Module: ActiveRecord::QueryCache::ClassMethods

Included in:
Base
Defined in:
lib/active_record/query_cache.rb

Instance Method Summary collapse

Instance Method Details

#cache(&block) ⇒ Object

Enable the query cache within the block if Active Record is configured. If it’s not, it will execute the given block.



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# File 'lib/active_record/query_cache.rb', line 9

def cache(&block)
  if connected? || !configurations.empty?
    pool = connection_pool
    was_enabled = pool.query_cache_enabled
    begin
      pool.enable_query_cache(&block)
    ensure
      pool.clear_query_cache unless was_enabled
    end
  else
    yield
  end
end

#uncached(dirties: true, &block) ⇒ Object

Disable the query cache within the block if Active Record is configured. If it’s not, it will execute the given block.

Set dirties: false to prevent query caches on all connections from being cleared by write operations. (By default, write operations dirty all connections’ query caches in case they are replicas whose cache would now be outdated.)



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# File 'lib/active_record/query_cache.rb', line 28

def uncached(dirties: true, &block)
  if connected? || !configurations.empty?
    connection_pool.disable_query_cache(dirties: dirties, &block)
  else
    yield
  end
end