class Sprockets::Environment

def find_asset(path, options = {})

Cache `find_asset` calls 
def find_asset(path, options = {})
  # Ensure inmemory cached assets are still fresh on every lookup
  if (asset = @assets[path.to_s]) && asset.fresh?
    asset
  elsif asset = super
    @assets[path.to_s] = @assets[asset.pathname.to_s] = asset
    asset
  end
end