nishant-jain

if redis.call("EXISTS", KEYS[1]) == 1 then -- See if key for quantity exists
	if redis.call("INCRBY", KEYS[1], ARGV[1]) >= 0 then -- "Increment" the key by -quantity
		-- and check the new value
		redis.call("EXPIRE", KEYS[1], ARGV[2]) -- set an expiry time on this booking
		return true
	else
		return false
	end
else
	return false