I’m trying to develop a dapp of storing image files with Parity and IPFS. And at first I just want to develop it in the website. Just like a platform or a cloud disk. But today I communicated with others I found there are some problems. If I just make it like a platform, it means it need to maintain the blockchain for all users. It's still conformed to the thought of "decentration"? And if so, I need to set some nodes to keep the blockchain running. But how many nodes should I set?One more user, one more node? That seems unpractical...
I think there are some wrong thoughts about blockchain in my mind... Please give me some advice about developing dapps in the website. Thanks a lot!! :)