[GraphHopper] Memory requirements

[Laurent Bendel]

Hi all,
just a general question. What kind of RAM does a server needs to serve routing request on a fairly large map (say Europe) ? and what about the complete planet file ?
I’m more interested in the amount of RAM, disk space is rather cheap, but does it benefit from a fast drive such as an SSD ?
I guess it depends whether you use CH or not, It’d be interested to know the difference. And if the memory mapping is used instead of RAM, what are the minimum ? I read an Android device is capable of calculating routes, but probably not for a very big planet file.

Last, does the graph building process require more or less RAM than serving requests ?

Thanks,
Laurent