instance method change_counter

# File activesupport/lib/active_support/cache/redis_cache_store.rb, line 449
        def change_counter(key, amount, options)
          redis.node_for(key).with do |c|
            expires_in = options[:expires_in]

            if expires_in
              if supports_expire_nx?
                count, _ = c.pipelined do |pipeline|
                  pipeline.call("incrby", key, amount)
                  pipeline.call("expire", key, expires_in.to_i, "NX")
                end
              else
                count, ttl = c.pipelined do |pipeline|
                  pipeline.call("incrby", key, amount)
                  pipeline.call("ttl", key)
                end
                c.call("expire", key, expires_in.to_i) if ttl < 0
              end
            else
              count = c.call("incrby", key, amount)
            end

            count
          end
        end