You misread the explanation. Data from another process is in the cache, but your process can't access it (due to virtual memory protection). But you can still extract side-band information by measuring the cache latency.

Does this support both grunt and gulp? Because for many people thats like required to get it working in production stacks ...

What do you mean by support? You could import it into a Gulp/Grunt file and use it there if you wanted. :)

This is false. You can get helicopters much cheaper.

link?