Class: RecordCache::Strategy::RequestCache

Inherits:
Base
  • Object
show all
Defined in:
lib/record_cache/strategy/request_cache.rb

Constant Summary collapse

@@request_store = 
{}

Constants inherited from Base

Base::ATTRIBUTES_KEY, Base::CLASS_KEY

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#cacheable?, #initialize

Constructor Details

This class inherits a constructor from RecordCache::Strategy::Base

Class Method Details

.clear ⇒ Object

call before each request: in application_controller.rb before_filter { |c| RecordCache::Strategy::RequestCache.clear }



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# File 'lib/record_cache/strategy/request_cache.rb', line 13

def self.clear
  @@request_store.clear
end

Instance Method Details

#fetch(query, &block) ⇒ Object

return the records from the request cache, execute block in case this is the first time this query is performed during this request



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# File 'lib/record_cache/strategy/request_cache.rb', line 29

def fetch(query, &block)
  klass_store = (@@request_store[@base.name] ||= {})
  key = query.cache_key
  # logging (only in debug mode!) and statistics
  log_cache_hit(key, klass_store.key?(key)) if RecordCache::Base.logger.debug?
  statistics.add(1, klass_store.key?(key) ? 1 : 0) if statistics.active?
  klass_store[key] ||= yield
end

#invalidate(value) ⇒ Object

Handle invalidation call



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# File 'lib/record_cache/strategy/request_cache.rb', line 23

def invalidate(value)
  @@request_store.delete(@base.name)
end

#record_change(record, action) ⇒ Object

Handle record change



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# File 'lib/record_cache/strategy/request_cache.rb', line 18

def record_change(record, action)
  @@request_store.delete(@base.name)
end