class Memcached
class Rails < ::Memcached
def fetch(key, options = {})
if value = get(key)
value
elsif block_given?
value = yield
begin
add(key, value)
rescue Memcached::NotStored => e
value = get(key)
end
value
end
end
def clear
flush
end
def exist?(key)
!get(key).nil?
end
end
end