Thank you @RubenVerborgh !
I am pretty new with all this stuff, so thank you for the time you take to explain to me 
If LDP is making the job and I can do partial request on documents server side, and this is the one standard that all SOLID servers will implement, and it is more efficient, then I will go for it !
Can you tel me where I can get good documentation / tutorials / examples about LDP ?
Thank you !
Walter