. Ohm (model)
   class User < Ohm::Model
   def persisted?
   false
   end
   def to_hash
   super.merge({:name => self.name})
   end
   end
   

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10. Ohm (model)
    class Message < Ohm::Model
    attribute :content
    include Ohm::Validations
    extend ActiveModel::Naming
    include ActiveModel::AttributeMethods
    index :content
    reference :user, User
    end
    

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11. EventMachine
    Node.js for Ruby
    em-WebSocket
    em-redis
    gem ‘eventmachine’
    gem ‘em-redis’
    

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12. PubSub
    $redis =
    new Redis(:host => ‘127.0.0.7’, :port => 6379, :db => 0)
    $redis.publish(‘my_channel’, ‘content’)
    $redis.subscribe(‘my_channel’) do |on|
    on.message do |channel, msg|
    puts msg
    end
    end
    $redis.publish(‘my_channel.*’, ‘content’)
    

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13. PRODUCTION
    Debian / OSX
    Heroku
    Easy (foreman)
    

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14. @ damln
    www.dln.name
    

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