Class: ECB::Exchange::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/ecb/exchange/cache.rb

Constant Summary collapse

KEY_PREFIX = 
"ecb_exchange_rates_for_date".freeze

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.backend ⇒ Object

Returns the value of attribute backend.



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# File 'lib/ecb/exchange/cache.rb', line 9

def backend
  @backend
end

Class Method Details

.read(key) ⇒ Object 



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# File 'lib/ecb/exchange/cache.rb', line 16

def self.read(key)
  store.read(cache_key(key))
end

.store ⇒ Object

use backend if set (must respond to read, write), otherwise Rails.cache will be used (if available) or we fall back to use an in-memory cache



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# File 'lib/ecb/exchange/cache.rb', line 22

def self.store
  if backend
    backend
  elsif defined?(Rails) && Rails.cache
    Rails.cache
  else
    MemoryCache.cache
  end
end

.write(key, value) ⇒ Object 



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# File 'lib/ecb/exchange/cache.rb', line 12

def self.write(key, value)
  store.write(cache_key(key), value)
end