Class: Moneta::Adapters::Redis

Inherits:
Base
  • Object
show all
Defined in:
lib/moneta/adapters/redis.rb

Overview

Redis backend

Instance Method Summary collapse

Methods inherited from Base

#[], #[]=, #close, #decrement, #fetch

Methods included from Mixins::WithOptions

#expires, #prefix, #raw, #with

Constructor Details

#initialize(options = {}) ⇒ Redis

Constructor

Parameters:

  • options (Hash) (defaults to: {})

Options Hash (options):

  • :expires (String) —

    Default expiration time

  • Other (Object) —

    options passed to ‘Redis#new`



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# File 'lib/moneta/adapters/redis.rb', line 13

def initialize(options = {})
  @expires = options.delete(:expires)
  @redis = ::Redis.new(options)
end

Instance Method Details

#clear(options = {}) ⇒ Object 



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# File 'lib/moneta/adapters/redis.rb', line 60

def clear(options = {})
  @redis.flushdb
  self
end

#delete(key, options = {}) ⇒ Object 



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# File 'lib/moneta/adapters/redis.rb', line 46

def delete(key, options = {})
  if value = load(key, options)
    @redis.del(key)
    value
  end
end

#increment(key, amount = 1, options = {}) ⇒ Object 



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# File 'lib/moneta/adapters/redis.rb', line 53

def increment(key, amount = 1, options = {})
  value = @redis.incrby(key, amount)
  expires = (options[:expires] || @expires)
  @redis.expire(key, expires) if expires
  value
end

#key?(key, options = {}) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/moneta/adapters/redis.rb', line 18

def key?(key, options = {})
  if @redis.exists(key)
    if expires = options[:expires]
      @redis.expire(key, expires)
    end
    true
  else
    false
  end
end

#load(key, options = {}) ⇒ Object 



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# File 'lib/moneta/adapters/redis.rb', line 29

def load(key, options = {})
  value = @redis.get(key)
  if value && (expires = options[:expires])
    @redis.expire(key, expires)
  end
  value
end

#store(key, value, options = {}) ⇒ Object 



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# File 'lib/moneta/adapters/redis.rb', line 37

def store(key, value, options = {})
  if expires = (options[:expires] || @expires)
    @redis.setex(key, expires, value)
  else
    @redis.set(key, value)
  end
  value
end