Data distribution in bitcoin blockchain

Computers which  we use everyday 

Peer to peer is one way of distributing data in a network. Another way is client-server. You may have heard of peer-to-peer file sharing on the BitTorrent network where files are shared between users, without a central server controlling the data. This is why BitTorrent has remained resilient as a network.

Client-server In the office environment, often data is held on servers, and wherever you log in, you can access the data. The server holds 100% of the data, and the clients trust that the data is definitive. Most of the internet is client-server where the website is held on the server, and you are the client when you access it. This is very efficient, and a traditional model in computing.

Peer-to-peer In peer-to-peer models, it’s more like a gossip network where each peer has 100% of the data (or as close to it as possible), and updates are shared around. Peer-to-peer is in some ways less efficient than client-server, as data is replicated many times; once per machine, and each change or addition to the data creates a lot of noisy gossip. However each peer is more independent, and can continue operating to some extent if it loses connectivity to the rest of the network. Also peer-to-peer networks are more robust, as there is no central server that can be controlled, so closing down peer-to-peer networks is harder.

The problems with peer-to-peer , even if all peers are ‘trusted’, there can be a problem of agreement or consensus – if each peer is updating at different speeds and have slightly different states, how do you determine the “real” or “true” state of the data?

Worse, in an ‘untrusted’ peer-to-peer network where you can’t necessarily trust any of the peers, how do you ensure that the system can’t easily be corrupted by bad peers?

 

Saransh Sharma

Saransh Sharma

Thanks for dropping by, i am currently working on multiple research on Mathematics and Computer Science, and writing codes for Open Source Meanwhile in the process of writing a book about Blockchain and AI.