travels of course no brainers don't use non scalable or low performance by non-scalable I mean try to not reach the limit where you need to pay for extra licenses or where you are on all the technology that you cannot horizontally scale I mean you can always add more CPU power but this is something that needs to be avoided and also try to use the try enough to use no documented API I know we have cases where there's an API working for 10 years it works good it's just that developers that did that long time goal of the company and you